ELOG CARME

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

CARME

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Entry time:

Sun Apr 6 10:17:49 2025

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11.15 CARME IE514 ion gauge remains OFF
      ML says there are 2x ion gauges with line of sight to the DSSSDs - CARME IE514 (now off) and another controlled by the vacuum group - he will request that this is 
turned off Monday
      ML says that ion gauges within the upstream e-target should not have line of sight to the DSSSDs
 
      FEE64 power ON

ASIC settings 
       appear to be using mixture of 2022Jan31-11-52-00, 2024Jan20-12.02.08, 2024Feb08-15.59.09 and 2024Apr24-14.14.03 settings

[npg@carme-gsi Options]$ pwd
/home/npg/MIDAS_Releases/23Jan19/MIDAS_200119/DB/EXPERIMENTS/AIDA/Options
[npg@carme-gsi Options]$ foreach f ( `ls` )
foreach? echo $f
foreach? cat $f/CONTENTS | grep settings
foreach? end
aida01
ASIC.settings string 2024Apr24-14.14.03
aida02
ASIC.settings string 2022Jan31-11-52-00
aida03
ASIC.settings string 2024Jan20-12.02.08
aida04
ASIC.settings string 2022Jan31-11-52-00
aida05
ASIC.settings string 2022Jan31-11-52-00
aida06
ASIC.settings string 2022Jan31-11-52-00
aida07
ASIC.settings string 2022Jan31-11-52-00
aida08
ASIC.settings string 2022Jan31-11-52-00
aida09
ASIC.settings string 2022Jan31-11-52-00
aida10
ASIC.settings string 2022Jan31-11-52-00
aida11
ASIC.settings string 2022Jan31-11-52-00
aida12
ASIC.settings string 2022Jan31-11-52-00
aida13
ASIC.settings string 2022Jan31-11-52-00
aida14
ASIC.settings string 2024Feb08-15.59.09
aida15
ASIC.settings string 2022Jan31-11-52-00
aida16
ASIC.settings string 2024Apr24-14.14.03

slow comparator 0x64 appears to be set for all FEE64s
      positive input (p+n junction strips) FEE64s aida01, 02, 05, 06, 09, 10, 11, 12, 13, 15 & 16
      negative input (n+n Ohmic strips) FEE64s aida03, 04, 07, 08 & 14

Check ASIC Load all FEE64s

All system wide checks OK

FEE64 temps OK - attachment 1

DSSSD bias & leakage current - attachment 2
       leakage currents remain high cf. June 2024

per FEE64 Rate spectra - attachment 3
       high rates observed for DSSSD#1 and DSSSD#3 n+n Ohmic strips
       2x hot p+n junction channels aida15

per FEE64 1.8.W spectra - 20us FSR - attachments 4-5

ADC data item stats - attachment 6
       high rates observed for DSSSD#1 and DSSSD#3 n+n Ohmic strips

CRYRING vacuum and temperature logs - attachments 7-8

12.51 Options DB re-constructed - see https://elog.ph.ed.ac.uk/CARME/665

ASIC settings for all FEE64s restored from 2024Apr24-14.14.03
       slow comparator 0x64 appears to be set for all FEE64s
       positive input (p+n junction strips) FEE64s aida01, 02, 05, 06, 11, 12, 15 & 16
       negative input (n+n Ohmic strips) FEE64s aida03, 04, 07, 08, 09, 10, 13 & 14

WR timestamps OK - attachment 9

14.25 EG&G Ortec 448 Pulser settings

Amplitude 90,000
      Normalise 5.00
      Attenuator x5 IN
      Frequency Relay Line (50Hz)
      t_r 100ns
      tau_d 50us
      Polarity +

per FEE64 Rate Spectra - attachments 10-11

per FEE64 1.8.L spectra - attachments 12-14
       Pulser peak width aida06 87 ch FWHM, aida08 94 ch FWHM
       electronic noise poor consistent with high leakage current and 1.8.W spectra above

ADC data item stats - attachment 15

15.50 Data transfer to Merger/TapeServer started
       Tape Server -> no storage mode
       Data directory APR25

16.30 DAQ STOP
      FEE64 power OFF
      DSSSD bias OFF

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Attachment 1: