ELOG DESPEC

AIDA GELINA BRIKEN nToF CRIB ISOLDE CIRCE nTOFCapture DESPEC DTAS EDI_PSA 179Ta CARME StellarModelling DCF K40

DESPEC

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Entry time:

Thu Sep 6 15:11:17 2018

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Attachment 1 - FEE64 temperatures illustrating (we assume) a faulty PSU temperature sensor for aida07

Attachment 2 - FEE64 temperatures following replacement of aida07

Attachment 3-5 - 1.*.W waveforms for aida01 - aida03 - LED settings for aida02 incorrect, aida01 adaptor PCB 
incorrectly aligned

Attachment 6-7 - 1.*.W waveforms for aida02 and aida04

Attachment 8-9 - aida01 - aida04 1.8.L spectra full range and expanded scale
                          pulser peak width c. 15-20 channels FWHM

Attachment 10-12 - good events stats for all FEE64s and all statistics for aida01 and aida05
                   Note aida01 - aida04 show rates expected, all other FEE64s show very rates due to noise
                   aida01 - aida04 adaptor PCB are well grounded to FEE64 copper mezzanine/cooling plate, the other 
FEE64s are not

Attachment 13-14 - aida01 - aida04 rate spectra before and after correcting alignment of aida01 adaptor PCB

Attachment 15 - aida01 - aida04 1.8.L spectra, expanded scale

Attachment 16 - illustrates high frequency noise (period 5 samples = 100ns) for aida01 which is not observed for 
aida02 - aida03
                subsequently determined that this is not due to a possible adaptor PCB fault by changing the adaptor 
PCB
                Note that with bias turned on this noise did appear when Bias was on but all the other groudning
connectors for aida05-aida12
were not in effect.

Attachment 17-19 - PuTTY connection to CAEN 1419ET 4ch high voltage supply illustrating PuTTY, N1419ET configuration 
and leakage current with 100V applied to adaptor PCBs (no input cabling or DSSSD connected)

Note the CAEN N1419ET appears as a 'USB ACM' device and we connect using /dev/ttyACM<n>.

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Attachment 1: