11.43 DAQ continues OK

      ASIC settings 2019May19-17.54.03
      slow comparator 0xa

      BNC PB-4 Pulser 
      Amplitude 90,000
      x5 attenuator IN
      Frequency 25Hz range, variable min. c. 2.5Hz
      t_r 100ns, tau_d 50us
      - polarity
      Delay MIN, tail pulse

      all system wide checks OK *except* nnaida7 fails ADC calibration

      detector biases & leakage currents OK - see attachments 1 & 2

      FEE64 temperatures OK - see attachment 3

      good event statistics - DSSSD#1 noisy - see attachments 4
      10x <20k, 19x <50k, 20x <100k cf. 13x <20k 22x < 50k 24x <100k yesterday afternoon
      Merger OK - see attachment 5
      TapeServer OK - see attachment 6

      p+n FEE64s 1.8.W spectra 20us FSR - DSSSD#1 noisy - attachment 7
      n+n FEE64s 1.8.W spectra 20us FSR - DSSSD#1 noisy - attachment 8
      1.8.L spectra - see attachments 9 & 10
      nnaida1 76 ch FWHM, nnaida3 83 ch FWHM - cf. 104 & 111 ch FWHM respectively yesterday aftenoon

      FEE64 Rate spectra - attachment 11
      Check ASIC Control *all* FEE64s & ASICs x2
      FEE64 Rate spectra - attachment 12

11.46 ADC data synchronised - attachment 13

      p+n FEE64s 1.8.W spectra 20us, 200us, 2ms & 20ms FSR - DSSSD#1 noisy - attachments 14-17

      Check ASIC Control *all* FEE64s & ASICs x2   - no change DSSSD#1 noise

      DSSSD#1 bias cycle - no change DSSSD#1 noise

      press Kapton Samtec into adaptor PCBs - reduces DSSSD#1 noise to previous levels

12.17 Julabo FL11006 chiller set point +20 deg C actual +20.0 deg C
      Water level c. 60% M-H markers
      Temperature +25.3 deg C dew point +7.6 deg C RH 32.2%

12.23 temporary fix for DSSSD#1 noise? check by
      zero all histograms
      zero DAQ stats

      ...and wait

      good event statistics - DSSSD#1 noisy - see attachments 18
      11x <20k, 21x <50k, 23x <100k

13.30 DAQ stop

      OH replaces LH kapton PCB for DSSSD#1 n+n FEE64s 20 & 23 which we suspect may be damaged due to twist
      placed on kpaton cables by weight of all ribbon cables + cu foil shielding - particularly pronounced
      for nnaida20

      good event statistics - OK - see attachments 19
      7x <20k, 20x <50k, 24x <100k
      p+n FEE64s 1.8.W spectra 20us FSR - OK - attachment 20

      good event statistics - OK - see attachment 21
      7x <20k, 22x <50k, 24x <100k
      p+n FEE64s 1.8.W spectra 20us FSR - OK - attachment 22

17.50 detector biases & leakage currents OK - see attachments 23 & 24

      FEE64 temperatures OK - see attachment 25

      good event statistics - OK - see attachments 26
      9x <20k, 21x < 50k, 24x <100k cf. 10x <20k, 19x <50k, 20x <100k earlier today

      p+n FEE64s 1.8.W spectra 20us FSR - DSSSD#1 noisy - attachment 7
      n+n FEE64s 1.8.W spectra 20us FSR - DSSSD#1 noisy - attachment 8

17.57 all histograms zero'd
      DAQ stats zero'd