Diary of test results

1 Monday, 2020-11-02

1.1 Functional tests

As a functional test, receiver temperatures were measured at room temperature. Except for the very first tests, receiver temperatures were measured in parallel for both receivers, so the test software framework appears to work as expected. An extensive log of all operations is saved to a postgresql database on the laptop in the clean room.

Table 1: 600 GHz settings tested
time stamp	GHz	dBm	MPA	FRM	bias300
2020-11-02 12:44:43.77566	24.551250	13.5	2	2	-4.4
2020-11-02 12:48:27.022172	24.551250	13.5	2	2	-4.4
2020-11-02 17:43:51.554235	24.551250	13.5	2	2	-4.4
2020-11-02 17:45:56.900139	24.551250	13.5	2	2	-4.4
2020-11-02 17:49:37.122275	24.551250	13.5	1	4	-4.4
2020-11-02 17:51:00.000867	24.551250	13.5	2	2	-4.2
2020-11-02 17:52:08.954908	24.551250	13.5	2	2	-4.0
2020-11-02 17:53:25.91882	24.551250	13.5	2	2	-3.8
2020-11-02 17:55:31.082402	24.551250	13.5	2	2	-3.8

Table 2: 1200 GHz settings tested
time stamp	GHz	dBm	MPA_A	MPA_B	FRM_A	FRM_B	bias300	bias600
2020-11-02 14:01:43.446457	24.573750	18.09	4	4	4	3	-3.4	-1.4
2020-11-02 14:14:14.857669	25.605000	18.15	4	4	4	4	-3.8	-1.2
2020-11-02 14:19:00.590585	25.605000	18.15	4	4	4	4	-3.8	-1.2
2020-11-02 17:44:01.242859	25.605000	18.15	4	4	4	4	-3.8	-1.2
2020-11-02 17:46:06.566736	25.605000	18.15	4	4	4	4	-3.8	-1.2
2020-11-02 17:49:47.035295	25.605000	18.15	4	4	4	4	-3.8	-1.2
2020-11-02 17:51:09.58676	25.605000	18.15	4	4	4	4	-3.8	-1.2
2020-11-02 17:52:18.548827	25.605000	18.15	4	4	4	4	-3.8	-1.2
2020-11-02 17:53:35.673336	25.605000	18.15	4	4	4	4	-3.8	-1.2

Table 3: results
time stamp	Rx	T_cold	T_hot	P_cold	P_hot	T_rec
2020-11-02 12:44:54.22712	600	220.8	301.9	-35.86319	-35.76441	-2966
2020-11-02 12:48:37.333653	600	219.4	301.9	-35.90117	-35.78662	2868
2020-11-02 17:44:16.655166	600	189.4	302.7	-38.07073	-37.93525	3386
2020-11-02 17:46:21.678683	600	189.1	302.7	-38.12535	-37.99023	3404
2020-11-02 17:50:02.354887	600	188.6	302.7	-40.71748	-40.70982	64409
2020-11-02 17:51:24.836127	600	188.6	302.7	-37.76348	-37.60256	2832
2020-11-02 17:52:34.471981	600	188.6	302.7	-37.4826	-37.28017	2201
2020-11-02 14:01:59.923917	1200	209.2	302.6	-39.21597	-39.07353	2590
2020-11-02 14:14:31.272861	1200	207.5	302.6	-39.12764	-39.08835	10254
2020-11-02 14:19:16.611922	1200	207.1	302.6	-38.62313	-38.55427	5763
2020-11-02 17:44:16.663026	1200	189.4	302.7	-35.10172	-34.9152	2392
2020-11-02 17:46:21.685204	1200	189.1	302.7	-35.54508	-35.05961	770
2020-11-02 17:50:02.361825	1200	188.6	302.7	-34.69222	-34.6282	7490
2020-11-02 17:51:24.842675	1200	188.6	302.7	-34.16779	-34.04167	3681
2020-11-02 17:52:34.478931	1200	188.6	302.7	-34.60155	-34.09196	727

1.2 Load scan

The MPI flip mirror was driven in small steps across the loads in order to define their positions. Note, that there was hardly any temperature contrast between shroud and MPI hot load. The cold load is clearly seen, however, and has a cleaner profile compared to EM2 results. Note, that the vacuum chamber temperature was unstable during these measurements, leading to power offsets between successive scans.

Fitting the four observed passages of the cold load using a second order Gaussian profile yields the following result. The fitted curves are shown as solid lines, the fitted center positions of the power dip caused by the cold load are shown as dashed lines. The broader grey line represents the position of the cold load, which was used during RU-EM2 testing.

 Min. 1st Qu.  Median    Mean 3rd Qu.    Max.
441.5   443.4   444.3   444.4   445.3   447.4

2 Tuesday, 2020-11-03

2.1 Functional tests

More receiver temperature measurements during cool down, all at the following settings

1200 GHz setting: 24.57375 GHz 19.5 dbm 4 4 4 3 0 -3.4 -1.4
600 GHz setting: 24.55125 GHz 13.5 dbm 2 2 -3.8

Table 4: Receiver temperatures on day 2 during cool down
time stamp	Rx	T_cold	T_hot	P_cold	P_hot	T_rec
2020-11-03 14:20:50.766651	600	117.4	302.6	-37.25017	-36.96028	2565
2020-11-03 14:22:53.235129	600	117.4	302.6	-37.25482	-36.95607	2483
2020-11-03 14:24:42.06932	600	117.2	302.7	-37.25861	-36.95664	2459
2020-11-03 14:20:50.773662	1200	117.4	302.6	-32.60474	-32.37411	3278
2020-11-03 14:22:53.242109	1200	117.4	302.6	-32.68586	-32.45507	3276
2020-11-03 14:24:42.079645	1200	117.2	302.7	-32.60033	-32.36536	3219

2.2 Load scan

Another load scan was performed, this time with sufficient contrast between the shroud and the hot load to also fit the position of the latter.

3 Wednesday, 2020-11-04

The optimization of selected frequencies for both the 600 and 1200 GHz receiver:

Table 5: Selected frequencies in first round of optimization
600 GHz		1200 GHz
22.404375	537.705	22.826250	1095.66
22.490625	539.775	22.940625	1101.15
23.070000	553.680	23.319375	1119.33
23.233125	557.595	23.559375	1130.85
23.456250	562.950	24.410625	1171.71
23.604375	566.505	25.188750	1209.06
23.662500	567.900	25.233750	1211.22
23.761875	570.285	25.706250	1233.90
24.234375	581.625	26.197500	1257.48
24.746250	593.910	26.270625	1260.99
26.096250	626.310	26.293125	1262.07

It turned out that a complete retuning at each setting including a reset of the FDM attenuator to 0 (maximum attenuation) followed by a ramp of of the FDM attenuator in five steps) took far too long time to be efficient. The algorithm was changed such that, when only the bias voltages of the 300 GHz doubler (both chains) and/or the 600 GHz doubler (1200 GHz chain) needed to be updated, the FDM attenuator setting was left untouched.

Results so far (will be updated as new results arrive):

Table 6: Performance 600 GHz (eleven frequencies)
band	sky	RF	MPA	FRM	bias300	min(T_rec)	stddev
600	537.71	22.404375	7	2	-2.8	1465	248
600	539.78	22.490625	6	3	-4.9	1407	205
600	553.68	23.070000	6	2	-3.8	1453	188
600	557.60	23.233125	6	2	-1.5	1394	197
600	562.95	23.456250	4	3	-3.6	1452	187
600	566.51	23.604375	2	2	-4	1487	181
600	567.90	23.662500	6	1	-4.4	1523	162
600	570.29	23.761875	3	6	-1.3	1524	210
600	581.63	24.234375	6	3	-3.9	1470	206
600	593.91	24.746250	4	0	-4.6	1520	170
600	626.31	26.096250	7	3	-4.3	2340	297

Note, that the optimization of the second frequency in the 600 GHz table was aborted and will have to be repeated.

Table 7: Performance 1200 GHz (eleven frequencies)
band	sky	RF	MPA_A	MPA_B	FRM_A	FRM_B	SHM	bias300	bias600	min(T_rec)	stddev
1200	1095.66	22.826250	4	4	4	3	4	-1.7	-1.6	3980	44
1200	1101.15	22.940625	4	4	3	3	4	-2.5	-0.8	2737	50
1200	1119.33	23.319375	4	4	4	4	4	-2	-0.8	5034	999
1200	1130.85	23.559375	4	4	3	3	4	-1.9	-1.39	1944	116
1200	1171.71	24.410625	4	4	3	3	4	-3.1	-0.6	1909	28
1200	1209.06	25.188750	4	4	3	3	2	-3.7	-2	1184	84
1200	1211.22	25.233750	4	4	4	3	4	-3.7	-2.1	1675	574
1200	1233.90	25.706250	4	4	4	3	3	-4	-1.8	1767	11
1200	1257.48	26.197500	4	4	3	4	2	-3.6	-1.7	2100	89
1200	1260.99	26.270625	4	4	5	4	4	-3.7	-2.14	2446	20
1200	1262.07	26.293125	4	4	3	4	4	-3.9	-2.1	2412	33

3.1 Notes

Unfortunately, the optimization routine was using the old positions of the MPI hot and cold load. Results will have to be recalculated once the MPI loads have been calibrated against the RU internal hot load.

We noticed, that the FDM at times has problems to lock, an observation shared by both Borys and Petro who worked with the FDM earlier. It appears that when setting the attenuator to 0 shortly after FDM switch on (the manual recommends to do this with 1 second of delay), it will typically be unable to lock. Removing this operation from the start-up procedure of the FDM proved much more reliable. This needs to be followed-up and understood.

4 Thursday, 2020-11-05

Continuation of receiver optimization. Table will be updated below, as results are coming in on following days. Thanks to Stephan, a column for the observed power towards the hot (P_hot) load has been added.

5 Friday, 2020-11-06

Continuation of receiver optimization.

6 Saturday, 2020-11-07

Continuation of receiver optimization.

7 Sunday, 2020-11-08

Continuation of receiver optimization.

8 Monday, 2020-11-09

Continuation of receiver optimization.

9 Tuesday, 2020-11-10

Final table for 600 GHz receiver

Table 8: Performance 600 GHz (all frequencies)
band	sky	RF	dbm	MPA	FRM	bias300	P_hot	min(T_rec)
600	536.18	22.340625	14.00	6	4	-1.80	-39.0	57156.40
600	536.22	22.342500	14.00	3	7	-1.80	-39.0	65373.60
600	536.27	22.344375	14.00	4	5	-2.10	-39.0	57423.70
600	536.31	22.346250	14.00	2	6	-1.50	-39.0	46913.10
600	536.36	22.348125	14.00	2	7	-1.30	-39.0	56526.80
600	536.98	22.374375	14.00	7	2	-1.00	-38.0	7779.36
600	537.71	22.404375	14.00	7	2	-2.80	-36.0	1353.64
600	538.74	22.447500	14.00	6	2	-3.50	-35.6	1364.12
600	539.78	22.490625	14.00	6	6	-4.90	-35.6	1324.97
600	540.54	22.522500	14.00	6	2	-3.30	-35.7	1330.41
600	541.08	22.545000	14.00	5	2	-2.40	-35.7	1327.66
600	541.66	22.569375	14.00	4	2	-1.40	-35.7	1330.06
600	542.25	22.593750	14.00	4	2	-1.20	-35.6	1322.42
600	542.84	22.618125	14.00	4	3	-1.10	-35.8	1317.38
600	543.78	22.657500	14.00	6	2	-1.40	-35.6	1286.31
600	544.68	22.695000	14.00	7	2	-1.70	-35.8	1278.45
600	545.40	22.725000	14.00	7	7	-1.80	-36.5	1737.18
600	545.45	22.726875	14.00	7	3	-1.80	-36.5	1827.34
600	545.49	22.728750	14.00	7	3	-1.90	-36.6	1900.33
600	545.54	22.730625	14.00	7	3	-1.90	-36.7	1960.58
600	545.58	22.732500	14.00	7	3	-1.90	-36.7	2004.44
600	546.16	22.756875	14.00	7	3	-2.50	-38.6	20163.40
600	546.88	22.786875	14.00	5	6	-1.20	-39.1	55814.70
600	547.43	22.809375	14.00	4	6	-3.70	-39.1	39141.40
600	548.10	22.837500	14.00	6	7	-1.90	-39.0	46510.50
600	548.73	22.863750	14.00	7	3	-1.00	-38.3	11891.70
600	549.31	22.888125	14.00	7	6	-1.10	-35.7	1341.53
600	549.90	22.912500	14.00	6	3	-1.80	-35.7	1369.98
600	550.44	22.935000	14.00	7	2	-3.30	-35.6	1383.95
600	550.98	22.957500	14.00	5	3	-2.40	-35.6	1370.85
600	551.79	22.991250	14.00	7	0	-1.40	-35.7	1396.75
600	552.55	23.023125	14.00	6	6	-4.80	-35.6	1357.60
600	553.14	23.047500	14.00	5	2	-3.80	-35.7	1387.91
600	553.59	23.066250	14.00	6	2	-4.60	-35.7	1369.79
600	553.63	23.068125	14.00	6	2	-2.20	-35.6	1371.94
600	553.68	23.070000	14.00	6	2	-3.70	-35.5	1367.17
600	553.72	23.071875	14.00	6	3	-3.20	-35.6	1371.42
600	553.77	23.073750	14.00	6	3	-3.40	-35.7	1373.97
600	554.27	23.094375	14.00	7	2	-2.00	-35.7	1376.36
600	554.85	23.118750	14.00	7	2	-1.40	-35.6	1372.81
600	555.39	23.141250	14.00	7	2	-1.50	-35.7	1371.92
600	555.88	23.161875	14.00	6	2	-1.20	-35.6	1376.31
600	556.43	23.184375	14.00	5	3	-1.00	-35.9	1432.24
600	556.92	23.205000	14.00	5	6	-1.20	-35.6	1344.84
600	557.32	23.221875	14.00	5	3	-1.50	-35.6	1338.16
600	557.51	23.229375	14.00	5	2	-1.10	-35.6	1339.61
600	557.55	23.231250	14.00	5	2	-1.10	-35.6	1346.15
600	557.60	23.233125	14.00	7	3	-3.40	-35.5	1333.66
600	557.64	23.235000	14.00	5	6	-1.20	-35.6	1332.51
600	557.69	23.236875	14.00	7	6	-3.50	-35.6	1330.53
600	557.87	23.244375	14.00	7	2	-3.60	-35.6	1340.79
600	558.45	23.268750	14.00	6	3	-1.20	-35.6	1348.85
600	559.35	23.306250	14.00	6	3	-4.60	-35.6	1324.48
600	560.07	23.336250	14.00	5	2	-2.50	-35.6	1368.99
600	560.74	23.364375	14.00	6	2	-4.00	-35.6	1362.36
600	561.42	23.392500	14.00	7	2	-4.40	-35.6	1363.51
600	561.96	23.415000	14.00	3	3	-1.10	-35.6	1376.02
600	562.01	23.416875	14.00	3	2	-1.20	-35.5	1379.40
600	562.05	23.418750	14.00	3	3	-1.30	-35.6	1366.24
600	562.10	23.420625	14.00	6	2	-4.60	-35.5	1360.12
600	562.14	23.422500	14.00	6	3	-4.60	-35.4	1365.91
600	562.68	23.445000	14.00	5	0	-2.10	-35.6	1379.41
600	562.86	23.452500	14.00	2	3	-1.10	-35.6	1379.72
600	562.90	23.454375	14.00	2	6	-1.10	-35.5	1376.49
600	562.95	23.456250	14.00	7	0	-3.90	-35.6	1365.32
600	562.99	23.458125	14.00	7	0	-3.90	-35.6	1373.31
600	563.04	23.460000	14.00	4	3	-3.60	-35.6	1376.89
600	563.22	23.467500	14.00	2	2	-1.40	-35.5	1380.89
600	563.54	23.480625	14.00	4	3	-3.50	-35.6	1386.24
600	564.12	23.505000	14.00	5	4	-3.30	-35.6	1383.35
600	565.11	23.546250	14.00	2	0	-1.80	-35.6	1342.41
600	565.83	23.576250	14.00	2	5	-1.40	-35.6	1394.84
600	566.23	23.593125	14.00	2	0	-2.20	-35.6	1407.17
600	566.41	23.600625	14.00	7	1	-4.90	-35.7	1408.42
600	566.46	23.602500	14.00	6	1	-5.00	-35.6	1402.92
600	566.51	23.604375	14.00	1	2	-3.40	-35.5	1404.52
600	566.55	23.606250	14.00	6	1	-5.00	-35.6	1377.23
600	566.60	23.608125	14.00	6	1	-5.00	-35.5	1391.86
600	566.78	23.615625	14.00	1	2	-3.70	-35.6	1421.48
600	567.22	23.634375	14.00	5	1	-1.60	-35.6	1436.19
600	567.63	23.651250	14.00	2	2	-4.20	-35.6	1429.87
600	567.81	23.658750	14.00	4	2	-2.20	-35.6	1431.68
600	567.86	23.660625	14.00	4	2	-2.50	-35.6	1434.63
600	567.90	23.662500	14.00	4	2	-2.90	-35.5	1433.84
600	567.95	23.664375	14.00	4	2	-4.00	-35.6	1429.32
600	567.99	23.666250	14.00	5	2	-2.80	-35.6	1431.08
600	568.17	23.673750	14.00	4	1	-3.50	-35.4	1423.71
600	568.76	23.698125	14.00	6	3	-1.10	-35.5	1407.11
600	569.52	23.730000	14.00	4	6	-1.30	-35.7	1464.79
600	569.56	23.731875	14.00	4	3	-1.30	-35.6	1418.34
600	569.61	23.733750	14.00	4	2	-1.30	-35.5	1459.24
600	569.65	23.735625	14.00	4	2	-1.40	-35.7	1435.37
600	569.70	23.737500	14.00	4	2	-1.40	-35.5	1424.05
600	570.02	23.750625	14.00	3	6	-1.00	-35.5	1416.67
600	570.20	23.758125	14.00	3	6	-1.20	-35.6	1426.91
600	570.24	23.760000	14.00	3	2	-1.20	-35.5	1417.39
600	570.29	23.761875	14.00	3	2	-1.30	-35.6	1429.97
600	570.33	23.763750	14.00	3	2	-1.30	-35.6	1410.84
600	570.38	23.765625	14.00	3	6	-1.30	-35.5	1423.06
600	570.55	23.773125	14.00	7	2	-3.10	-35.6	1424.18
600	571.28	23.803125	14.00	3	2	-1.10	-35.5	1447.09
600	572.22	23.842500	14.00	4	3	-1.30	-35.5	1421.13
600	573.21	23.883750	14.00	5	2	-3.90	-35.5	1389.29
600	574.06	23.919375	14.00	5	2	-4.60	-35.6	1385.63
600	575.87	23.994375	14.00	7	6	-1.20	-35.5	1385.49
600	576.77	24.031875	14.00	7	3	-1.50	-35.5	1390.91
600	577.21	24.050625	14.00	7	2	-1.60	-35.4	1383.84
600	578.52	24.105000	14.00	6	3	-1.30	-35.5	1399.47
600	579.33	24.138750	14.00	6	2	-1.50	-35.5	1382.86
600	580.14	24.172500	14.00	6	2	-2.00	-35.5	1370.13
600	581.36	24.223125	14.00	6	2	-3.20	-35.4	1365.12
600	581.54	24.230625	14.00	6	2	-3.60	-35.5	1370.15
600	581.58	24.232500	14.00	6	2	-3.80	-35.5	1377.89
600	581.63	24.234375	14.00	6	3	-3.90	-35.5	1378.04
600	581.67	24.236250	14.00	7	3	-2.60	-35.4	1374.51
600	581.71	24.238125	14.00	7	2	-2.50	-35.5	1375.38
600	581.89	24.245625	14.00	7	2	-3.10	-35.4	1381.41
600	582.03	24.251250	14.00	7	3	-4.10	-35.4	1378.00
600	582.26	24.260625	14.00	7	2	-4.90	-35.7	1443.42
600	583.74	24.322500	14.00	6	2	-1.00	-35.1	1590.20
600	584.23	24.343125	14.00	7	2	-3.60	-35.4	1371.40
600	585.18	24.382500	14.00	7	0	-1.20	-35.5	1394.24
600	585.81	24.408750	14.00	4	2	-3.20	-35.4	1387.98
600	586.66	24.444375	14.00	7	2	-4.10	-35.4	1365.74
600	587.70	24.487500	14.00	5	1	-2.20	-35.4	1410.43
600	588.78	24.532500	14.00	4	0	-5.00	-35.3	1403.29
600	589.23	24.551250	14.00	4	1	-2.00	-35.4	1419.14
600	593.01	24.708750	14.00	5	1	-4.70	-35.5	1431.18
600	593.60	24.733125	14.00	2	0	-2.80	-35.4	1434.14
600	593.64	24.735000	14.00	3	3	-4.50	-35.4	1434.87
600	593.82	24.742500	14.00	3	3	-4.40	-35.3	1428.07
600	593.87	24.744375	14.00	2	3	-4.30	-35.4	1439.48
600	593.91	24.746250	14.00	1	0	-2.40	-35.4	1424.83
600	593.96	24.748125	14.00	0	2	-3.00	-35.4	1438.81
600	594.00	24.750000	14.00	0	2	-3.10	-35.4	1427.89
600	594.18	24.757500	14.00	4	0	-4.80	-35.5	1437.35
600	594.90	24.787500	14.00	2	2	-5.00	-35.4	1416.05
600	595.76	24.823125	14.00	2	1	-5.00	-35.5	1451.92
600	596.29	24.845625	14.00	2	5	-4.50	-35.4	1457.99
600	597.82	24.909375	14.00	5	0	-4.90	-35.4	1477.49
600	598.28	24.928125	14.00	6	4	-4.20	-35.3	1468.05
600	598.81	24.950625	14.00	4	1	-1.20	-35.4	1477.35
600	601.24	25.051875	14.00	4	2	-1.60	-35.3	1517.68
600	601.79	25.074375	14.00	6	2	-4.10	-35.3	1514.66
600	603.54	25.147500	14.00	6	2	-4.70	-35.3	1565.88
600	605.29	25.220625	14.00	6	3	-1.60	-35.3	1594.97
600	605.93	25.246875	14.00	6	2	-1.90	-35.3	1596.64
600	606.33	25.263750	14.00	6	2	-2.10	-35.3	1602.63
600	606.91	25.288125	14.00	6	2	-2.50	-35.3	1611.60
600	608.27	25.344375	14.00	6	2	-4.90	-35.3	1635.83
600	609.30	25.387500	14.00	5	2	-5.00	-35.4	1650.47
600	610.29	25.428750	14.00	5	2	-5.00	-35.2	1668.64
600	611.28	25.470000	14.00	7	3	-4.80	-35.2	1660.61
600	612.27	25.511250	14.00	6	0	-1.10	-35.2	1715.62
600	613.21	25.550625	14.00	3	2	-2.80	-35.4	1727.96
600	613.80	25.575000	14.00	4	1	-1.30	-35.2	1742.93
600	614.29	25.595625	14.00	3	2	-4.90	-35.2	1712.97
600	615.46	25.644375	14.00	4	0	-5.00	-35.2	1781.49
600	616.59	25.691250	14.00	3	1	-5.00	-35.3	1787.57
600	617.45	25.726875	14.00	2	0	-3.60	-35.1	1841.52
600	618.21	25.758750	14.00	0	2	-3.20	-35.3	1861.08
600	618.97	25.790625	14.00	0	2	-3.40	-35.2	1889.24
600	619.92	25.830000	14.00	1	2	-5.00	-35.0	1864.72
600	620.51	25.854375	14.00	1	3	-4.80	-35.1	1963.24
600	620.73	25.863750	14.00	1	2	-5.00	-35.0	1943.54
600	622.39	25.933125	14.00	1	5	-2.00	-35.1	2043.40
600	623.29	25.970625	14.00	3	3	-4.90	-35.1	2050.60
600	624.82	26.034375	14.00	4	0	-4.00	-35.2	2150.19
600	626.04	26.085000	14.00	7	3	-4.80	-35.2	2136.87
600	626.22	26.092500	14.00	7	3	-4.40	-35.0	2190.02
600	626.27	26.094375	14.00	6	2	-3.80	-35.1	2214.81
600	626.31	26.096250	14.00	7	2	-4.40	-35.1	2207.57
600	626.36	26.098125	14.00	5	2	-3.10	-35.1	2217.98
600	626.40	26.100000	14.00	5	2	-3.10	-35.1	2226.04
600	626.58	26.107500	14.00	5	3	-3.00	-35.1	2248.69
600	627.39	26.141250	14.00	6	1	-2.80	-35.2	2314.07
600	628.52	26.188125	14.00	7	5	-1.50	-35.1	2374.12
600	630.22	26.259375	14.00	7	3	-2.40	-35.1	2487.22
600	630.99	26.291250	14.00	7	3	-3.40	-35.1	2522.16
600	631.94	26.330625	14.00	7	6	-1.00	-36.4	3174.77

