ELOG AIDA

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

AIDA

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Entry time:

Sat Nov 26 15:32:38 2016

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00.33 DSSSD bias & leakage currents OK - see attachments 1 & 2
      FEE64 temperatures OK - see attachment 3

00.34 DAQ continues (RIBF03R1/R10)

ASIC settings 2016Nov17-10.50.10
 
      BNC PB-4 pulser
      Amplitude 90,000
      x5 attenuator IN
      frequency 25Hz range
      t_r 50ns, tau_d 50us
      polarity -, tail pulse, delay MIN, INT ref

good events - see attachment 4
      N.B. 5x FEE64s > 100k data items/s - intrinsic/extrinsic noise has changed cf. 0x FEE64s previously

00.50 SyncCheck - see attachment 5
      Two peaks for RIBF-AIDA, one peak for BRIKEN-AIDA => RIBF issue?

Merge statistics - see attachments 6-11

00.56 All system-wide checks OK - except clock status - see attachment 12 
      Note - clock status fails show bit 2 set

01.02 Visual scaler - see attachment 13

03.00 Beam stopped temporarily.
      File R10_142 @ ~ 1.5Gb.
      Beam returned ~03.06. Near end of file R10_147.

05.57 Bias and leakage currents ok (attachments 14+15).

06.25 R10 (@R10_211) stopped in anticipation of LN2 fill.

07.11 Successfully restarted DAQ after LN2 fill.
      Started run R11.

07.18 Beam stopped to change stripper foil.
      End of R11_1.
      DAQ also stopped as I typed this.

07.53 Beam returned.
      
08.01 R12 started on 1GeV setting to look at suspicious data in high LEC/low HEC ranges.
      Will run this for ~30mins.      
      (NB: Threshold of 0x20 was not changed so...)

(DK arrives on shift)

08.21 Data size of R12 very small, but maybe to be expected as the low gain usually contains ~10k counts which
      is now suppressed? 
      Offline analysis show no implants, even in the low gain portion.  Strange!
      Redo this test again later today if possible

08.50 Stop R12
      Change the medium energy back to low energy

08.55 Start R13 with low and high energy modes
      The data stops writing to disk for some reason

09.05 Switch the degrader condition: was degraders 2 & 3, now degraders 1 & 2
      Liu and Alfredo had found one 40Mg event (it seems we have about 1 such event per hour)
      However, it was only implanted into DSSD #1, so we want to implant 40Mg deeper (N=1 statistics, woohoo)
      So now, 0.5 mm W (+1 mm Al) and 0.3 mm W (+1 mm Al)

09.14 Run takes a moment to begin (data transfer links on FEE 3 and 4 dropped out briefly).  R14 now.

09.39 Data writing stopped. We re-sequence the merger (toggle data transfer on all FEE64s), and start run R15.

09.43 R15 stops writing to disc. All system checks still passed, but not writing.
      Restart merger but lose contact with nnaida14.
09.50 Power cycle FEEs.

10.20 Start run R16 -- garbage
      nnaida13 refuses to calibrate ADCs
      Maybe miscommunication with BRIKEN team?
      When we restart, they need to reload parameters, and then they cannot see our sync (or we are actually not
sending it?)

10.25 Start run R17
      Still the time stamp from AIDA is not visible on the sync check?
      One of the Check ASIC Control tests returned something other than OK
          (sorry, we did not copy it)
          But trying it again (w/o other changes), then it returned the default OK values.
      BRIKEN is not synced with BigRIPS?  They don't know if it gets syncs from AIDA or not
      All AIDA sync checks appear as normal, however

10.36 BRIKEN and AIDA seem to now be synchronized (we did nothing on the AIDA side)
      It is unclear if we are sync'd with BigRIPS.
      Stop this run to get aligned with BRIKEN

10.41 Start R18.  Checks on ASICs and SYNC come back good.
      Degrader settings (not changed): 3 mm Pb,; 0.5 mm W (+1 mm Al); 0.3 mm W (+1 mm Al)
      F11 plastic rate 8 cps
      BigRIPS run 1026; started 10:27

(CG leaves shift)

(TD arrives)

12.28: BigRIPS run number 1028

12.58 Checking the synchronization, and it is not correct.
      R18_28: BRIKEN issues a new synchronization signal

13.25 Merger stops

Merger error messages for Q 23 (nnaida24) - see attachment 16
      nnaida24 reboots c. 13:31 - see attachment 17

Request DAQ STOP, restart Merger
      DAQ stops OK
      Request DAQ RESET & SETUP
      R19 started for AIDA, but we never get the full data links (junk)

13.54 nnaida15 did not show data transfer -> merger restarted
      Now R20_0, DAQs look good, BRIKEN issued resync
      BigRIPS run 1028 still

14.00 SyncCheck see attachment 18
      good events statistics - see attachment 19 - rates lower than observed yesterday, not clear why

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