15.40 DSSSD bias & leakage current OK - attachments 1-2
       log shows variations due to ambient temperature changes in CRYRING hall

      FEE64 temperatures OK - attachment 3

      WR timestamps OK - attachment 4

      System wide checks Ok *except* global clock (aida16) - attachments 5-6

      ADC data item stats OK - attachment 7

      per FEE64 Rate spectra - attachment 8

      per FEE64 1.8.L spectra - attachments 9-10
       have not been cleared in some time probably - will zero histograms & stats for later review

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

     Merger, TapeServer etc - attachments 13-14
      data file G22-222/R51_15

     Motion control - attachment 15

16.01 all histograms & stats zero'd

16.43 online per DSSSD energy spectra - attachment 16

      photographs of CRYRING beam & target diagnostics - attachments 17-22

18.45 Left DSSSDs cycled to clear high rates (c. 250k/FEE64) aida01-aida04 per https://elog.ph.ed.ac.uk/CARME/603

18.49 DAQ continues data file G22-201/R51_27

      DSSSD bias & leakage current OK - attachment 23

      FEE64 temperatures OK - attachment 24

      ADC data item stats OK - attachment 25

      per FEE64 Rate spectra - attachment 26

      online per DSSSD energy spectra - attachment 27

19.00 Beam less stable but most cycles 5e+7 or higher
      Target peaking c. 1e12 dropping to c. 6e11

19.09 CRYRING hall temperature increasing, DSSSD leakage current increasing - attachments 28-29


20.06 Beam less stable most cycles 1-2e+7 or higher
      Target c. 1-2e12

20.15 JM/CB advise changing Lakeshore 336 Temp Controller set point from 29k to 29.5K - done
      Average pressure decreases but rapid variations still observed - see attachment 30


21.00 contacted HKR to improve beam stability - they were alreday working on it but did not know what was causing the problem - will contact on-call CRYRING expert

      cycled L DSSSD to reset rates
      
21,10 beam 0ff - DSSDs OUT

      Increased target temperature to 30K to solve instability that developed again up to E12 density range.