(180 rows)

Figure 4: Final performance of 600 GHz receiver. Frequencies where the noise temperature exceeded 10000 K are marked with red triangles.

10 Wednesday, 2020-11-11

Optimization of 1200 GHz receiver continues.

11 Thursday, 2020-11-12

11.1 Hot load calibration

The MPI cold load was calibrated by using the internal RU load as a calibrator.

Figure 5: Results of MPI cold load calibration. Red circles show temperatures recorded by the Keysight data logger. Blue circles show clod load temperatures determined by using the internal RU load as reference. The horizontal lines show their means, respectively.

11.2 Shadow bar measurement

A shadow bar measurment for checkeing beam alignment was performed at three frequencies in each band. Horizontal and vertical beam offsets were fitted to the observed power pattern. See the User Manual for Martin-Puplett Interferometer (JUI-IAP-SWI-MAN-002) for a description of the algorithm.

Table 9: Frequencies used for shadow bar measurements.
band	frequency 1	frequency 2	frequency 3
600	22.490625	24.234375	26.096250
1200	22.940625	24.410625	26.293125

Figure 6: Results from shadow bar measurements for the 600 GHz receiver. Frequencies increase from top to bottom. The two columns correspond to forward and backward scanning of the shadow bar mechanism, respectively.

Figure 7: Same as Fig.6, but for the 1200 GHz receiver.

12 Friday, 2020-11-13

12.1 Stability

Data not analyzed, yet.

13 Saturday, 2020-11-14

Optimization of 1200 GHz receiver continues.

14 Sunday, 2020-11-15

Optimization of 1200 GHz receiver continues.

