HOME ESR EXPERIMENTS LABS etc

E121 E127 E132 E125 E143 laser_cooling_2021 E142 Ê128 E146 E0052 E0018

Bound beta decay experiment on Tl-205, all entries  Not logged in

Find |  Login |  Help

Full | Summary | Threaded | Collapse | Expand     -- All entries -- Last day Last 3 Days Last week Last month Last 3 Months Last 6 Months Last Year -- Category -- Analysis Calibration DAQ General Collaboration Runs Detectors SlowControl  180 Entries

Goto page 1, 2, 3 ... 7, 8, 9

Thu Sep 13 11:32:17 2018, Jan Glorius, Collaboration, Proposal  Attached is the beam time proposal submitted and accepted by the G-PAC in 2017.   Mon Dec 3 15:06:04 2018, Chen, Sidhu, DAQ, Test of two preamplifier.  [B]Description:[/B]    We have two pre-amplifiers:    New: Max. range 5GeV, Two sensitivity options: 1 GeV and 5 GeV,  Decay time = 30 us, pulse input 220 MeV/u, Ser. #MPR-32-D-5000-30-1118380.   Wed Dec 5 17:29:24 2018, Chen, Sidhu, Detectors, signal map 13x [B]Description:[/B]   Here is a summary of signal map. The charged particle detector includes 6 layers of Si-Pad, 1 DSSD and 1 CsI.    Fri Dec 7 10:56:04 2018, Jan Glorius, SlowControl, EPICS ioc on raspberry  We have an EPCIS server (ioc) running on our raspberry (ext-027377). It talks to our MesyTec modules (MSCF shapers, MHV4 high-voltages). In principal it should be running all the time, but here is the manual how to check/start it:   Fri Dec 7 11:39:41 2018, Jan Glorius, SlowControl, GUI for remote control of MSCF+MHV4  We have a GUI for remote controlling our MesyTec modules MSCF16 and MHV4 for E121 experiment. Here is the instructions to run it:   Mon Dec 10 11:59:15 2018, Chen, Sidhu, Detectors, Test of shaping amplifier.  [IMG]elog:6/1[/IMG] [IMG]elog:6/2[/IMG]   Tue Mar 12 12:54:58 2019, Chen, Sidhu, DAQ, how to start DAQ and plot histogram.  [B]1. login litv-exp account[/B] rchen@lxg1254:/data.local2/2002_238UIMS$ ssh -X litv-exp@lxg0155.gsi.de (don't login on lx-pool.)   Tue May 7 15:52:47 2019, Chen, Sidhu, SlowControl, GUI for remote control of MSCF+MHV4 [detailed]  We have a GUI for remote controlling our MesyTec modules MSCF16 and MHV4 for E121 experiment. Here is the instructions to run it:   Tue May 28 08:36:14 2019, Jan, DAQ, MBS start & RFIO server  You need a DAQ-PC and the RIO crate computer. All of the DAQ proceedures laid out here are operated from inside the DAQ screen session. Right now for e121 the following DAQ-setup is used: (might change in the future)   Wed Jun 26 16:20:31 2019, Jan, DAQ, unpacker: lmd > root  I have written an unpacker for the lmd data taken with the current daq-system for E121. The crate configuration is as follows: ADC1 channels 1-32 (Caen 785)   Tue Aug 27 14:53:47 2019, Chen, Sidhu, Detectors, The thickness uncertainty of Ta is less than 1%.   The thickness of Ta plate have been measured by target group. The result is show as following. According to this measurement, the thickness uncertainty is less than 1%.  This thickness uncertainty is good enough for Tl experiment.    Thu Oct 24 15:36:13 2019, Chen, Sidhu, Detectors, Detector installation process  [IMG]elog:12/1[/IMG] [IMG]elog:12/2[/IMG] [IMG]elog:12/3[/IMG]   Wed Jan 29 10:42:42 2020, Shahab, General, Gas target control with the new control system event  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.   Fri Feb 21 11:30:52 2020, Laszlo, General, Shift plan  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   Tue Feb 25 15:48:31 2020, ruijiu chen, DAQ, Important folders of e121 eperiments:  1. slow control: 1.1. program file: litv-exp@ringpi:~/epics/mrcc_ioc/db $    Tue Feb 25 15:49:58 2020, ruijiu chen, DAQ, changing scaling factor.  How to change scaling factor? The parameters is in f_user.c file: 1. open the f_user.C with emacs :   Thu Feb 27 14:04:12 2020, Ruijiu Chen, Detectors, Remote control of HV module  Be careful. The voltage value on user interface is 10 times of real value. e.g. if the real value is 32V, the voltage value on UI has to be 320V.  [IMG]elog:17/1[/IMG]   Thu Mar 26 17:21:40 2020, Ragan, General, Stochastic cooling  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.   Fri Mar 27 13:02:07 2020, Ragan, General, Stochastic cooling  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.   Fri Mar 27 13:04:17 2020, Ragan, General, FRS Settings until now  Yuri and Helmut have been extensively involved in tuning and optimizing of the FRS. 26th March, 2020 (Evening setting):   Fri Mar 27 13:40:54 2020, Ragan, General, NTCap start and shutdown information  The attachment contains information on how to start and shutdown NTCap and bridge computer.   Fri Mar 27 19:51:37 2020, Ragan, General, ESR Machine  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.   Fri Mar 27 19:59:09 2020, Ragan, General, Beam stacking in ESR is achieved  Thanks to Sergey and Markus, stacking of primary H-like 206Pb81+ beam in ESR is achieved. The stacking of the primary beam was established. There is continuous cooling on the injection orbit by stochastic cooling and by electron cooling on the   Fri Mar 27 20:05:43 2020, Ragan, General, H2 gas jet ready  Thanks to Nikos, stable H2 gas jet target with 10^14 particles/cm^3 is ready. (More information can be found on: https://ulpc24.gsi.de/cgi-bin/jet.py?gasart=Helium )   Fri Mar 27 20:52:31 2020, Ragan, General, Plans for the measurement with 206Pb81+  We plan to measure: 1. Lifetime of H-like 206Pb81+ beam with two electron cooler currents:   Sat Mar 28 01:14:19 2020, Ragan, General, Cross-section for capture and ionisation of 206Pb81+ with H2 target   Cross-section for capture and ionisation of 206Pb81+ with H2 gas jet target are calculated using GLOBAL code. The ionisation (on CsISiPHOS) and capture (on MWPC) trigger rates are calculated for 206Pb81+ beam with 10^6 particles revolving in ESR ~2 MHz frequency with H2 gas jet target density ~ 10^14 particles/cm3.   Sat Mar 28 04:32:15 2020, Ragan, Detectors, Ionisation events on DSSSD  XY co-relation of DSSSD showing 206Pb82+ beam hitting the CsISiPHOS detector present in the inner pocket of ESR after the first dipole after the gas jet. 206Pb82+ is  produced by ionisation of    Sat Mar 28 04:50:34 2020, Ragan, Detectors, MWPC  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.   Sat Mar 28 11:00:14 2020, Ragan, RuiJiu, Mei, Yuri, Tino, Detectors, Movement of detector  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    Sat Mar 28 11:07:49 2020, Ragan, RuiJiu, Tino, , General, Nikos is changing gas jet target  The gas jet target is now being changed from H2 to Ar by Nikos.   Sat Mar 28 11:20:10 2020, Ragan, RuiJiu, Mei, Yuri, Tino, General, Reducing beam intensity in ESR  Yuri reduces beam intensity in the ESR to reduce the countrate on the detectors.   Sat Mar 28 11:28:11 2020, Ragan, RuiJiu, Mei, Yuri, Tino, General, ESR open  ESR is open now   Sat Mar 28 12:19:21 2020, Ragan, RuiJiu, DAQ, Change of the polarity of Amplifiers  Since last night, the signals from the p-side of all the Si pads were seen as negative on picoscope. The signals from DSSSD, all n-sides of Si pads and CsI were positive which all are in MSCF-5. Thus, I and RuiJiu, changed the polarity jumpers of MSCF 1,2,3 and 4(all the four jumpers inside the mentioned MSCF) and now hope to see positive signals   Sat Mar 28 13:09:11 2020, Mei,Yury, Tino, Ragan, Ruijiu, General, Shift plan  From Yury, For now, measure the beam life time with 3 different electron current in the e-cooler,i.e. 200mA(default), 10mA, and 20mA. For each current, 4 sets of   Sat Mar 28 13:19:56 2020, Ragan, Runs, Template  beam:  energy:  storage time:   Sat Mar 28 14:19:24 2020, Ragan, RuiJiu, Mei, Yuri, General, Instructions to change the electron cooler current  Attached are the instructions on how to change the electron cooler current for the lifetime measurements of 206Pb81+ beam (interaction with residual gas and electron cooler).   Sat Mar 28 15:07:40 2020, ruijiu, DAQ, start run       Sat Mar 28 15:19:23 2020, ruijiu, , start run e121_run_0236.lmd  store 206Pb81+ beam inside ESR and measure its halflife.  The HV of detector is off. Start DAQ to record the ESR current in lmd file.   Sat Mar 28 15:23:05 2020, Alex, Ragan, Mei Bai , General, beam lifetime measurement  We see two species in the Schottky spectra during the beam lifetime measurement without the target. The one (probably the primiary beam) is significantly better cooled than the other. So, we were wondering what is the other beam? Maybe the recombined ones?   Sat Mar 28 16:09:50 2020, Alex, General, no beam in the ESR  Ragan and Ruijiu went in the ESR for short time to fix something with the slow control of the silicon detector. After this, there is no beam in the ESR.   Sat Mar 28 16:12:25 2020, ruijiu, ragan, DAQ, enter ESR and turn on the HV crate.      Sat Mar 28 16:29:27 2020, Ragan, RuiJiu, Esther, General, Malfunction of several ESR machines  The HKR crew informs us that several machines in ESR are showing malfunctions. The on-call expert cannot be reached.   Sat Mar 28 18:11:13 2020, Alex, Yuri, General, no beam in the ESR  Yuri and Sergey (on phone) have investigated extensively the problem with having no beam in the ESR. The FRS has been checked and seems OK. The ESR is fine as well. The problem seems to be the timing. Ths SIS and the ESR seem to be completely out of synchronization. The on-call service for the control system has been   Sun Mar 29 09:40:35 2020, ruijiu, DAQ, restart go4  go4 crush up.  the problem is  due to  mbs.    Sun Mar 29 09:57:26 2020, ruijiu, Detectors, the HV of charged particle detector          MHV1     MHV2 ch1:1st Sipad  4th  Sipad   Sun Mar 29 10:09:14 2020, ruijiu, , start run e121_run_0237.lmd  Sergey and Yuri are tuning Tl beam. The particle number in ers is about 1e4. I(SIS)=5e8 run stop: after few minutes (garbage data)   Sun Mar 29 11:12:00 2020, Ragan, Runs, start run e121_run_0239.lmd   Sergey and Yuri are tuning Tl beam. The particle number in ers is about 1e4. I(SIS)=5e8 some events on MWPC can be seen !   Sun Mar 29 12:56:02 2020, Ragan, RuiJiu, General, Good positive signals from MSCF  As we (RuiJiu and me) changed the jumpers of MSCF 1, 2,3 and 4 yesterday, now we see nice positive signals on picoscope. Yuri and Sergey are still working on optimising the Tl fragments !   Sun Mar 29 13:04:32 2020, Ragan, RuiJiu, Runs, run file: 1298  The Tl fragments are being stacked (almost ~20 staacks) and tried to store nicely in ESR. The plan is to see the number of contaminants on the inner detector (CsISiPHOS) after the gas jet is on (Ar gas jet) and minimise this number for different FRS settings !!   Sun Mar 29 13:05:36 2020, ruijiu, DAQ, start ntcap  IQ_2020-03-29_13-05- 56 SC_2020-03-29_13-05-   Sun Mar 29 13:43:46 2020, , ,       Sun Mar 29 14:01:45 2020, ruijiu, , beam position on DSSD  move the detector 1cm  outside.from 60mm to  70mm.   