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 Mar 29 12:26:36 2025
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> 00.51 BigRIPS data file 1112. > > 01.50 BigRIPS data file 1113. > > 02.55 BigRIPS data file 1114. > > 03.56 BigRIPS data file 1115. > > 04.58 BigRIPS data file 1116. > > 05.57 BigRIPS data file 1117. > > 06.26 Stopped run R41 @R41_126 ahead of LN2 fill. > Bias and leakage currents ok (attachments 1+2). > BRIKEN files 161130_1942_183.dlt to 161130_1942_197.dlt > > 06.54 BigRIPS data file 1118. > > (DK arrives) > > 07.44 R42 started following LN2 fill. (BRIKEN computer had some problems, delaying restart.) > No synchronisation with BRIKEN during R42_0. > Re-sync pulse issued and synchronisation obtained 1.2GB into R42_0. > > 7.55 Big RIPS run 1119 > > (CG departs) > > 8.55 Big RIPS run 1120: corresponds roughly to AIDA R42_15 > > circa 9.00: Offline analysis of present condition: https://elog.ph.ed.ac.uk/AIDA/509 > > 09.55 BigRIPS data file 1121 > > 10.00 Beam is stopped for changing stripper foil. Nearly at the end of R42_27. > Previously there was 8. + 0.2 mm of Al on the upstream side of the PE wall > Pb bricks between MUSIC 1 and MUSIC 2 had the width reduced from 7.5 cm by ~1 cm compression on the beam > right side > So the total gap in this location should be > Now we have 5 mm Al between MUSIC 1 and MUSIC 2. > 3. mm and 0.2 mm Al is on the upstream side of PE wall. > (Total thickness of Al degraders is not changed, only the distribution of the material around F11.) > (Variable degraders are not moved: 0.5 mm W + 0.3 mm W + 1.0 mm W (+3 mm Al backing)) > > 10.08 BigRIPS data file 1122 > 10.09 Beam returns: 1.3 GB into R42_29 > > circa 12:00: offline analysis of present condition: https://elog.ph.ed.ac.uk/AIDA/510 > > 11.09 BigRIPS data file 1123 > > (TD arrives, DK to lunch) > > 12.09 BigRIPS data file 1124 > > 12.42 DAQ stops (RIBF03R1/R42_68) - overloaded /data10 filesystem sshd/rsync + rm > Unable to soft reset, power cycle FEE64s > > 13.11 DAQ starts (RIBF03R1/R43) > ASIC settings 2016Nov29-21.38.02 > > 13.18 BRIKEN issues multiple syncs - attempting to reset correlation scalers > > 13.21 BigRIPS data file 1125 > > 13.25 Correlation scalers now reset, SyncCheck OK > AIDA data file R43_2 > BRIKEN data file 205 > BigRIPS 1125 (circa 13.21) > 15 cps at BigRIPS scaler F11 plastic; network camera for ZDS scaler has 55 cps > > (DK return, TD to lunch and PAC) > > 15.26 BigRIPS setting changes from 40Mg setting to unreacted 41Al setting. > About half way in AIDA R43_27 > BigRIPS #1127 > F11 plastic at BigRIPS scaler is about 30 cps (doubled from before) > Brho settings: > D6 7.3989 Tm > D7 6.2253 Tm > D8 6.2405 Tm > > 16.25 Operator calls. The beam is stopped. They don't specify for how long and we don't know the exact > technical reason without native Japanese speaker > Phone rang in the beginning near AIDA R43_41 > > 16.33 They put back the disable access radiation control...beam returns soon? > > 16.43 R43_47 run in AIDA, beam comes back. > F11 scint scaler of BigRIPS shows around 30 cps as before. (network camera scaler from ZDS shows about 80 > cps) > BigRIPS data file 1128 > > 16.58 Naive estimation of the energy loss difference of 40Mg and 41Al from different optics settings > Use D8 Brho of 6.3208 Tm of R21_0 > 40Mg energy after 8mm Al: 125 MeV/u > 41Al " " " ": 140 MeV/u > Use D8 Brho of 6.2405 Tm as above for the present settings > 40Mg energy after 7 mm Al: 125 MeV/u > 41Al energy after 6.5 mm Al: 142 MeV/u > So, neglecting other stopping materials, the difference between implantation depths could be about 1 or 2 > SSD layers towards the front of AIDA. > > 17.08 R43_53 removed variable degrader #1 (0.5 mm W [+1 mm Al]) > Variable degrader setting is now #2 + #3: 0.3 mm W + 1.0 mm W [+2 mm Al] > > 17.14 SyncCheck OK > BRIKEN data file 210 > AIDA data file R43_55 > > 17.28 DSSSD bias & leakage currents OK - see attachments 3 & 4 > FEE64 temperatures OK - see attachment 5 > Visual scalers - see attachment 6 > good events statistics - see attachment 7 > System wide checks OK except nnaida13 fails ADC calibration and variable number of nnaida5, 7, 8, 15 & 16 > fail clock status - bit 2 always set > > 17.49 BigRIPS data file 1129 > Centre ZDS @ 40Mg > Change degrader to (8mm Al) fixed + (0.3mm W/1mm Al + 0.5mm W/1mm Al, 1mm W/1mm Al) variable > > 17.53 SyncCheck OK > AIDA data file R43_64 > BRIKEN data file 211 > > 18.24 DAQ stops OK (RINF03R1/R43_71) > Ready for LN2 refill sequence > > 18.56 BigRIPS data file 1130 > > 19.32 DAQ starts (RIBF03R1/R44) > > 19.35 SyncCheck OK > BRIKEN data file 213 > AIDA data file R44_1 > ASIC settings 2016Nov29-21.38.02 > Degrader (8mm Al) fixed + (0.3mm W/1mm Al + 0.5mm W/1mm Al + 1mm W/1mm Al) variable > > 19.57 BigRIPS data file 1131 > > 20.54 beam off for stripper foil change > > 21.04 1.8.W spectra -see attachments 8 & 9 > good events stats - see attachment 10 > Varying levels of 100kHz period extrinsic noise for FEE64s nnaida17, 18, 19 & 23 > > 21.06 Back back > SyncCheck OK > BigRIPS data file 1132 > AIDA data file R44_31 > BRIKEN data file 214 > > 21.55 SyncCheck OK > > 22.05 BigRIPS data file 1133 > > 22.15 System-wide checks OK except nnaida13 fails ADC calibration and variable # of nnaida5, 7, 8, 15 & 16 fail > clock status - status bit 2 always set > > 23.04 BigRIPS data file 1134 Encoding: HTML ELCode plain Suppress Email notification

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