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 12:26:49 2025
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> 01.28 Beam stopped temporarily. > ~750MB into R26_38. > Bias and leakage currents ok, as are FEE temps (attachments 1-3). > Removed 1mm fixed Al degrader from in front of PE wall. > > Now have 3mm PB downstream of 2nd MUSIC + 1.3mm W and 2mm Al. > > 01.35 Beam returned. > ~1/2 way through R26_39. > > 06.27 LN2 fill. > Run R26 stopped successfully @ R26_97. > > 07.41 After a couple of failed attempts, R27 successfully started. > > 07.44 Resync pulse sent from BRIKEN as nothing is seen on sync monitor. > > 07.58 Bias and leakage currents ok (attachments 4+5). > > 09.00 Beam stopped for stripper foil change. > 1.4GB into R27_15. > Will continue with R27. > > 9.13 Changed degraders and shields in F11 > Pb bricks between MUSIC 1 and MUSIC 2 were not changed, but we confirmed their positions and size of the > window. > Width of window is 7.5 cm, height of window is larger than the MUSIC windows, depth of Pb to beam is 10 cm > New Pb bricks placed downstream of the variable degrader > Width of window is ~12 cm, height of window is larger than the MUSIC windows, depth of Pb to beam is 20 cm > 3 mm Pb degrader was moved from the front of the PE wall to the front of the upstream Pb shield > (between MUSIC 1 and 2 as described above) > > 9.15 BigRIPS run 1049 > > AIDA runs R27_15 (end portion) and all of _16, and the start of R27_17 include beam-off time. > > The start of R27_18 should coincide nearly with beam on. > > 10.00 System-wide checks OK except clock status errors from amongst nnaida5, 7, 8, 15 & 16 - bit 2 always set > and ADC calibration fail for nnaida13 > > 10.50 BigRIPS run 1050 begins > > 11.02 We checked the timestamping, and it looks like BRIKEN and AIDA are not synchronized. So we will restart runs. > > 11.08 R28_00 at AIDA started > > 11.12 All syncs look good now. > > 11.16 BigRIPS data file 1051 > > 12.08 Visual scalers - see attachment 6 > > 12.12 SyncCheck OK - see attachment 7 > > 12.22 BigRIPS data file 1052 > > 14.19 Sync of AIDA shows two peaks with both BRIKEN and BigRIPS, so we stop the run. > BigRIPS should be starting a new run soon, so we will wait for them to start the new run > > 14.31 New AIDA run R29_0; started directly after BigRIPS 1054 (14.29 start) > > 16.00 Offline analysis of R27_1 and R28_14 was done with MIDAS. See their respective eLog entries > The main difference between these runs is R27 has the 3 mm Pb closer to AIDA than R28 > The number of implants to AIDA seems about a factor 2 higher with the 3 mm Pb closer to AIDA > During the next chance to enter F11, we should shift the 3 mm Pb closer to AIDA again, all other things being > equal (BRIKEN impact?!) > > 18.22 Stop the run (R29_47) in preparation for LN2 fill. > > 19.30 Ambient temperature +25.7 deg C, dp.p. +0.2 deg C, RH 18.4% > DSSSD bias & leakage currents OK - see attachments 8 & 9 > > 19.35 Beam is stopped to exchange strippers. Main exp. team also enters the radiation area for ~20 min > Remove the 3mm Pb degrader (it was on the upstream side of the Pb shield between MUSIC 1 and MUSIC 2) > Add 8 mm Al to the front of the PE wall. This should be an equivalent dE for 40Mg we calculated. > > 19.59 DAQ starts (RIBF03R1/R30) > > 20.05 SyncCheck OK > > 20.06 Beam back (R30_1) > BigRIPS data file 1060 > Degrader ( 8mm Al ) fixed + ( 0.3mm W/1mm Al + 1.0mm W/1mm Al ) variable > Encoding: HTML ELCode plain Suppress Email notification

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ELOG V3.1.4-unknown