Sun Mar 29 14:29:13 2020, ruijiu, , e121_run_00240.lmd  s6 positon at 50mm.   Sun Mar 29 18:41:31 2020, ruijiu, Analysis, Ratio between MPWC rate and DSSD rate  slit Ratio error -1 18.64 0.4 -2 18.18 0.38   Sun Mar 29 18:55:19 2020, Shahab, Runs, Frequency list for identification  Here are some frequencies for identification of the fragments. Center freq: 243.352675   Sun Mar 29 20:32:20 2020, Ragan, General, Template for Pb halflive measurement  beam:  energy:    Sun Mar 29 21:02:43 2020, ruijiu, Analysis, decay line of 205Tl beam  decay line of 205Tl beam with Ar gas jet target on and S6 slit at -8mm Ar gas density~1e12 atoms/cm2   Sun Mar 29 21:34:46 2020, Ragan, Runs, First run  beam: 206Pb81+ energy: 400 MeV/u   Sun Mar 29 21:39:27 2020, ruijiu, Analysis, Ionization cross section and capture cross section for h-206Pb + Ar  Ionization cross section = 1320 barn. Capture cross section = 557+137+44.5=735.5. sigma_Ion/sigma_cap=1.79   Sun Mar 29 21:55:47 2020, Ragan, General, MWPC  Alex goes to Messhute to check the signals from MPWC. After he completes, we start with the measurements with the primary beam )   Sun Mar 29 23:48:12 2020, Jan, Analysis, run0251: E_spectra for CsISiPhos  14x This is a collection of energy spectra of the CsISiPhos detectors from run0251 with primary beam. There is no good spectra for n-side of Si-pad 1!   Mon Mar 30 00:32:32 2020, Ragan, Runs, First measurement with 206Pb81+ beam  beam: 206Pb81+ energy: 400 MeV/u   Mon Mar 30 01:01:53 2020, Ragan, Runs, First measurement with 206Pb81+ beam  beam: 206Pb81+ energy: 400 MeV/u   Mon Mar 30 01:07:29 2020, Ragan, General, Problem with SIS runstop: 0256  There is problem with SIS Run stop: 0257.lmd (at1:06)   Mon Mar 30 01:25:57 2020, Ragan, Runs, First measurement with 206Pb81+ beam  01:17 Problem with SIS is solved 01:19 run start 0258.lmd   Mon Mar 30 01:43:58 2020, Ragan, General, First measurement with 206Pb81+ beam pattern details  The following shows the pattern for first measurement in ESR (gas jet is on for = 60*5 secs = 300 secs as it can be seen on step SC7 in pattern). One injection cycle runs for ~ 6 mins.   Mon Mar 30 02:00:46 2020, Ragan, Runs, First measurement with 206Pb81+ beam  beam: 206Pb81+ energy: 400 MeV/u   Mon Mar 30 02:27:44 2020, Ragan, Runs, Second measurement with 206Pb81+ beam at I_cooler = 200 mA   I_cooler = 200 mA beam: 206Pb81+   Mon Mar 30 02:58:51 2020, Sergiy, Dima, Runs, Second measurement with 206Pb81+ beam at I_cooler = 200 mA   I_cooler = 200 mA beam: 206Pb81+   Mon Mar 30 03:30:03 2020, Sergiy, Dima, Runs, Second measurement with 206Pb81+ beam at I_cooler = 200 mA   I_cooler = 200 mA beam: 206Pb81+   Mon Mar 30 04:00:19 2020, Sergiy, Dima, Runs, Second measurement with 206Pb81+ beam at I_cooler = 200 mA   I_cooler = 200 mA beam: 206Pb81+   Mon Mar 30 04:15:29 2020, Ragan, General, Second measurement with 206Pb81+ beam at I_cooler = 200 mA  In the picture below, a very nice storage of 206Pb81+ at 200 mA electron cooler current for no gas jet target can be seen in ESR. The measurement started at 02:24 and we will now finish it in 5-10 mins. We will now do two more measurements for I_cooler = 10 mA ans 20 mA.   