 Sat Mar 28 04:50:34 2020, Ragan, Detectors, MWPC 
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Alex and Pierre-Michel applied 1500 V to the anode and adjusted the threshold in Messhute.
x1 signal was small & noisy and rest of the signals were fine. |
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Sat Mar 28 11:00:14 2020, Ragan, RuiJiu, Mei, Yuri, Tino, Detectors, Movement of detector
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10:51 am the CsISiPHOS is moved to 65 mm from 60 mm.The spot on the DSSSD is changed by 5 mm which confirms the hit of the beam.
11:05
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Sun Mar 29 09:57:26 2020, ruijiu, Detectors, the HV of charged particle detector
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MHV1 MHV2
ch1:1st Sipad 4th
Sipad
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Mon Mar 30 13:40:57 2020, ruijiu, Detectors, HV of Inner detector
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Mon Mar 30 13:41:20 2020, ruijiu, Detectors, HV of Inner detector
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Mon Mar 30 14:48:02 2020, ruijiu and Tino, Detectors, The leakcurrent of SiPad is over the setting limit.
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Because the
leakcurrent of
6 Sipads is
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Mon Mar 30 15:03:58 2020, ruijiu Tino, Yuri, Lasoro, Nik and Uli, Detectors, the gas bottle is empty.
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The gas bottle was empty. Tino replaced
the previous old bottle with 50 bar gas left.
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Mon Mar 30 16:25:05 2020, ruijiu, Detectors, turn down the HV
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turn down the hv and pull out the detector.
suggest by
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Mon Mar 30 20:51:06 2020, Ragan, Detectors, Bias Voltage for Si-pads
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The limit of the leakage current for all Si pads was increased from 1500 nA to 5000nA and
leakage current was recorded for different Bias Voltages (32V, 35V, 40V, 45V, 50V, 55V
and 60V).
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Wed Apr 1 01:02:24 2020, ruijiu, Detectors, the detector cable is disconnected.
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Wed Apr 1 01:05:36 2020, ruijiu, Detectors, detector position fixed at 60 mm
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| The detector cable was disconnected . We entered and reconnected the cable. |
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Thu Nov 19 09:14:40 2020, Jan, Detectors, remote MSCF settings for CsISiPHOS
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Attached is a list of all set values for the 5 MSCF shaper modules.
This was done prior to run0251, which served as a final benchmark for those settings.
See: https://elog.gsi.de/esr/E121/62
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Tue Dec 8 15:47:07 2020, Jan, Detectors, manual preamp & shaper settings for CsISiPhos
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attached is a document showing fotos of all involved amplifiers in the chain to document the manual settings active during the experiment.
Summary:
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Wed Jan 29 10:42:42 2020, Shahab, General, Gas target control with the new control system event
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Many thanks to Sergey and Nikos we have tested the connection of the new control system for turning on and off of the gas target.
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Fri Feb 21 11:30:52 2020, Laszlo, General, Shift plan
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e127: https://docs.google.com/spreadsheets/d/14m8WcCq1erx6HqWJRK7TLbCx121IkjqGa5l-frf4YjI/edit#gid=0
e121: https://docs.google.com/spreadsheets/d/10MUzA5-Ilf2WzCyNj8u_KSG6yzPg0e4vtZGGPFB3K-k/edit#gid=0 |
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Thu Mar 26 17:21:40 2020, Ragan, General, Stochastic cooling
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1) From SIS, 206Pb67+ @401.17 MeV/u goes to FRS where only SEETRAM is placed in the target area to strip off 206Pb67+ to get 206Pb81+.
2) There is 206Pb81+ (H-like primary beam) inside ESR at 400 MeV/u.
3) The ESR team is now trying Stochastic cooling with 206Pb81+ beam at 400 MeV/u. |
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Fri Mar 27 13:02:07 2020, Ragan, General, Stochastic cooling
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1) ESR team is successful with the Stochstic cooling of primary H-like 206Pb81+ beam @400 MeV/u.
2) Now, they are trying for stacking of the beam. |
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Fri Mar 27 13:04:17 2020, Ragan, General, FRS Settings until now
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Yuri and Helmut have been extensively involved in tuning and optimizing of the FRS.
26th March, 2020 (Evening setting):
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Fri Mar 27 13:40:54 2020, Ragan, General, NTCap start and shutdown information
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| The attachment contains information on how to start and shutdown NTCap and bridge computer. |
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Fri Mar 27 19:51:37 2020, Ragan, General, ESR Machine
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By changing the tune to Qx=2.33, Qy=2.36 the momentum acceptance was significantly improved. A variation of the cooler voltage of 10300 V was possible without
beam loss. That corresponds to a momentum acceptance of 2.7 %. That should provide good conditions for longitudinal stacking.
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