09.00 CARME IE514 5.1e-11mbar

09.15 IE514 not working - one of cables disconnected?

      DSSSD #1 bias cable changed from SHV - Lemo 00.250 to SHV - 2x Lemo 00.250

      DSSSD #1 & #2 LK1 removed from n+n Ohmic side bias FEE64s

      aida11 HDMI cabling re-seated at MACB

10.26 DSSSD bias OK - attachment 1
      Ambient temperature +16.2 deg C

10.30 ADC data item stats OK - attachment 2
      aida06 & aida15 > 100k, all others c. 3k consistent with 50Hz pulser

10.34 per FEE64 Rate spectra - attachment 3
       OK except for known issues aida05, aida07 and aida16 - all others OK

      per p+n FEE64s 1.8.L spectra - attachment 4
       pulser peak width 52 ch FWHM aida11- double peaking DSSSD #1 & #2

      per n+n FEE64s 1.8.L spectra - attachment 7
       pulser peak width 77 ch FWHM aida04 - more uniform noise across all DSSSDs

10.42 per FEE64 1.8.W spectra - 20us FSR - attachments 5-6

11:00 LK2 removed from aida01-04. Configuration for all adaptor cards/FEE modules is now the same. No other change to the setup.

12:00 FEEs power on, bias to 150 V. No change in bias observed. 

12.02 ADC data item stats OK 
      aida06 & aida15 > 100k, all others c. 3k consistent with 50Hz pulser

12.07 per FEE64 Rate spectra 
       OK except for known issues aida05, aida07 and aida16 - all others OK
      
12:09  per p+n FEE64s 1.8.L spectra 
       We now observe a large peak around chn 30,000 on all FEEs. Perhaps an effect of some change in the ring?
       pulser peak width 53 ch FWHM aida11- still observe double peaking DSSSD #1 & #2

      per n+n FEE64s 1.8.L spectra 
      Lots of events at ~chn 65,000 - double peaking now observed on aida03 and aida04
      pulser peak width 93 ch FWHM aida14 

12.20 per FEE64 1.8.W spectra - 20us FSR 

      Perhaps bias was off while acquiring and spectra was not cleared properly. Re-do tests

13:40 ADC data item stats OK - attachment 7 
      aida06 & aida15 > 100k, all others c. 3k consistent with 50Hz pulser

       per FEE64 Rate spectra - attachment 8
       OK except for known issues aida05, aida07 and aida16 - all others OK

      per p+n FEE64s 1.8.L spectra - attachment 9 
       pulser peak width 55 ch FWHM aida11- double peaking DSSSD #1 & #2

      per n+n FEE64s 1.8.L spectra - attachment 10
       pulser peak width 65 ch FWHM aida14 - more uniform noise across all DSSSDs

       per FEE64 1.8.W spectra - 20us FSR - attachments 11-12 

      With help from NH updated firmware on all MACB modules to version 4/20 - see https://elog.ph.ed.ac.uk/CARME/482

      Timestamps for all FEE modules now correct - attachment 13

      MAC address of aida07 was found to be 41-b4-16 not 41-d4-16 as was labelled on the FEE module
       re-labelled FEE64
       dhcpd.conf and MIDAS startup.tcl updated, dhcpd and MIDAS 8015 server restarted - aida07 is now working OK
 
      CAEN N1419ET internal jumper fitted - outputs are no longer floating

15:20 ADC data item stats OK 
      aida06 & aida15 > 100k, all others c. 3k consistent with 50Hz pulser - attachment 14

       per FEE64 Rate spectra
       OK except for known issues aida05, and aida16 - all others OK  - attachment 15

      per p+n FEE64s 1.8.L spectra -
       pulser peak width 50 ch FWHM aida11- double peaking DSSSD #1 & #2 - attachment 16

      per n+n FEE64s 1.8.L spectra 
       pulser peak width 67 ch FWHM aida14 - more uniform noise across all DSSSDs

       per FEE64 1.8.W spectra - 20us FSR - aida14 missing from waveforms - attachments 17,18
 
   Swapped the test inputs so that +ve is now from the inverter and -ve direct from pulser.  - attachments 19,20. Observed reduced noise for when plugged directly into the pulser than when connected from the inverter. 



   Lowered threshold from 0x64 (1 MeV) to 0x20 (320 keV) - attachment 21, 22 - Observed increase in rates, in particular for the DSSD #1,2 pn side. Conclusion -> increased pulser width for DSSD #1,2 is real and not from the pulser
 


   aida01 lemo to water pipe (chamber ground) connection installed 

   ADC data item stats OK 
      aida06 & aida15 > 100k, all others c. 3k consistent with 50Hz pulser 

       per FEE64 Rate spectra
       OK except for known issues aida16 - all others OK 

      per p+n FEE64s 1.8.L spectra -
       pulser peak width 48 ch FWHM aida11- double peaking DSSSD #1 & #2 - attachment 23

      per n+n FEE64s 1.8.L spectra 
       pulser peak width 67 ch FWHM aida14 - attachment 24

       per FEE64 1.8.W spectra - 20us FSR - slightly reduced 100 kHz on pn waveforms - attachments 25,26

   Disconnected aida06 and replaced with the spare FEE module (mac address: 42:0d:16). Power cycled and updated config files. 

   ADC data item stats OK 
      aida15 > 100k, all others including aida06 c. 3k consistent with 50Hz pulser - attachment 27

       per FEE64 Rate spectra
       OK except for known issues aida16 - all others OK - attachment 28

      per p+n FEE64s 1.8.L spectra -
       pulser peak width 48 ch FWHM aida11- no longer observe double peaking DSSSD #1 & #2 but the pulser peaks are still broader compared to DSSD #3,4 - attachment 29

      per n+n FEE64s 1.8.L spectra 
       pulser peak width 55 ch FWHM aida14 - attachment 30

       per FEE64 1.8.W spectra - 20us FSR - greatly reduced 100 kHz on pn waveforms, dodgy FEE previously aida06 must@ve had some impact on DSSD#1,2 - attachments 31,32