Mon Mar 30 04:30:17 2020, Sergiy, Dima, Runs, Second measurement with 206Pb81+ beam at I_cooler = 200 mA   I_cooler = 200 mA beam: 206Pb81+   Mon Mar 30 06:15:13 2020, Ragan, Runs, Second measurement with 206Pb81+ beam at I_cooler = 20 mA   I_cooler = 20 mA beam: 206Pb81+   Mon Mar 30 06:30:52 2020, Ragan, Runs, Second measurement with 206Pb81+ beam at I_cooler = 20 mA   I_cooler = 20 mA beam: 206Pb81+   Mon Mar 30 06:34:47 2020, Ragan, General, Second measurement with 206Pb81+ beam at I_cooler = 20 mA   In the ESR picture below, the decay of beam is very fast initially for few minutes and then the decay is constant. But why does it decay for first few minutes ?   Mon Mar 30 07:02:15 2020, tino, Runs, Second measurement with 206Pb81+ beam at I_cooler = 20 mA   I_cooler = 20 mA beam: 206Pb81+   Mon Mar 30 07:34:06 2020, Tino, Runs, Second measurement with 206Pb81+ beam at I_cooler = 20 mA   I_cooler = 20 mA beam: 206Pb81+   Mon Mar 30 08:00:40 2020, Tino, Runs, Second measurement with 206Pb81+ beam at I_cooler = 20 mA   I_cooler = 20 mA beam: 206Pb81+   Mon Mar 30 08:32:05 2020, Tino, Runs, Second measurement with 206Pb81+ beam at I_cooler = 20 mA   I_cooler = 20 mA beam: 206Pb81+   Mon Mar 30 08:56:04 2020, Tino, Runs, Second measurement with 206Pb81+ beam at I_cooler = 10 mA   I_cooler = 10 mA beam: 206Pb81+   Mon Mar 30 09:26:37 2020, Tino, Runs, Stopped Second measurement with 206Pb81+ beam at I_cooler = 10 mA   Stopped Data recording for Restart of the measurement I_cooler = 10 mA   Mon Mar 30 09:34:02 2020, Tino, Runs, Restart of second measurement with 206Pb81+ beam at I_cooler = 10 mA   Stopped Data recording for Restart of the measurement I_cooler = 10 mA   Mon Mar 30 10:01:31 2020, Tino, Runs, Second measurement with 206Pb81+ beam at I_cooler = 10 mA   I_cooler = 10 mA   Mon Mar 30 10:32:01 2020, Tino, Runs, Second measurement with 206Pb81+ beam at I_cooler = 10 mA   I_cooler = 10 mA   Mon Mar 30 10:57:43 2020, Tino, Runs, Second measurement with 206Pb81+ beam at I_cooler = 10 mA   I_cooler = 10 mA   Mon Mar 30 12:12:25 2020, ruijiu, General, Instruction of NTCAP for shift person  To start a new run with NTCap, we need to retart NTCAP.  1. Stop labview program.  2. Start labview program and start a new run.   Mon Mar 30 12:16:04 2020, Tino, Runs, Second measurement with 206Pb81+ beam at I_cooler = 10 mA   I_cooler = 10 mA   Mon Mar 30 12:33:04 2020, Tino, Runs, Second measurement with 206Pb81+ beam at I_cooler = 10 mA   I_cooler = 10 mA   Mon Mar 30 13:02:49 2020, Tino, Runs, Second measurement with 206Pb81+ beam at I_cooler = 10 mA   I_cooler = 10 mA   Mon Mar 30 13:31:58 2020, Tino, Runs, Second measurement with 206Pb81+ beam at I_cooler = 10 mA   I_cooler = 10 mA   Mon Mar 30 13:40:57 2020, ruijiu, Detectors, HV of Inner detector      Mon Mar 30 13:41:20 2020, ruijiu, Detectors, HV of Inner detector      Mon Mar 30 14:02:41 2020, Tino, Runs, Second measurement with 206Pb81+ beam at I_cooler = 10 mA   I_cooler = 10 mA   Mon Mar 30 14:24:46 2020, ruijiu, DAQ, stop taking data.  1. stop run0272.lmd. 2. stop NTCAP.    NTCAp file:   Mon Mar 30 14:48:02 2020, ruijiu and Tino, Detectors, The leakcurrent of SiPad is over the setting limit.  Because the  leakcurrent of  6 Sipads is    Mon Mar 30 15:03:58 2020, ruijiu Tino, Yuri, Lasoro, Nik and Uli, Detectors, the gas bottle is empty.  The gas bottle was empty. Tino replaced  the previous old bottle with 50 bar gas left.    Mon Mar 30 16:25:05 2020, ruijiu, Detectors, turn down the HV  turn down the hv and pull out the detector.   suggest by    Mon Mar 30 16:37:53 2020, ruijiu, Analysis,       Mon Mar 30 20:51:06 2020, Ragan, Detectors, Bias Voltage for Si-pads  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).   Mon Mar 30 23:30:35 2020, Jan, Analysis, run251 - Si-pad performance & status 7x Attached are plots for Si-pad 2 with hits from ionization of 206Pb81+ at the target. The plots are representative for all Si-pads, the pattern is always the same!   Tue Mar 31 00:47:18 2020, Yuri, Runs, S2 slits 0/+35 mm, target bump +13 mm  Run start: 0276.lmd   Tue Mar 31 15:30:43 2020, ruijiu, Analysis, The beam position on DSSD with different conditions on on the dEE spectrum 6x I analyzed the first measurement with 206Pb81+ beam, run 250-267.    Tue Mar 31 20:32:05 2020, Ragan, General, 203Tl80+ 200Hg79+ 205Tl81+  Below in the schottky spectrum, on left is 203Tl80+ contamination, in middel is 200Hg79+ contamination and on right most is 205Tl81+. These contaminations cannot be seen on CsISiPHOS but can only be seen on schottky. The goal now is to get rid of these contaminations by putting slits.   Tue Mar 31 20:50:05 2020, Ragan, General, 200Hg79+ 205Tl81+  203Tl80+ impurity is removed by moving scrapper inside ESR. Only 220Hg79+ is left now   Tue Mar 31 21:07:05 2020, Ragan, General, Separation of 203Tl80+ and 200Hg79+ using scrapper in ESR  It can be seen in the video how 203Tl80+ (on extreme left) and then 200Hg79+ (in middle originally) is separted from 205Tl81+ by using scrapper in ESR. Now, we want 205Pb81+ mixed with 205Tl81+ to be separated as much as possible in FRS.   Tue Mar 31 23:31:41 2020, Shahab, Runs, alpha_p calibration  Vc = 212849.9349 Ic = 0.2   Wed Apr 1 01:02:24 2020, ruijiu, Detectors, the detector cable is disconnected.      Wed Apr 1 01:05:36 2020, ruijiu, Detectors, detector position fixed at 60 mm  The detector cable was disconnected . We entered and reconnected the cable.   Thu Apr 2 02:36:48 2020, Ragan, General, Stochastic cooling and orbit problem  On 1 April by 5 pm, we could stop the stochastic cooling after the stacking process and also change the orbit of the Tl beam to centre.  Thanks to the efforts by the ESR team !   Thu Apr 2 02:38:32 2020, Ragan, Yuri, Sergey, Esther, Oliver, Runs, First measurement with zero storage time  beam: 205Tl81+ (with no scraping) energy: 400 MeV/u storage time: zero   Thu Apr 2 02:46:57 2020, Ragan, Yuri, Sergey, Esther, Oliver, Runs, Measurement with 2 hrs storage time    Thu Apr 2 05:00:44 2020, Ragan, Esther, Oliver, Runs, Second measurement with 2 hrs storage time  Electron cooler was off here. Thus, this measurement is not what we needed. (in the picture below, it can be seen that the beam is not cooled)   Thu Apr 2 06:25:13 2020, Ragan, Runs, Template  beam: 205Tl81+ (no scraping) energy: 400 MeV/u storage time: ___ hrs   Thu Apr 2 07:01:32 2020, Ragan, Esther, Oliver, Runs, Measurement with 4 hrs storage time  beam: 205Tl81+ (no scraping) energy: 400 MeV/u storage time: 4 hrs   Thu Apr 2 09:21:19 2020, Ruijiu, Runs, 2nd measurement with 2 hrs storage time (repeat)  Because the electron cooler was not switched on during beam accumulation in the previous measurement, we repeat this measurement again. (In the picture below, it can be seen that the beam cooled. On right most is the Tl beam and rest are the contaminants.)   Thu Apr 2 12:52:25 2020, ruijiu, General, setup FRS with 2 g/cm2 degrader.  Yuri sets up FRS with 2 g/cm2 degrader (previous one is 1 g/cm2). The ESR is not changed. The contamination should be less now.   Thu Apr 2 15:24:15 2020, Ragan, General, How to know whether electron cooling is working  For Alle and Kuehler the bottom left status should look like as shown in pictures below.   Thu Apr 2 21:03:40 2020, Ragan, Yuri, Sergey, Nikos, Runs, Zero hour measurement (S2:-10/35 mm)  beam: 205Tl81+ (no scraping, Al ~1g/cm2) energy: 400 MeV/u storage time: zero hrs   Thu Apr 2 21:10:57 2020, Ragan, Yuri, Sergey, Nikos, Runs, One hour measurement (S2:-10/35 mm)  beam: 205Tl81+ (no scraping, Al ~1g/cm2) energy: 400 MeV/u storage time: 1 hrs   Thu Apr 2 21:12:39 2020, Ragan, Nikos, Pierre-Michel, Dima, Runs, Three hour measurement (S2: 0/35 mm)  beam: 205Tl81+ (no scraping , Al ~1g/cm2) energy: 400 MeV/u storage time: 3 hrs   Fri Apr 3 00:39:07 2020, Ragan, Pierre-Michel, Dima, Runs, Half hour measurement (S2: 0/35 mm)  beam: 205Tl81+ (no scraping , Al ~1g/cm2) energy: 400 MeV/u storage time: 0.5 hr   Fri Apr 3 01:22:13 2020, Ragan, Pierre-Michel, Dima, Runs, One hour measurement (S2: 0/35 mm)  beam: 205Tl81+ (no scraping , Al ~1g/cm2) energy: 400 MeV/u storage time: 1 hr   Fri Apr 3 03:18:06 2020, Ragan, Pierre-Michel, Dima, Runs, Zero hour measurement (S2: 0/35 mm)  beam: 205Tl81+ (no scraping , Al ~1g/cm2) energy: 400 MeV/u storage time: 0 hr   Fri Apr 3 03:19:46 2020, Ragan, Pierre-Michel, Dima, Runs, Half hour measurement (S2: 0/35 mm)  beam: 205Tl81+ (no scraping , Al ~1g/cm2) energy: 400 MeV/u storage time: 0.5 hr   Fri Apr 3 03:59:14 2020, Ragan, Pierre-Michel, Dima, Runs, Two hour measurement (S2: 0/35 mm)  beam: 205Tl81+ (no scraping , Al ~1g/cm2) energy: 400 MeV/u storage time: 2 hr   Fri Apr 3 04:36:21 2020, Ragan, Pierre-Michel, Dima, General, Electron cooler problem which was then solved  04:09 Electron cooler had some problem when we were stacking for 2 hours measurement. 04:20 GECEBG2T and GECEBG5T were Reset and then Switched on. Electron cooler started working again   Fri Apr 3 06:35:37 2020, Ragan, Pierre-Michel, Dima, Mei, Shahab, Runs, Half hour measurement (S2: 0/35 mm)  beam: 205Tl81+ (no scraping , Al ~1g/cm2) energy: 400 MeV/u storage time: 0.5 hr   Fri Apr 3 10:06:15 2020, Shahab, Runs, Plots from Scopes  Just two plots from the scopes for documentation: magnets.png:   Fri Apr 3 11:52:27 2020, Shahab, Runs, Stacking 54 times!      Fri Apr 3 11:59:50 2020, Ragan, Pierre-Michel, Dima, Runs, Four hour measurement (S2: 0/35 mm)  beam: 205Tl81+ (no scraping , Al ~1g/cm2) energy: 400 MeV/u storage time: 4 hr   Fri Apr 3 12:02:32 2020, Ragan, Mei, Shahab, Runs, Half hour measurement (S2: 0/35 mm)  beam: 205Tl81+ (no scraping , Al ~1g/cm2) energy: 400 MeV/u storage time: 0.5 hr   Fri Apr 3 13:21:16 2020, Ragan, Mei, Shahab, Runs, Zero hour measurement (S2: 0/35 mm)  beam: 205Tl81+ (no scraping , Al ~1g/cm2) energy: 400 MeV/u storage time: 0 hr   Fri Apr 3 13:39:58 2020, Ragan, Mei, Shahab, Laszlo, Runs, Eight hour measurement (S2: 0/35 mm)  beam: 205Tl81+ (no scraping , Al ~1g/cm2) energy: 400 MeV/u storage time: 8 hr   Fri Apr 3 14:08:41 2020, Shahab, Runs, Stacking      Fri Apr 3 17:55:13 2020, Shahab, Runs, Nice picture from 205-Tl  In this high contrast Schottky recording, the main three frequency peaks are resolved w.r.t. time from left to right: 203 Hg 80 +, 200 Hg 79+ and 205 Tl 81+   Sat Apr 4 00:00:20 2020, Ragan, Laszlo, Pierre-Michel, Dima, Runs, Zero hour measurement (S2: 0/35 mm and S6: -20/7 mm)  beam: 205Tl81+ (no scraping , Al ~1g/cm2) energy: 400 MeV/u storage time: 0 hr   Sat Apr 4 00:11:23 2020, Ragan, Pierre-Michel, Dima, Runs, Half hour measurement (S2: 0/35 mm and S6: -20/7 mm)  beam: 205Tl81+ (no scraping , Al ~1g/cm2) energy: 400 MeV/u storage time: 0.5 hr   Sat Apr 4 00:40:29 2020, Ragan, Pierre-Michel, Dima, Runs, Zero hour measurement (S2: 0/35 mm and S6: -20/7 mm)  beam: 205Tl81+ (no scraping , Al ~1g/cm2) energy: 400 MeV/u storage time: 0 hr   Sat Apr 4 03:06:12 2020, Ragan, General, Instructions if electron cooler goes off during long storage time measurements  Please read the attachment.   