Table 10: Performance 1200 GHz (all frequencies)
band	sky	RF	dbm	MPA_A	MPA_B	FRM_A	FRM_B	SHM	bias300	bias600	P_hot	min(T_rec)	stddev
1200	1072.08	22.335000	20.48	4	4	5	4	4	-1.7	-1.2	-34.3	13361	2817
1200	1072.98	22.353750	20.47	4	4	5	3	4	-1.5	-1.2	-31.9	5600	113
1200	1080.18	22.503750	20.48	4	4	5	4	3	-1.7	-1.2	-31.3	2992	22
1200	1081.98	22.541250	20.48	4	4	5	4	3	-1.7	-1.2	-31.5	3413	23
1200	1083.78	22.578750	20.48	4	4	5	4	4	-1.7	-1.2	-31.7	3555	33
1200	1084.68	22.597500	20.48	4	4	5	3	4	-1.8	-1.2	-32.0	3496	47
1200	1085.58	22.616250	20.48	4	4	4	4	4	-1.7	-1.2	-32.2	3424	34
1200	1086.48	22.635000	20.47	4	4	3	3	4	-1.8	-1	-32.5	3352	14
1200	1087.38	22.653750	20.48	4	4	5	4	4	-1.8	-1.2	-32.4	3220	40
1200	1088.19	22.670625	20.48	4	4	4	4	4	-2	-1.1	-32.8	3570	38
1200	1089.63	22.700625	20.48	4	4	4	4	4	-1.9	-1.3	-32.8	3289	77
1200	1090.44	22.717500	20.48	4	4	5	4	4	-1.9	-1.3	-32.8	3230	24
1200	1091.34	22.736250	20.49	4	4	5	4	4	-2.1	-1.5	-32.7	3234	12
1200	1092.24	22.755000	20.49	4	4	3	4	4	-1.8	-1.6	-32.4	3065	11
1200	1093.32	22.777500	20.49	4	4	5	3	4	-1.9	-1.7	-32.1	3192	20
1200	1094.04	22.792500	20.49	4	4	5	3	4	-1.8	-1.7	-31.8	3054	29
1200	1094.85	22.809375	20.5	4	4	4	3	4	-2	-1.6	-31.5	3048	27
1200	1095.66	22.826250	20.5	4	4	4	3	4	-1.5	-1.4	-31.7	2987	11
1200	1096.29	22.839375	20.5	4	4	3	4	4	-2	-1.3	-31.4	2872	24
1200	1096.29	22.839375	20.5	4	4	3	4	4	-1.9	-1.2	-31.4	2872	25
1200	1096.29	22.839375	20.5	4	4	4	3	4	-1.8	-1.3	-31.4	2872	13
1200	1096.83	22.850625	20.5	4	4	4	4	4	-1.6	-0.8	-31.8	2729	10
1200	1097.73	22.869375	20.5	4	4	4	3	4	-1.9	-0.8	-31.5	2633	5
1200	1098.54	22.886250	20.5	4	4	5	3	4	-1.7	-1.1	-31.4	2559	53
1200	1099.44	22.905000	20.5	4	4	4	3	4	-1.9	-0.8	-31.3	2507	12
1200	1100.34	22.923750	20.51	4	4	4	4	1	-2.1	-0.8	-31.5	2490	14
1200	1101.15	22.940625	20.51	4	4	3	3	2	-2.4	-0.7	-31.5	2433	83
1200	1101.60	22.950000	20.51	4	4	4	4	1	-2.7	-0.8	-31.6	2341	112
1200	1102.50	22.968750	20.51	4	4	4	4	4	-2.3	-1.1	-31.1	2422	20
1200	1103.40	22.987500	20.51	4	4	5	3	3	-2.2	-0.8	-31.3	2554	20
1200	1104.30	23.006250	20.52	4	4	5	3	2	-2	-1	-31.3	2811	20
1200	1105.02	23.021250	20.52	4	4	3	4	4	-1.8	-0.7	-31.4	2771	27
1200	1105.92	23.040000	20.52	4	4	5	4	2	-2.1	-1	-31.3	2784	17
1200	1106.82	23.058750	20.52	4	4	3	3	3	-2.2	-1	-31.2	2904	14
1200	1107.45	23.071875	20.52	4	4	4	3	4	-2.1	-1	-31.5	2805	20
1200	1108.26	23.088750	20.53	4	4	4	3	4	-2	-0.6	-31.6	2838	14
1200	1108.80	23.100000	20.53	4	4	4	4	3	-2.3	-0.8	-31.6	2869	14
1200	1109.34	23.111250	20.53	4	4	3	4	4	-2.3	-0.7	-31.8	2851	23
1200	1110.06	23.126250	20.53	4	4	4	4	4	-2.6	-0.7	-31.9	2885	38
1200	1110.78	23.141250	20.53	4	4	5	4	4	-2.5	-0.8	-32.0	2950	22
1200	1111.32	23.152500	20.53	4	4	4	4	4	-2.5	-1.2	-31.9	2919	12
1200	1111.32	23.152500	20.53	4	4	5	4	4	-2.5	-1.1	-31.9	2919	18
1200	1111.86	23.163750	20.53	4	4	4	4	4	-2.7	-1.3	-32.2	3048	15
1200	1112.40	23.175000	20.53	4	4	3	4	4	-2.5	-1.3	-32.2	3003	30
1200	1113.12	23.190000	20.54	4	4	4	4	4	-2.4	-1	-32.4	3089	23
1200	1113.93	23.206875	20.54	4	4	4	4	4	-2.6	-1.3	-32.6	3238	23
1200	1114.74	23.223750	20.54	4	4	3	3	1	-2.7	-1.5	-33.7	5295	72
1200	1115.73	23.244375	20.54	4	4	5	3	4	-2.6	-1.4	-32.4	3121	34
1200	1116.90	23.268750	20.55	4	4	5	4	4	-2.3	-0.8	-32.3	3058	23
1200	1117.80	23.287500	20.55	4	4	5	4	4	-2.4	-1	-32.1	2949	39
1200	1118.88	23.310000	20.55	4	4	5	4	4	-2.1	-1	-32.2	3001	16
1200	1119.33	23.319375	20.55	4	4	4	4	4	-2.1	-0.7	-32.1	2955	20
1200	1120.23	23.338125	20.55	4	4	5	4	4	-1.9	-1.1	-31.8	2855	26
1200	1121.22	23.358750	20.56	4	4	4	4	4	-2.1	-0.7	-31.8	2789	21
1200	1122.12	23.377500	20.56	4	4	5	3	4	-1.9	-1	-31.8	2764	21
1200	1122.84	23.392500	20.56	4	4	4	3	4	-2	-0.7	-31.7	2731	19
1200	1123.83	23.413125	20.56	4	4	3	4	4	-1.9	-0.8	-31.6	2772	29
1200	1124.73	23.431875	20.56	4	4	5	4	2	-2.3	-0.8	-31.4	2769	13
1200	1125.63	23.450625	20.57	4	4	5	4	4	-2.4	-0.9	-31.2	2593	12
1200	1126.17	23.461875	20.57	4	4	5	3	3	-2.1	-0.8	-31.2	2719	26
1200	1126.89	23.476875	20.57	4	4	5	4	3	-2.6	-1.2	-31.4	2534	9
1200	1127.70	23.493750	20.57	4	4	5	4	2	-2.2	-1.1	-31.3	1926	56
1200	1128.78	23.516250	20.57	4	4	3	4	4	-2.2	-1.2	-31.3	2566	60
1200	1129.68	23.535000	20.57	4	4	4	4	4	-2.3	-1.1	-31.2	2619	31
1200	1130.85	23.559375	20.58	4	4	3	3	1	-1.6	-1.19	-31.7	2764	13
1200	1132.11	23.585625	20.58	4	4	4	3	3	-1.8	-1.1	-31.6	2620	229
1200	1133.01	23.604375	20.59	4	4	3	3	4	-2.3	-1.3	-31.5	2790	26
1200	1133.64	23.617500	20.59	4	4	3	3	4	-1.7	-1.1	-31.8	2708	130
1200	1134.54	23.636250	20.59	4	4	4	3	4	-2.2	-1.5	-31.6	2846	7
1200	1135.89	23.664375	20.59	4	4	4	4	4	-2.3	-1.48	-31.9	2878	18
1200	1137.69	23.701875	20.6	4	4	4	4	4	-2.5	-1.4	-31.9	2845	9
1200	1139.04	23.730000	20.6	4	4	5	4	4	-2.5	-1.22	-32.2	2928	24
1200	1140.57	23.761875	20.6	4	4	4	3	4	-2.4	-1.22	-32.3	2965	52
1200	1142.01	23.791875	20.61	4	4	4	3	4	-2.6	-1	-32.1	2842	8
1200	1143.00	23.812500	20.61	4	4	4	4	4	-2.3	-0.7	-32.0	2771	12
1200	1144.44	23.842500	20.61	4	4	5	4	4	-2.5	-0.6	-31.7	2737	23
1200	1145.70	23.868750	20.61	4	4	4	3	3	-2.3	-0.8	-31.8	2697	21
1200	1147.14	23.898750	20.62	4	4	5	4	2	-2.5	-0.3	-31.7	2579	40
1200	1147.86	23.913750	20.62	4	4	4	3	3	-2.8	-0.8	-31.6	2558	25
1200	1149.03	23.938125	20.63	4	4	3	4	2	-2.8	-0.7	-31.6	2714	20
1200	1150.20	23.962500	20.63	4	4	4	3	2	-2.5	-0.88	-31.5	2497	26
1200	1151.64	23.992500	20.63	4	4	3	3	4	-2.6	-0.87	-31.3	2687	76
1200	1152.36	24.007500	20.63	4	4	4	4	4	-2.7	-0.91	-31.0	2134	453
1200	1153.71	24.035625	20.63	4	4	3	4	3	-2.6	-1.3	-31.1	2280	26
1200	1154.97	24.061875	20.64	4	4	5	4	4	-2.9	-1	-30.8	1497	360
1200	1156.14	24.086250	20.64	4	4	3	4	3	-3	-1.5	-31.1	1986	71
1200	1156.95	24.103125	20.64	4	4	4	3	4	-2.5	-1.6	-30.9	1538	4
1200	1157.67	24.118125	20.64	4	4	4	3	1	-2.7	-1.87	-31.5	2661	12
1200	1159.11	24.148125	20.65	4	4	3	4	2	-2.5	-1.8	-31.6	2726	20
1200	1160.01	24.166875	20.65	4	4	4	4	4	-2.6	-2.3	-31.5	2754	13
1200	1160.82	24.183750	20.65	4	4	4	4	3	-2.9	-1.9	-31.6	2708	18
1200	1161.54	24.198750	20.65	4	4	3	4	4	-2.7	-2.5	-31.7	2779	9
1200	1162.35	24.215625	20.65	4	4	3	4	4	-2.5	-2.6	-31.9	2614	13
1200	1163.70	24.243750	20.66	4	4	5	3	4	-2.7	-1.8	-31.8	2710	23
1200	1164.33	24.256875	20.66	4	4	5	3	3	-2.4	-2.2	-32.0	2714	36
1200	1165.68	24.285000	20.66	4	4	5	4	4	-2.5	-1.7	-32.0	2642	21
1200	1166.58	24.303750	20.66	4	4	5	4	4	-2.7	-1.6	-32.0	2686	9
1200	1167.57	24.324375	20.67	4	4	5	4	4	-3	-1.5	-32.0	2656	14
1200	1168.11	24.335625	20.67	4	4	3	3	1	-2.8	-1.3	-32.5	3057	51
1200	1168.92	24.352500	20.67	4	4	3	3	3	-2.8	-1.1	-31.9	2519	35
1200	1169.82	24.371250	20.67	4	4	4	3	4	-3.2	-1.2	-31.7	2633	21
1200	1170.81	24.391875	20.67	4	4	3	4	4	-3	-0.7	-31.7	2597	86
1200	1171.71	24.410625	20.68	4	4	5	3	3	-3	-0.6	-31.7	2585	18
1200	1172.88	24.435000	20.68	4	4	3	4	4	-3	-0.7	-31.4	2355	36
1200	1173.60	24.450000	20.68	4	4	3	3	4	-2.8	-1.1	-31.2	2609	15
1200	1174.41	24.466875	20.68	4	4	3	4	2	-3.1	-0.6	-31.5	2599	34
1200	1175.76	24.495000	20.68	4	4	4	3	2	-3.1	-1.1	-31.1	2496	8
1200	1177.11	24.523125	20.69	4	4	4	3	0	-3.4	-1	-31.4	2592	13
1200	1179.00	24.562500	20.69	4	4	4	3	4	-3.4	-1.5	-30.6	1198	120
1200	1180.89	24.601875	20.7	4	4	3	3	0	-3.6	-1.7	-31.1	2602	7
1200	1182.24	24.630000	20.71	4	4	3	3	0	-3.3	-1.7	-31.1	2622	8
1200	1183.77	24.661875	20.71	4	4	3	3	0	-3.9	-2	-31.3	2534	45
1200	1184.94	24.686250	20.71	4	4	4	4	3	-3.7	-2.1	-30.9	2381	16
1200	1186.20	24.712500	20.71	4	4	5	3	0	-3.2	-2.1	-31.4	2560	33
1200	1187.55	24.740625	20.71	4	4	3	4	2	-3.5	-2.9	-31.4	2629	12
1200	1188.90	24.768750	20.72	4	4	5	3	3	-3.1	-3.2	-31.6	2579	17
1200	1189.98	24.791250	20.72	4	4	3	3	3	-3	-2.9	-31.6	2595	28
1200	1190.97	24.811875	20.72	4	4	5	3	4	-3.1	-2.9	-31.6	2499	12
1200	1192.32	24.840000	20.73	4	4	3	4	3	-3.1	-2.8	-31.6	2518	21
1200	1193.04	24.855000	20.73	4	4	3	3	4	-3.5	-2.6	-31.6	2428	13
1200	1193.94	24.873750	20.73	4	4	5	3	4	-3.6	-2.4	-31.7	2443	67
1200	1193.94	24.873750	20.73	4	4	5	4	4	-3.2	-2.2	-31.6	2443	28
1200	1195.29	24.901875	20.73	4	4	5	3	4	-3.4	-1.5	-31.5	2543	4
1200	1197.90	24.956250	20.74	4	4	3	4	4	-3.6	-0.8	-31.3	2552	17
1200	1199.25	24.984375	20.74	4	4	4	4	1	-3.2	-0.9	-31.4	2579	17
1200	1200.69	25.014375	20.75	4	4	3	4	1	-3.3	-1	-31.3	2460	10
1200	1201.68	25.035000	20.75	4	4	4	4	1	-3.2	-0.8	-31.2	2448	15
1200	1202.40	25.050000	20.75	4	4	3	3	0	-3.7	-1.1	-31.4	2558	10
1200	1203.21	25.066875	20.75	4	4	5	3	0	-3.6	-0.9	-31.4	2365	28
1200	1204.11	25.085625	20.75	4	4	3	3	0	-3.7	-0.9	-31.4	2510	11
1200	1205.10	25.106250	20.76	4	4	3	3	0	-3.9	-1	-31.3	2310	29
1200	1205.91	25.123125	20.76	4	4	5	4	4	-3.6	-1.2	-30.5	1539	293
1200	1207.71	25.160625	20.77	4	4	5	3	3	-3.9	-1.9	-30.6	2278	10
1200	1209.87	25.205625	20.77	4	4	3	3	2	-4	-2.3	-30.7	2397	142
1200	1212.75	25.265625	20.77	4	4	5	3	0	-3.9	-2.6	-30.6	2894	150
1200	1213.65	25.284375	20.78	4	4	3	3	0	-3.2	-2.6	-30.7	3116	26
1200	1215.72	25.327500	20.78	4	4	3	3	0	-3.4	-3.6	-31.6	2859	49
1200	1216.26	25.338750	20.78	4	4	4	3	0	-3.1	-3.6	-31.2	3168	19
1200	1217.07	25.355625	20.78	4	4	3	3	0	-3.1	-3.7	-31.1	3251	27
1200	1218.87	25.393125	20.78	4	4	3	3	0	-3.5	-3.2	-31.5	2785	19
1200	1221.03	25.438125	20.79	4	4	4	3	2	-3.6	-2.4	-31.8	2433	14
1200	1222.92	25.477500	20.8	4	4	5	3	1	-3.6	-1.4	-31.6	2547	17
1200	1224.00	25.500000	20.8	4	4	3	3	2	-4.1	-1.2	-31.4	2616	19
1200	1225.08	25.522500	20.8	4	4	3	3	1	-3.8	-1.1	-31.1	2313	16
1200	1226.34	25.548750	20.81	4	4	3	3	1	-4.2	-0.9	-31.6	2466	20
1200	1228.05	25.584375	20.81	4	4	3	3	1	-3.9	-1.1	-31.6	2458	13
1200	1229.04	25.605000	20.81	4	4	3	4	0	-3.6	-1	-31.5	2484	8
1200	1230.84	25.642500	20.81	4	4	4	3	0	-3.6	-1.2	-31.4	2479	10
1200	1234.80	25.725000	20.83	4	4	3	3	0	-3.6	-2.2	-31.5	2440	14
1200	1236.15	25.753125	20.83	4	4	3	3	0	-3.8	-2.1	-31.2	2484	14
1200	1237.95	25.790625	20.83	4	4	3	3	0	-3.9	-2.5	-31.4	2452	13
1200	1238.31	25.798125	20.83	4	4	3	4	0	-3.7	-2.6	-31.4	2453	16
1200	1240.11	25.835625	20.84	4	4	3	3	0	-3.7	-2.7	-30.9	2809	24
1200	1241.01	25.854375	20.84	4	4	5	3	0	-3.7	-3.2	-31.3	2722	20
1200	1241.73	25.869375	20.84	4	4	3	3	0	-3.6	-3.3	-31.4	2736	18
1200	1243.53	25.906875	20.85	4	4	3	3	0	-3.1	-3.2	-30.7	3201	15
1200	1244.79	25.933125	20.85	4	4	3	3	0	-3.4	-2.5	-30.7	3209	13
1200	1247.58	25.991250	20.85	4	4	3	3	1	-3.5	-2.1	-31.6	2429	21
1200	1249.20	26.025000	20.86	4	4	3	4	1	-3.8	-2	-31.6	2387	18
1200	1250.10	26.043750	20.86	4	4	4	4	0	-3.8	-1.6	-31.5	2501	29
1200	1250.10	26.043750	20.86	4	4	4	4	0	-3.7	-1.6	-31.5	2501	14
1200	1250.10	26.043750	20.86	4	4	4	4	0	-3.6	-1.9	-31.5	2501	18
1200	1250.10	26.043750	20.86	4	4	5	3	0	-3.4	-2	-31.6	2501	11
1200	1251.00	26.062500	20.86	4	4	4	4	0	-3.9	-2	-31.5	2514	16
1200	1252.98	26.103750	20.87	4	4	3	3	1	-3.7	-1.4	-31.4	2593	11
1200	1254.78	26.141250	20.88	4	4	3	3	0	-3.6	-1.4	-31.3	2616	23
1200	1255.59	26.158125	20.88	4	4	3	4	0	-3.6	-1.5	-31.1	2677	12
1200	1256.49	26.176875	20.88	4	4	3	3	0	-3.5	-1.5	-31.2	2638	18
1200	1257.48	26.197500	20.88	4	4	3	4	4	-3.4	-1.7	-30.5	1235	17
1200	1259.28	26.235000	20.89	4	4	3	4	0	-3.9	-2	-31.2	2466	8
1200	1260.99	26.270625	20.89	4	4	4	4	4	-3.8	-2.34	-30.5	1161	93
1200	1262.07	26.293125	20.89	4	4	3	3	3	-3.8	-2.1	-30.9	1631	156
1200	1263.42	26.321250	20.89	4	4	3	3	0	-4	-2.3	-31.2	2474	41
1200	1273.05	26.521875	20.92	4	4	3	3	2	-3.5	-2.5	-30.1	1852	244
1200	1273.95	26.540625	20.92	4	4	4	4	4	-3.2	-2.4	-30.0	1775	62
1200	1276.92	26.602500	20.93	4	4	3	3	2	-3.7	-2.6	-30.1	2080	42
1200	1279.98	26.666250	20.93	4	4	4	3	0	-3.4	-1.5	-31.1	2675	25
1200	1279.98	26.666250	20.93	4	4	5	3	0	-3.5	-1.5	-31.0	2675	6

