ELOG AIDA

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

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Entry time:

Wed Nov 9 11:07:14 2016

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DAQ start (R22) failed - merger remained in 'want first sync' state, no output to TapeServer -> soft reset OK

start 20.07
stop
AIDA filename R23
BRIKEN filename 161109_12012_767778Ni_23
BigRIPS filename 
ASIC settings 2016Nov07_23.03.06
DSSSD bias & leakage currents OK see attachments 1 & 2
Degrader 5.4mm Al from start of run
F11 rate 450Hz
BigRIPS setting 76-78Ni

N.B. there are a number of correlation resets at the start of R23

Offline analysis of R23_2

*** DSSSD # 1 count:       297 old count:       146 dt:      1.03 s  HEC rate:    146.07 Hz
 *** DSSSD # 2 count:       259 old count:       126 dt:      1.03 s  HEC rate:    128.66 Hz
 *** DSSSD # 3 count:       281 old count:       141 dt:      1.03 s  HEC rate:    135.43 Hz
 *** DSSSD # 4 count:       178 old count:        86 dt:      1.03 s  HEC rate:     89.00 Hz
 *** DSSSD # 5 count:        30 old count:        13 dt:      1.03 s  HEC rate:     16.45 Hz
 *** DSSSD # 6 count:         3 old count:         2 dt:      1.03 s  HEC rate:      0.97 Hz

00.04 R23 continuing.
      F5 C wedge in. F7 empty. F11 now empty. All variable degraders in place.
      F11 plastic rate ~400-500Hz.
      Change made around start of R23_70.
      Offline implant rates shown below for R23_72:
      *** DSSSD # 1 count:       562 old count:       414 dt:      1.06 s  HEC rate:    139.98 Hz
      *** DSSSD # 2 count:       507 old count:       372 dt:      1.06 s  HEC rate:    127.68 Hz
      *** DSSSD # 3 count:       552 old count:       404 dt:      1.06 s  HEC rate:    139.98 Hz
      *** DSSSD # 4 count:       350 old count:       262 dt:      1.06 s  HEC rate:     83.23 Hz
      *** DSSSD # 5 count:        46 old count:        37 dt:      1.06 s  HEC rate:      8.51 Hz
      *** DSSSD # 6 count:         4 old count:         3 dt:      1.06 s  HEC rate:      0.95 Hz

00:34 (corresponds to the beginning of R23_77) Remove 1 mm of Al variable degrader at F11 (now total Al is
2.2+2.2 = 4.4 mm)
      *** DSSSD # 1 count:       715 old count:       579 dt:      5.00 s  HEC rate:    142.96 Hz
      *** DSSSD # 2 count:       619 old count:       511 dt:      5.00 s  HEC rate:    123.77 Hz
      *** DSSSD # 3 count:       717 old count:       579 dt:      5.00 s  HEC rate:    143.36 Hz
      *** DSSSD # 4 count:       714 old count:       574 dt:      5.00 s  HEC rate:    142.76 Hz
      *** DSSSD # 5 count:       493 old count:       398 dt:      5.00 s  HEC rate:     98.57 Hz
      *** DSSSD # 6 count:        93 old count:        81 dt:      5.00 s  HEC rate:     18.59 Hz

00:43 R23_80 biases are shown as attachments 3 and 4

01.08 F11 C target installed.
      Corresponds to start of R23_90.
01.09 Final 4.4mm of variable Al degrader removed by start of R23_91.
      Implant rates sensible.

02.12 F5 C target removed. F7 CH2 target put in. F11 C target remains in place.
      Rate reduction during R23_115 as beam components changed.     
      implant rate >0 by start of R23_116 and BRIKEN run 30.
      F11 plastic rate ~500Hz.

3:15 Takechi group changes the condition.  This is beginning R23_132 
      F5 carbon, F7 empty.
      F11 pllastic rate is 450 cps
      F11 carbon remains in.

06.20 R23 stopped in anticipation of LN2 fill cycle.
      Takechi group changed setting > F5 C out,  F7 CH2 out, FF C in.
      All variable degraders in.
      
06.30 Leakage currents attachments 5+6.

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Attachment 1: