Noise PSDs from series 07161024_1630, 30 minutes of 20 ms random traces, without the HV board. See Oct 21 for QET settings.

Note the peaks around 10 kHz in Side1pA and Side1pF. This suggests that we didn't quite avoid the oscillatory region of the transition for these TESs.

Another pattern is that the DIB4 channels - TES0, 1, and 8 - seem to be free of low-frequency peaks, between 200 and 5000 Hz, that are seen in several channels in the other two DIBs. So perhaps DCRC50[3] is “cleaner” than the other two DCRCs.

Noise PSDs from series 07161025_1710, 17 minutes of 20 ms random traces, with the HV board.

The PSDs above were taken after connecting to the HV board with Side 1 readout. Note that Side1pA, which is DCRC2pB, has many high-frequency peaks: this is the channel that crosses between ground planes on the HV board and is known to be noisier because of that.

Above are channel-by-channel comparisons of noise without (light) and with (dark) the HV board. Note that the same DCRC and channel are used in each case with the exception of TES5/Side1pA