(178 rows)

Figure 8: Performance of the 1200 GHz receiver. Frequencies where the noise temperature exceeded 10000 K are marked with red triangles.

15 Wednesday, 2020-11-18

Standing wave measurements 600 + 1200 GHz

Results:

You will also need these two lists of frequencies:

16 Thursday, 2020-11-19

Start of spurious measurements for the 600 GHz receiver.

17 Friday, 2020-11-20

Continuation of spurious measurements for the 600 GHz receiver.

Results:

18 Saturday, 2020-11-21

Start of spectral response measurements for the 600 GHz receiver.

19 Sunday, 2020-11-22

Continuation of spectral response measurements for the 600 GHz receiver.

Results:

20 Monday, 2020-11-23

Finishing stability measurements. First set of spectra were taken during night between Nov 19 and 20, second set during night between Nov 22 and 23.

For both receivers, 5500 spectra were taken at each of eleven selected frequencies. Below, for each frequency we show plots with four panels:

panel: mean spectrum in blue, surrounded by min and max in red.
panel: drift of channels 256, 512 and 768 as functions of time. An offset was added to the blue and green curves to keep them apart from the red one.
From each spectrum the average spectrum was subtracted and the array of 5500 spectra times 1024 channels is shown as an image. The range of resulting intensities was cut to -2, +2.
Allan variance plots for both continuum (input values were the data from the blue curve of the 2nd panel) and spectroscopic stability (input values were the differences of the blue and red curve of the 2nd panel)

20.1 600: 22.404375 GHz

20.2 600: 22.490625 GHz

20.3 600: 23.070000 GHz

20.4 600: 23.233125 GHz

20.5 600: 23.456250 GHz

20.6 600: 23.604375 GHz

20.7 600: 23.662500 GHz

20.8 600: 23.761875 GHz

20.9 600: 24.234375 GHz

20.10 600: 24.746250 GHz

20.11 600: 26.096250 GHz

20.12 1200: 22.826250 GHz

20.13 1200: 22.940625 GHz

20.14 1200: 23.319375 GHz

20.15 1200: 23.559375 GHz

20.16 1200: 24.410625 GHz

20.17 1200: 25.188750 GHz

20.18 1200: 25.233750 GHz

20.19 1200: 25.706250 GHz

20.20 1200: 26.197500 GHz

20.21 1200: 26.270625 GHz

20.22 1200: 26.293125 GHz

21 Tuesday, 2021-01-26

The new 1200 GHz receiver was tested at 6 selected frequencies above 25.0 GHz using a very restricted tuning range and at three different FDM power levels (18.0, 17.5 and 17.0 dBm). The table shows best achieved noise temperatures at each of these levels.

Table 11: 1200 GHz performance
GHz	dBm	MPA_A	MPA_B	FRM_A	FRM_B	SHM	bias₃₀₀	bias₆₀₀	T_rec
25.18875	18.8	4	4	4	3	-1	-4.0	-2.30	2955.165
25.23375	18.8	4	4	3	3	-1	-3.5	-2.60	2962.751
25.70625	18.8	4	4	4	3	-1	-4.3	-1.20	2947.999
26.19750	18.8	4	4	3	2	-1	-4.0	-2.30	2987.708
26.27062	18.8	4	4	3	4	-1	-4.4	-2.34	2970.304
26.29312	18.8	4	4	4	3	-1	-3.3	-2.60	3026.254
25.18875	18.3	4	4	3	3	-1	-4.0	-2.30	3000.371
25.23375	18.3	4	4	3	2	-1	-3.3	-2.40	3018.376
25.70625	18.3	4	4	4	3	-1	-4.2	-2.00	3014.919
26.19750	18.3	4	4	5	4	-1	-4.1	-2.20	3042.155
26.27062	18.3	4	4	3	3	-1	-4.3	-2.34	3030.107
26.29312	18.3	4	4	4	4	-1	-4.2	-2.70	3024.689
25.18875	17.8	4	4	4	4	-1	-4.1	-2.40	2984.097
25.23375	17.8	4	4	3	2	-1	-3.9	-2.50	3000.780
25.70625	17.8	4	4	3	3	-1	-4.2	-2.00	2991.046
26.19750	17.8	4	4	4	3	-1	-4.1	-2.20	3018.870
26.27062	17.8	4	4	3	2	-1	-4.1	-2.14	3020.535
26.29312	17.8	4	4	4	3	-1	-3.6	-2.70	3012.314

22 Tuesday, 2021-02-02

Final tables showing the performance of the 600 and 1200 GHz receivers. The column pri contains a 1 (one) for the 11 preferred frequencies.

