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 Mar 29 12:25:39 2025
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> 00.00 Degrader changed to 4mm + some of variable (need to confirm) > Extra 1mm removed. > > 00.30 R63 > 95Br BigRIPS setting -> 94Se > Degrader ? > > FEE64 nnaida1-16 stat spectra (attachment 1) > > 00.50 Beam tuning for 100Kr started > Degrader changed to 4mm fixed + 0.6mm + 0.2mm variable > => total 4.8mm > > 09.40 Found detector bias DSSSD #1 tripped > Detector trips at +20uA at ~ +10V > > 10.45 R63 stopped > > 10.45 Bias(V) I_L(uA) set 50uA trip current > 10 45.105 > 20 trips at ~15V > 2 4.450 > 4 ~7.4 rising to ~9.4 over ~2 mins > 6 20.4 and rising > > Not open circuit. Not Ohmic. Radiation damage? > > Time between successive 32000 block data files changes from ~5-6 mins to ~3-4 mins > 07.57-08.00. SEASTAR Elog records F/C drops in at 08.20. Nishimura-san reports MAKI > DAQ stopped/stalled c.08.00. Abrupt failure? > > 11.15 R64 > DSSSD #1 off > nnaida6, 10, 11 & 16 slow comparator -> 0xff, medium/low energy selection -> 0x1 > > 12.10 R64 stopped > beam off > > 12.25 R65 > > 14.09 R65 ends > > R66 > New ZDS setting (change in B-rho) > F11 rate ~4kHz > > ~15.00 Degrader changed -> 4mm + 1.3mm (variable) Al > > 16.01 R66 ends > > 17.00 Checked CAEN N1419 ch #1 with/without bias cable and disconnecetd from DSSSD #1 - zero current > at bias => problem forward of adaptor PCB > > 17.28 R68 > 100Kr setting > > While tuning ZDS, observe few, if any, implants in DSSSD #2 & #3 > > 18.30 Degrader changed to 4mm fixed + 0.4mm variable > > 19.16 R68 ends > > R69 > Degrader -> 4mm + 0.4mm (variable) Al
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