Table 12: 600 GHz performance (final table)
GHz	dBm	MPA	FRM	bias 300	P_hot	T_rec	pri
22.340625	14.20	4	5	-2.30	-35.7	1014	0
22.342500	14.20	4	5	-2.30	-35.6	1023	0
22.344375	14.20	4	6	-2.50	-35.9	1008	0
22.346250	14.20	5	5	-2.60	-36.0	1013	0
22.348125	14.20	5	5	-2.60	-35.9	1007	0
22.374375	14.20	2	6	-1.70	-35.7	965	0
22.404375	14.20	5	3	-2.70	-35.7	984	1
22.447500	14.20	4	3	-2.70	-35.8	1015	0
22.453125	14.20	6	4	-3.90	-36.0	1016	0
22.479375	14.20	6	1	-3.50	-35.7	1000	0
22.490625	14.20	7	0	-2.70	-35.9	989	1
22.522500	14.20	3	4	-2.60	-35.7	994	0
22.545000	14.20	5	2	-2.20	-35.8	983	0
22.569375	14.20	3	4	-2.40	-35.8	993	0
22.575000	14.20	5	1	-1.20	-35.7	998	0
22.593750	14.20	3	4	-2.00	-35.7	991	0
22.618125	14.20	4	5	-3.00	-35.7	975	0
22.657500	14.20	4	4	-2.60	-35.7	971	0
22.695000	14.20	3	4	-2.00	-35.7	993	0
22.725000	14.20	5	3	-2.20	-35.8	1001	0
22.726875	14.20	5	3	-2.10	-35.8	1003	0
22.728750	14.20	6	3	-1.90	-35.7	1004	0
22.730625	14.20	5	4	-1.30	-35.7	1001	0
22.732500	14.20	3	5	-1.20	-35.8	999	0
22.751250	14.20	5	4	-1.60	-35.7	1000	0
22.756875	14.20	7	3	-2.80	-35.7	1000	0
22.786875	14.20	3	6	-2.90	-35.8	1008	0
22.809375	14.20	5	5	-3.00	-35.9	1046	0
22.837500	14.20	5	5	-3.90	-35.7	1010	0
22.863750	14.20	3	4	-1.50	-35.7	999	0
22.888125	14.20	4	7	-3.30	-35.7	1012	0
22.912500	14.20	5	2	-1.30	-35.8	1034	0
22.935000	14.20	4	3	-2.30	-35.7	1044	0
22.957500	14.20	3	4	-2.20	-35.6	1040	0
22.991250	14.20	3	4	-1.50	-35.7	1051	0
23.004375	14.20	3	4	-2.60	-35.6	1047	0
23.023125	14.20	4	3	-1.60	-35.7	1048	0
23.047500	14.20	3	5	-2.70	-35.5	1133	0
23.066250	14.20	4	4	-2.00	-35.7	1038	0
23.068125	14.20	4	4	-1.90	-35.7	1036	0
23.070000	14.20	5	3	-1.70	-35.7	1034	1
23.071875	14.20	4	4	-1.80	-35.8	1033	0
23.073750	14.20	5	3	-2.80	-35.7	1032	0
23.094375	14.20	7	2	-2.00	-35.7	1037	0
23.118750	14.20	7	2	-1.50	-35.7	1035	0
23.141250	14.20	7	2	-1.50	-35.6	1043	0
23.146875	14.20	7	2	-1.70	-35.8	1059	0
23.161875	14.20	6	4	-3.90	-35.7	1041	0
23.184375	14.20	6	4	-3.70	-35.7	1032	0
23.205000	14.20	5	2	-1.20	-35.6	1017	0
23.214375	14.20	4	4	-3.10	-35.7	1010	0
23.221875	14.20	5	2	-1.20	-35.6	1013	0
23.229375	14.20	6	1	-1.30	-35.7	1008	0
23.231250	14.20	6	1	-1.30	-35.6	1002	0
23.233125	14.20	6	1	-1.40	-35.6	1004	1
23.235000	14.20	5	2	-1.20	-35.6	1007	0
23.236875	14.20	4	3	-1.20	-35.6	1006	0
23.244375	14.20	4	3	-1.20	-35.7	1010	0
23.250000	14.20	4	3	-1.30	-35.6	1005	0
23.268750	14.20	6	2	-1.20	-35.7	1014	0
23.306250	14.20	4	3	-1.90	-35.6	1033	0
23.336250	14.20	5	2	-2.50	-35.6	1028	0
23.364375	14.20	6	2	-3.70	-35.6	1026	0
23.392500	14.20	2	4	-2.00	-35.5	1071	0
23.401875	14.20	3	3	-2.30	-35.5	1050	0
23.415000	14.20	6	0	-1.60	-35.3	1316	0
23.416875	14.20	3	2	-1.30	-35.7	1051	0
23.418750	14.20	3	2	-1.30	-35.6	1050	0
23.420625	14.20	3	2	-1.40	-35.6	1036	0
23.422500	14.20	1	4	-1.70	-35.6	1028	0
23.445000	14.20	3	2	-2.30	-35.7	1053	0
23.452500	14.20	3	1	-1.40	-35.6	1047	0
23.454375	14.20	3	1	-1.40	-35.6	1049	0
23.456250	14.20	5	1	-3.70	-35.6	1034	1
23.458125	14.20	3	1	-1.50	-35.6	1045	0
23.460000	14.20	2	2	-1.30	-35.7	1043	0
23.467500	14.20	2	2	-1.50	-35.6	1051	0
23.480625	14.20	3	3	-3.30	-35.6	1060	0
23.505000	14.20	1	3	-2.30	-35.7	1054	0
23.546250	14.20	1	2	-2.20	-35.6	1040	0
23.576250	14.20	1	2	-2.60	-35.6	1053	0
23.593125	14.20	1	1	-2.30	-35.6	1067	0
23.600625	14.20	2	0	-2.30	-35.6	1078	0
23.602500	14.20	2	1	-3.20	-35.6	1076	0
23.604375	14.20	1	1	-2.00	-35.7	1072	1
23.606250	14.20	1	1	-2.10	-35.7	1079	0
23.608125	14.20	1	2	-3.30	-35.6	1082	0
23.615625	14.20	2	1	-1.70	-35.7	1080	0
23.634375	14.20	1	2	-2.90	-35.6	1110	0
23.647500	14.20	5	2	-1.20	-35.6	1110	0
23.651250	14.20	5	2	-1.80	-35.5	1152	0
23.658750	14.20	5	2	-1.80	-35.6	1097	0
23.660625	14.20	5	2	-1.80	-35.7	1095	0
23.662500	14.20	5	2	-2.20	-35.6	1089	1
23.664375	14.20	3	3	-2.60	-35.6	1088	0
23.666250	14.20	6	2	-2.10	-35.7	1079	0
23.673750	14.20	4	3	-3.70	-35.7	1076	0
23.698125	14.20	7	2	-1.30	-35.6	1082	0
23.730000	14.20	1	5	-1.20	-35.6	1072	0
23.731875	14.20	2	6	-2.20	-35.7	1073	0
23.733750	14.20	4	2	-1.20	-35.6	1084	0
23.735625	14.20	2	6	-2.10	-35.6	1082	0
23.737500	14.20	2	5	-2.00	-35.6	1076	0
23.750625	14.20	2	4	-1.60	-35.6	1091	0
23.758125	14.20	3	5	-2.50	-35.6	1087	0
23.760000	14.20	3	5	-2.50	-35.6	1080	0
23.761875	14.20	6	5	-3.50	-35.6	1092	1
23.763750	14.20	4	4	-2.90	-35.6	1085	0
23.765625	14.20	6	4	-3.50	-35.6	1075	0
23.773125	14.20	5	6	-3.20	-35.6	1079	0
23.803125	14.20	2	3	-1.30	-35.7	1106	0
23.842500	14.20	4	1	-1.60	-35.6	1087	0
23.883750	14.20	5	1	-3.20	-35.5	1075	0
23.919375	14.20	3	5	-3.70	-35.6	1074	0
23.994375	14.20	6	4	-2.60	-35.5	1060	0
24.031875	14.20	7	2	-1.50	-35.5	1065	0
24.050625	14.20	5	4	-2.10	-35.5	1053	0
24.105000	14.20	3	5	-2.00	-35.6	1064	0
24.138750	14.20	4	4	-2.60	-35.6	1047	0
24.157500	14.20	7	1	-1.90	-35.6	1047	0
24.172500	14.20	6	2	-1.80	-35.5	1041	0
24.223125	14.20	6	2	-3.00	-35.5	1040	0
24.230625	14.20	4	4	-2.70	-35.5	1041	0
24.232500	14.20	4	4	-2.90	-35.5	1044	0
24.234375	14.20	5	3	-3.10	-35.5	1042	1
24.236250	14.20	5	3	-3.20	-35.5	1040	0
24.238125	14.20	3	5	-3.90	-35.5	1041	0
24.245625	14.20	7	2	-2.90	-35.5	1047	0
24.251250	14.20	6	3	-3.30	-35.4	1051	0
24.260625	14.20	5	4	-3.90	-35.5	1048	0
24.294375	14.20	6	3	-2.60	-35.8	1116	0
24.322500	14.20	6	2	-1.50	-35.2	1248	0
24.331875	14.20	3	4	-2.30	-35.2	1200	0
24.343125	14.20	2	5	-2.80	-35.5	1065	0
24.382500	14.20	7	0	-1.20	-35.5	1070	0
24.393750	14.20	3	3	-1.40	-35.4	1063	0
24.408750	14.20	5	1	-2.50	-35.5	1059	0
24.444375	14.20	4	4	-3.80	-35.5	1058	0
24.487500	14.20	3	2	-4.30	-35.5	1067	0
24.498750	14.20	3	2	-2.30	-35.4	1072	0
24.532500	14.20	3	1	-3.70	-35.5	1074	0
24.551250	14.20	4	0	-3.40	-35.5	1076	0
24.601875	14.20	3	1	-3.70	-35.7	1089	0
24.630000	14.20	2	2	-3.40	-35.5	1081	0
24.656250	14.20	3	1	-3.90	-35.6	1081	0
24.682500	14.20	2	1	-3.10	-35.5	1082	0
24.708750	14.20	2	0	-2.30	-35.5	1083	0
24.733125	14.20	2	4	-3.90	-35.3	1112	0
24.735000	14.20	2	7	-3.60	-35.6	1090	0
24.742500	14.20	2	6	-3.80	-35.5	1086	0
24.744375	14.20	2	6	-3.80	-35.5	1089	0
24.746250	14.20	2	6	-3.80	-35.5	1086	1
24.748125	14.20	3	7	-3.90	-35.5	1090	0
24.750000	14.20	2	6	-3.90	-35.5	1084	0
24.757500	14.20	2	6	-3.90	-35.5	1092	0
24.780000	14.20	1	5	-3.90	-35.5	1095	0
24.787500	14.20	1	6	-3.90	-35.5	1094	0
24.823125	14.20	1	7	-1.70	-35.4	1108	0
24.845625	14.20	1	3	-2.00	-35.4	1107	0
24.871875	14.20	2	1	-3.50	-35.4	1117	0
24.901875	14.20	3	5	-2.90	-35.4	1116	0
24.909375	14.20	3	4	-2.00	-35.4	1118	0
24.928125	14.20	4	4	-3.50	-35.4	1122	0
24.950625	14.20	5	3	-3.70	-35.4	1124	0
24.997500	14.20	2	5	-1.70	-35.5	1140	0
25.021875	14.20	3	3	-1.90	-35.4	1149	0
25.051875	14.20	3	4	-1.80	-35.4	1157	0
25.059375	14.20	3	4	-2.30	-35.3	1161	0
25.074375	14.20	3	4	-2.40	-35.5	1161	0
25.111875	14.20	5	2	-2.30	-35.3	1179	0
25.147500	14.20	7	1	-1.90	-35.4	1196	0
25.183125	14.20	5	3	-2.00	-35.3	1203	0
25.220625	14.20	6	2	-1.80	-35.4	1221	0
25.246875	14.20	7	1	-1.90	-35.4	1225	0
25.263750	14.20	6	2	-2.20	-35.4	1223	0
25.288125	14.20	3	4	-2.00	-35.4	1235	0
25.316250	14.20	6	2	-3.00	-35.4	1240	0
25.344375	14.20	3	4	-1.30	-35.4	1265	0
25.387500	14.20	6	2	-1.60	-35.3	1274	0
25.428750	14.20	4	3	-2.90	-35.3	1284	0
25.470000	14.20	4	3	-2.80	-35.3	1307	0
25.511250	14.20	4	2	-2.50	-35.3	1342	0
25.550625	14.20	2	3	-3.10	-35.3	1341	0
25.561875	14.20	3	2	-3.20	-35.3	1351	0
25.575000	14.20	1	3	-2.60	-35.2	1342	0
25.595625	14.20	1	3	-3.60	-35.2	1355	0
25.644375	14.20	2	1	-2.40	-35.2	1369	0
25.691250	14.20	1	1	-3.10	-35.3	1390	0
25.726875	14.20	2	0	-1.80	-35.3	1409	0
25.758750	14.20	2	0	-1.20	-35.2	1446	0
25.790625	14.20	1	1	-3.90	-35.2	1456	0
25.830000	14.20	2	0	-3.50	-35.3	1500	0
25.854375	14.20	1	0	-3.00	-35.1	1523	0
25.863750	14.20	1	0	-3.10	-35.2	1525	0
25.899375	14.20	1	6	-3.50	-35.2	1556	0
25.933125	14.20	1	2	-3.20	-35.3	1569	0
25.970625	14.20	1	6	-3.40	-35.1	1612	0
26.000625	14.20	2	5	-3.50	-35.2	1631	0
26.034375	14.20	3	4	-2.70	-35.2	1667	0
26.066250	14.20	5	1	-3.80	-35.1	1693	0
26.085000	14.20	6	0	-3.10	-35.1	1718	0
26.092500	14.20	3	5	-2.60	-35.2	1708	0
26.094375	14.20	4	5	-3.50	-35.1	1735	0
26.096250	14.20	3	5	-2.60	-35.2	1720	1
26.098125	14.20	5	3	-3.60	-35.2	1722	0
26.100000	14.20	2	6	-1.90	-35.3	1721	0
26.107500	14.20	2	6	-2.20	-35.2	1738	0
26.141250	14.20	4	2	-2.50	-35.2	1812	0
26.188125	14.20	5	3	-1.50	-35.2	1857	0
26.225625	14.20	6	2	-2.50	-35.1	1899	0
26.259375	14.20	6	3	-2.40	-35.1	1949	0
26.291250	14.20	7	2	-3.90	-35.2	1988	0
26.330625	14.20	2	7	-2.30	-34.9	2282	0

Table 13: 1200 GHz performance (final table)
GHz	dBm	MPA_A	MPA_B	FRM_A	FRM_B	SHM	bias 300	bias 600	P_hot	T_rec	pri
22.335000	18.80	4	4	5	6	3	-1.30	-1.20	-31.8	2273	0
22.353750	18.80	4	4	4	5	3	-1.40	-1.00	-31.9	2294	0
22.503750	18.80	4	4	5	6	3	-1.60	-0.60	-32.0	2386	0
22.541250	18.80	4	4	5	6	3	-1.70	-0.60	-32.2	2463	0
22.578750	18.80	4	4	6	6	3	-1.70	-0.60	-32.5	2638	0
22.597500	18.80	4	4	5	6	3	-1.90	-0.60	-32.5	2741	0
22.616250	18.80	4	4	5	6	3	-2.00	-0.60	-32.6	2803	0
22.635000	18.80	4	4	5	6	3	-1.80	-0.70	-32.6	2836	0
22.653750	18.80	4	4	5	6	3	-2.00	-0.70	-32.6	2845	0
22.670625	18.80	4	4	5	5	3	-1.80	-1.00	-32.6	2773	0
22.700625	18.80	4	4	3	4	3	-1.70	-1.40	-32.3	2578	0
22.717500	18.80	4	4	6	5	3	-1.40	-1.30	-32.0	2455	0
22.736250	18.80	4	4	5	5	2	-1.80	-1.30	-32.2	2456	0
22.755000	18.80	4	4	5	5	2	-1.80	-1.50	-31.9	2335	0
22.777500	18.80	4	4	5	5	1	-1.80	-1.50	-31.9	2286	0
22.792500	18.80	4	4	4	5	0	-1.60	-1.20	-32.0	2277	0
22.809375	18.80	4	4	4	5	0	-1.70	-1.30	-31.7	2247	0
22.826250	18.80	4	4	5	4	0	-1.60	-1.20	-31.7	2254	1
22.839375	18.80	4	4	4	4	0	-2.00	-1.40	-31.8	2241	0
22.850625	18.80	4	4	4	4	0	-2.30	-1.80	-31.7	2221	0
22.869375	18.80	4	4	5	5	-1	-1.90	-1.10	-31.8	2227	0
22.886250	18.80	4	4	3	4	-1	-1.80	-0.70	-31.9	2256	0
22.905000	18.80	4	4	3	3	-1	-2.20	-1.30	-31.8	2289	0
22.923750	18.80	4	4	3	3	-1	-2.00	-1.60	-31.8	2255	0
22.940625	18.80	4	4	5	5	-1	-2.20	-1.40	-32.1	2310	1
22.950000	18.80	4	4	4	5	-1	-2.00	-1.40	-32.3	2373	0
22.968750	18.80	4	4	4	4	0	-2.00	-1.00	-31.7	2271	0
22.987500	18.80	4	4	4	5	0	-2.30	-0.70	-31.9	2261	0
23.006250	18.80	4	4	4	5	1	-1.70	-0.90	-32.1	2353	0
23.021250	18.80	4	4	4	5	2	-1.80	-0.80	-31.9	2428	0
23.040000	18.80	4	4	4	5	2	-1.90	-0.90	-32.0	2456	0
23.058750	18.80	4	4	5	5	2	-2.20	-1.00	-32.1	2500	0
23.071875	18.80	4	4	5	5	2	-2.20	-0.80	-32.1	2501	0
23.088750	18.80	4	4	4	5	3	-2.20	-1.20	-32.0	2589	0
23.100000	18.80	4	4	4	5	3	-2.40	-1.10	-32.0	2591	0
23.111250	18.80	4	4	4	4	3	-2.30	-0.80	-32.0	2629	0
23.126250	18.80	4	4	5	4	3	-2.30	-1.10	-32.0	2605	0
23.141250	18.80	4	4	4	5	3	-2.40	-1.00	-32.0	2616	0
23.152500	18.80	4	4	4	5	3	-2.50	-1.10	-32.0	2657	0
23.163750	18.80	4	4	3	4	3	-2.50	-0.80	-32.0	2654	0
23.175000	18.80	4	4	5	5	3	-2.60	-1.10	-32.1	2671	0
23.190000	18.80	4	4	4	5	3	-2.40	-1.00	-32.0	2623	0
23.206875	18.80	4	4	5	5	3	-2.30	-0.80	-32.0	2651	0
23.223750	18.80	4	4	4	5	2	-2.20	-0.80	-32.2	2625	0
23.244375	18.80	4	4	5	5	2	-2.50	-1.00	-32.1	2525	0
23.268750	18.80	4	4	4	4	2	-2.00	-0.80	-31.8	2528	0
23.287500	18.80	4	4	5	5	1	-1.90	-0.80	-32.2	2550	0
23.310000	18.80	4	4	5	5	1	-1.60	-0.80	-31.9	2514	0
23.319375	18.80	4	4	5	5	0	-1.80	-0.80	-32.0	2461	1
23.338125	18.80	4	4	5	4	0	-2.10	-1.00	-31.8	2465	0
23.358750	18.80	4	4	3	3	0	-1.80	-1.10	-31.8	2473	0
23.377500	18.80	4	4	5	4	0	-2.30	-1.60	-31.8	2466	0
23.392500	18.80	4	4	4	5	-1	-1.90	-0.90	-31.9	2404	0
23.413125	18.80	4	4	5	5	-1	-2.30	-0.60	-31.8	2379	0
23.431875	18.80	4	4	5	5	-1	-2.50	-1.00	-31.7	2390	0
23.450625	18.80	4	4	5	5	-1	-2.60	-1.40	-31.7	2382	0
23.461875	18.80	4	4	5	5	-1	-2.50	-0.80	-31.8	2400	0
23.476875	18.80	4	4	5	4	-1	-1.70	-1.30	-31.8	2397	0
23.493750	18.80	4	4	5	5	-1	-2.30	-1.20	-31.8	2420	0
23.516250	18.80	4	4	4	5	-1	-1.90	-1.00	-32.2	2554	0
23.535000	18.80	4	4	4	4	0	-2.00	-1.50	-31.8	2495	0
23.559375	18.80	4	4	4	5	0	-2.00	-0.99	-31.8	2528	1
23.585625	18.80	4	4	4	5	1	-1.70	-1.10	-32.0	2597	0
23.604375	18.80	4	4	5	5	1	-2.10	-1.20	-32.1	2644	0
23.617500	18.80	4	4	5	5	2	-1.80	-0.90	-31.8	2675	0
23.636250	18.80	4	4	4	5	2	-2.10	-1.10	-31.8	2674	0
23.664375	18.80	4	4	4	5	2	-2.00	-1.08	-31.8	2661	0
23.701875	18.80	4	4	4	5	2	-2.20	-0.90	-31.9	2678	0
23.730000	18.80	4	4	4	4	2	-2.20	-1.12	-31.9	2640	0
23.761875	18.80	4	4	3	4	2	-2.00	-0.92	-31.8	2694	0
23.791875	18.80	4	4	4	5	1	-2.00	-0.80	-32.0	2625	0
23.812500	18.80	4	4	4	5	0	-2.20	-1.00	-32.0	2524	0
23.842500	18.80	4	4	5	4	0	-1.80	-1.30	-31.6	2574	0
23.868750	18.80	4	4	4	4	0	-1.60	-1.90	-31.5	2566	0
23.898750	18.80	4	4	4	5	-1	-2.20	-1.10	-31.9	2439	0
23.913750	18.80	4	4	3	4	-1	-2.50	-1.00	-31.8	2413	0
23.938125	18.80	4	4	3	4	-1	-2.40	-1.00	-31.7	2431	0
23.962500	18.30	4	4	4	3	-1	-2.30	-1.18	-31.7	2427	0
23.992500	18.30	4	4	3	3	-1	-2.60	-0.47	-31.9	2411	0
24.007500	18.30	4	4	3	3	-1	-2.80	-0.71	-31.9	2395	0
24.035625	18.30	4	4	4	4	-1	-2.80	-0.70	-31.9	2400	0
24.061880	18.30	4	4	5	4	-1	-2.70	-1.50	-31.8	2373	0
24.086250	18.30	4	4	5	5	-1	-2.50	-1.20	-32.0	2409	0
24.103125	18.30	4	4	4	4	0	-2.70	-1.60	-31.5	2526	0
24.118125	18.30	4	4	5	4	0	-2.70	-1.87	-31.8	2447	0
24.148125	18.30	4	4	4	5	0	-2.60	-1.60	-31.8	2415	0
24.166875	18.30	4	4	4	5	0	-2.30	-1.50	-32.1	2463	0
24.183750	18.30	4	4	4	5	1	-2.50	-1.90	-31.9	2450	0
24.198750	18.30	4	4	4	5	1	-2.40	-2.10	-32.1	2475	0
24.215625	18.30	4	4	4	5	1	-2.10	-1.80	-32.1	2489	0
24.243750	18.30	4	4	4	5	1	-2.40	-1.60	-32.0	2462	0
24.256875	18.30	4	4	4	5	1	-2.30	-2.00	-32.0	2462	0
24.285000	18.30	4	4	5	5	1	-2.40	-1.50	-32.0	2447	0
24.303750	18.30	4	4	4	5	1	-2.40	-0.90	-31.9	2442	0
24.324375	18.30	4	4	4	5	0	-2.60	-1.00	-32.1	2434	0
24.335625	18.30	4	4	4	5	0	-2.50	-0.70	-32.0	2387	0
24.352500	18.30	4	4	4	5	0	-2.80	-1.10	-31.7	2393	0
24.371250	18.30	4	4	5	4	0	-3.10	-1.40	-31.7	2408	0
24.391875	18.30	4	4	5	5	0	-3.40	-1.50	-31.8	2400	0
24.410625	18.30	4	4	4	3	0	-3.20	-2.30	-31.8	2362	1
24.435000	18.30	4	4	4	4	-1	-2.80	-1.20	-32.0	2338	0
24.450000	18.30	4	4	4	4	-1	-2.60	-1.20	-31.7	2292	0
24.466880	18.30	4	4	5	4	-1	-3.10	-1.30	-31.8	2306	0
24.495000	18.30	4	4	3	2	-1	-3.20	-1.50	-31.8	2321	0
24.523125	18.30	4	4	5	4	-1	-3.60	-0.80	-31.7	2307	0
24.562500	18.30	4	4	3	3	-1	-3.70	-1.50	-31.8	2316	0
24.573750	18.30	4	4	3	3	-1	-3.80	-1.30	-31.8	2295	0
24.601875	18.30	4	4	3	2	-1	-3.60	-1.20	-31.9	2346	0
24.630000	18.30	4	4	3	2	-1	-3.60	-1.60	-31.8	2335	0
24.661880	18.30	4	4	3	2	-1	-3.30	-1.80	-31.8	2320	0
24.686250	18.30	4	4	4	5	-1	-3.10	-1.80	-31.8	2319	0
24.712500	18.30	4	4	4	4	0	-3.60	-2.90	-31.7	2427	0
24.740625	18.30	4	4	4	4	0	-3.30	-2.80	-31.5	2475	0
24.768750	18.30	4	4	4	5	0	-3.70	-2.80	-31.8	2426	0
24.791250	18.30	4	4	5	5	0	-2.70	-2.70	-31.9	2459	0
24.811875	18.30	4	4	4	5	0	-3.40	-2.90	-31.8	2451	0
24.840000	18.30	4	4	5	4	0	-3.70	-2.80	-31.8	2451	0
24.855000	18.30	4	4	4	4	0	-3.70	-3.00	-31.8	2457	0
24.873750	18.30	4	4	4	4	0	-3.70	-2.20	-31.7	2505	0
24.901875	18.30	4	4	3	3	0	-3.80	-2.40	-31.8	2399	0
24.956250	18.30	4	4	5	4	-1	-3.10	-1.40	-32.0	2397	0
24.984375	18.30	4	4	4	5	-1	-3.80	-1.30	-31.7	2349	0
25.014380	17.80	4	4	4	4	-1	-3.90	-1.10	-31.8	2387	0
25.035000	17.80	4	4	4	3	-1	-3.80	-1.50	-31.8	2389	0
25.050000	17.80	4	4	3	2	-1	-3.50	-1.30	-31.7	2392	0
25.066880	17.80	4	4	3	3	-1	-3.90	-1.10	-31.8	2408	0
25.085625	17.80	4	4	3	3	-1	-3.80	-0.80	-31.7	2397	0
25.106250	17.80	4	4	3	2	-1	-3.20	-1.00	-31.7	2407	0
25.123125	17.80	4	4	3	2	-1	-3.50	-1.40	-31.9	2391	0
25.160625	17.80	4	4	3	2	-1	-3.50	-2.00	-31.7	2347	0
25.188750	17.80	4	4	3	2	-1	-3.60	-2.30	-31.8	2395	1
25.205625	17.80	4	4	3	2	-1	-3.40	-2.40	-31.8	2388	0
25.233750	17.80	4	4	3	2	-1	-3.90	-2.50	-31.9	2398	1
25.265625	17.80	4	4	3	4	-1	-3.30	-2.50	-31.7	2403	0
25.284380	17.80	4	4	4	4	-1	-3.80	-2.30	-31.7	2398	0
25.327500	17.80	4	4	4	5	-1	-3.70	-3.00	-32.0	2456	0
25.338750	17.80	4	4	4	4	-1	-3.80	-2.80	-32.1	2450	0
25.355625	17.80	4	4	5	4	-1	-3.40	-2.90	-32.1	2478	0
25.393125	17.80	4	4	4	5	-1	-3.10	-2.60	-32.2	2478	0
25.438125	17.80	4	4	4	5	-1	-3.20	-2.80	-32.2	2487	0
25.477500	17.80	4	4	4	5	-1	-3.40	-1.80	-31.6	2417	0
25.500000	17.80	4	4	4	4	-1	-3.90	-1.80	-31.8	2420	0
25.522500	17.80	4	4	4	3	-1	-3.90	-1.70	-31.7	2383	0
25.548750	17.80	4	4	4	3	-1	-4.10	-1.60	-31.7	2367	0
25.584380	17.80	4	4	4	3	-1	-3.90	-0.80	-31.7	2399	0
25.605000	17.80	4	4	4	3	-1	-3.90	-0.90	-31.7	2389	0
25.642500	17.80	4	4	3	3	-1	-3.90	-1.00	-31.5	2394	0
25.706250	17.80	4	4	3	3	-1	-4.20	-2.00	-31.7	2390	1
25.725000	17.80	4	4	4	3	-1	-3.40	-2.20	-31.8	2353	0
25.753125	17.80	4	4	4	3	-1	-3.40	-2.10	-31.7	2350	0
25.790625	17.80	4	4	4	3	-1	-3.50	-2.10	-31.8	2342	0
25.798125	17.80	4	4	6	5	-1	-3.60	-2.80	-31.8	2320	0
25.835625	17.80	4	4	4	3	-1	-3.90	-2.70	-31.5	2381	0
25.854380	17.80	4	4	4	3	-1	-3.10	-2.90	-31.6	2333	0
25.869380	17.80	4	4	3	3	-1	-3.80	-3.20	-31.8	2318	0
25.906880	17.80	4	4	3	2	-1	-3.10	-2.80	-31.8	2325	0
25.933125	17.80	4	4	3	2	-1	-2.80	-2.60	-31.7	2359	0
25.953750	17.80	4	4	3	2	-1	-3.20	-2.00	-31.5	2373	0
25.991250	17.80	4	4	3	2	-1	-3.70	-1.80	-31.7	2351	0
26.025000	17.80	4	4	3	2	-1	-3.80	-2.10	-31.9	2342	0
26.043750	17.80	4	4	3	2	-1	-3.90	-2.00	-31.7	2323	0
26.062500	17.80	4	4	3	2	-1	-3.90	-2.20	-31.6	2370	0
26.085000	17.80	4	4	3	2	-1	-3.90	-1.50	-31.7	2368	0
26.103750	17.80	4	4	3	2	-1	-3.90	-1.40	-31.7	2364	0
26.118750	17.80	4	4	4	3	-1	-3.90	-1.10	-31.5	2416	0
26.141250	17.80	4	4	3	2	-1	-4.00	-1.20	-31.4	2442	0
26.158125	17.80	4	4	4	3	-1	-4.10	-2.10	-31.5	2422	0
26.176875	17.80	4	4	3	2	-1	-3.90	-2.10	-31.6	2449	0
26.197500	17.80	4	4	3	2	-1	-3.90	-2.20	-31.5	2518	1
26.235000	17.80	4	4	3	3	-1	-4.20	-2.20	-31.5	2403	0
26.270625	17.80	4	4	3	2	-1	-4.10	-2.14	-31.7	2413	1
26.293125	17.80	4	4	3	2	-1	-3.90	-2.50	-31.5	2470	1
26.321250	17.80	4	4	3	2	-1	-3.70	-2.70	-31.8	2478	0
26.351250	17.80	4	4	4	3	-1	-3.30	-2.80	-31.4	2557	0
26.385000	17.80	4	4	5	4	-1	-3.20	-3.00	-31.7	2486	0
26.422500	17.80	4	4	3	2	-1	-3.20	-2.60	-31.6	2462	0
26.460000	17.80	4	4	5	4	-1	-3.30	-2.70	-31.8	2451	0
26.497500	17.80	4	4	4	3	-1	-3.30	-2.70	-31.8	2483	0
26.521880	17.80	4	4	5	4	-1	-2.80	-2.90	-31.8	2499	0
26.540625	17.80	4	4	4	3	-1	-3.30	-3.20	-31.2	2466	0
26.568750	17.80	4	4	6	5	-1	-3.60	-2.70	-31.5	2465	0
26.602500	17.80	4	4	3	2	-1	-3.70	-2.40	-31.7	2334	0
26.666250	17.80	4	4	4	3	-1	-3.50	-2.70	-31.5	2489	0

23 Wednesday, 2021-02-03

Measurements of sideband ratio for the 600 and 1200 GHz receiver in parallel. Started with eleven selected frequencies.

24 Thursday, 2021-02-04

24.1 Spurious measurements for the 1200 GHz receiver.

Same procedure as for the 600 GHz receiver, but note that the transmitter signal at the higher frequencies was too weak to be seen.

Results:

24.2 Test of the distribution board at three selected frequencies:

for the 600 GHz receiver at
1. 23.070000 GHz
2. 24.234375 GHz
3. 26.096250 GHz
for the 1200 GHz receiver at
1. 23.319375 GHz
2. 24.410625 GHz
3. 25.188750 GHz

Spectra for the 600/1200 GHz receiver were taken with the ACS-A/ACS-B channel, respectively. Note that, for a given time stamp you have one ACS-A and one ACS-B spectrum, but only one of them will contain useful data.

Results:

File containing ACS spectra

24.3 Sideband ratio

Measurements of sideband ratio for the 600 and 1200 GHz receiver continued. Now at remaining frequencies.

25 Friday, 2021-02-05

25.1 Test of continuum channel

The 600 and 1200 GHz continuum channels were tested using eight different integration times, switching between hot and cold load for 10 minutes. The table below lists mean observed intensities and their standard deviation as a function of receiver, load and integration time in millseconds.

Table 14: Test of continuum channels
Rx	load	ms	mean	stddev
600	cold	100	37.79113	0.040007079
1200	cold	100	42.47786	0.058733173
600	hot	100	38.39888	0.031859468
1200	hot	100	43.34422	0.030132161
600	cold	200	37.58249	0.019205199
1200	cold	200	42.27819	0.037069094
600	hot	200	38.26428	0.015214640
1200	hot	200	43.22060	0.024574433
600	cold	400	37.49931	0.006546842
1200	cold	400	42.19848	0.018704258
600	hot	400	38.20694	0.018729940
1200	hot	400	43.21973	0.022385538
600	cold	800	37.45562	0.006458569
1200	cold	800	42.18464	0.013475480
600	hot	800	38.18778	0.008914205
1200	hot	800	43.18605	0.012537242
600	cold	1000	37.43616	0.005828175
1200	cold	1000	42.20615	0.012773424
600	hot	1000	38.18058	0.008356817
1200	hot	1000	43.22860	0.016634975
600	cold	1200	37.42029	0.004601058
1200	cold	1200	42.21812	0.013865336
600	hot	1200	38.16793	0.011487500
1200	hot	1200	43.21701	0.013349032
600	cold	1500	37.40041	0.009116879
1200	cold	1500	42.18805	0.013559009
600	hot	1500	38.16004	0.005628693
1200	hot	1500	43.24708	0.014945723
600	cold	2000	37.39574	0.004662329
1200	cold	2000	42.25572	0.015072585
600	hot	2000	38.16669	0.010610326
1200	hot	2000	43.29493	0.016152834

25.2 Spectral response measurements for the 1200 GHz receiver.

Same procedure as for the 600 GHz receiver, but note that the transmitter signal at the higher frequencies was probably too weak to be seen.

Results:

25.3 Sideband ratio

Measurements of sideband ratio for the 600 and 1200 GHz receiver continued at remaining frequencies.

26 Saturday, 2021-02-06

Continuation of sideband ratio masurements.

27 Sunday, 2021-02-07

Continuation of sideband ratio masurements.

All ACS spectra from these measurements are available here:

These are zip-files with ACS spectra stored in Json format, sorted by frequency.

Sideband gains were fitted following the procdure outlined in Renker et.al. Note, that many of the frequencies were scanned more than once, not necessarily at the same stepping resolution. The following two plots show fits at three different ACS channels for the case of LO = 537.705 GHz

2501 steps of 0.01 mm from 102 mm down to 77 mm
201 steps of 0.05 mm from 102 mm down to 92 mm

Figure 33: Fine stepping with 0.01 mm steps

Figure 34: Coarse stepping with 0.05 mm steps

All derived gains from 620 scans in each of the 1024 ACS channels are available in this csv-file. The resulting spectra of LSB and USB gains are shown in this document. Note, that plots at a given LO frequency may be an overlay of several scans, i.e. all 620 scans result in a total of 396 plots.

We can focus on only a few ACS channels in order to see the overall trend across the full tuning ranges of the two receivers, otherwise such a plot gets far too crowded. Using channels 256, 512 and 768, we get figure 35.