Sat Apr 4 03:27:48 2020, Ragan, Pierre-Michel, Dima, Shahab, Runs, Six hour measurement (S2: 0/35 mm and S6: -20/7 mm)  beam: 205Tl81+ (no scraping , Al ~1g/cm2) energy: 400 MeV/u storage time: 6 hr   Sat Apr 4 10:32:16 2020, Ragan, Shahab, Runs, Five hour measurement (S2: 0/35 mm and S6: -20/7 mm)  beam: 205Tl81+ (no scraping , Al ~1g/cm2) energy: 400 MeV/u storage time: 5 hr   Sat Apr 4 13:41:04 2020, Shahab, Runs, cooler down  cooler is down. only one device is off GECEBG2T. updated now it is working.   Sat Apr 4 15:59:16 2020, Ragan, Shahab, Alex, Esther, Runs, 0.5 hour measurement (S2: 0/35 mm and S6: -20/7 mm)  beam: 205Tl81+ (no scraping , Al ~1g/cm2) energy: 400 MeV/u storage time: 0.5 hr   Sat Apr 4 17:32:01 2020, Ragan, Alex, Esther, General, No beam in ESR  The beam is coming from SIS but doesn't arrive in ESR because the quadrupole magnets in ESR have failed. Update (18:01): Problem has been resolved.    Sat Apr 4 18:29:44 2020, Ragan, Alex, Esther, Runs, 0 hour measurement (S2: 0/35 mm and S6: -20/7 mm)  beam: 205Tl81+ (no scraping , Al ~1g/cm2) energy: 400 MeV/u storage time: 0 hr   Sat Apr 4 18:57:49 2020, Ragan, Alex, Esther, General, Timing problem with SIS & ESR and problems with stacking  There are further problems with beam stacking in ESR. It works occasionally but keeps failing. There is also timing problem between SIS and FRS.   Sat Apr 4 19:55:37 2020, Ragan, Alex, Esther, Runs, Failed measurement...Ten hour measurement (S2: 0/35 mm and S6: -20/7 mm)  FAILED - measurement was stopped by sudden loss of the beam  beam: 205Tl81+ (no scraping , Al ~1g/cm2)   Sat Apr 4 22:31:02 2020, Alex, Esther, General, Beam in ESR lost  The beam in ESR was lost suddenly at ~22:20 due to a power supply failure of the quadrupoles. Update (~20:40): Failure was resolved and new stacking started.   Sat Apr 4 23:44:22 2020, Ragan, RuiJiu, Laszlo, Runs, Ten hour measurement (S2: 0/35 mm and S6: -20/7 mm)  beam: 205Tl81+ (no scraping , Al ~1g/cm2) energy: 400 MeV/u storage time: 10 hr   Sun Apr 5 10:21:54 2020, Shahab, Runs, 10 hour measurement pictures  Schottky pictures from the 10 hour measurement gas target, including the time before gas target.   Sun Apr 5 10:31:08 2020, Ragan, Shahab, Runs, Two hour measurement (S2: 0/35 mm and S6: -20/7 mm)  beam: 205Tl81+ (no scraping , Al ~1g/cm2) energy: 400 MeV/u storage time:  hr   Sun Apr 5 12:48:58 2020, Shahab, Runs, 2hour measurement parent pictures 6x     Sun Apr 5 13:05:43 2020, Ragan, Shahab, Runs, Zero measurement (S2: 0/35 mm and S6: -20/7 mm)  beam: 205Tl81+ (no scraping , Al ~1g/cm2) energy: 400 MeV/u storage time: 0 hr   Sun Apr 5 15:28:35 2020, Ragan, Alex, Esther, Runs, Four hour measurement (S2: 0/35 mm and S6: -20/7 mm) 7x beam: 205Tl81+ (no scraping , Al ~1g/cm2) energy: 400 MeV/u storage time: 4 hr   Sun Apr 5 20:23:02 2020, Ragan, Alex, Esther, Runs, Half-hour measurement (S2: 0/35 mm and S6: -20/7 mm) 7x beam: 205Tl81+ (no scraping , Al ~1g/cm2) energy: 400 MeV/u storage time: 0.5 hr   Sun Apr 5 21:50:02 2020, Ragan, Alex, Esther, Runs, Half-hour measurement (S2: 0/35 mm and S6: -20/7 mm) 7x beam: 205Tl81+ (no scraping , Al ~1g/cm2) energy: 400 MeV/u storage time: 0.5 hr   Sun Apr 5 23:28:01 2020, Ragan, Alex, Esther, Runs, One-hour measurement (S2: 0/35 mm and S6: -20/7 mm) 7x beam: 205Tl81+ (no scraping , Al ~1g/cm2) energy: 400 MeV/u storage time: 1 hr   Mon Apr 6 01:02:00 2020, Ragan, Laszlo, Nikos, Runs, Three hour measurement (S2: 0/35 mm and S6: -20/7 mm) 9x beam: 205Tl81+ (no scraping , Al ~1g/cm2) energy: 400 MeV/u storage time: 3 hr   Mon Apr 6 05:28:55 2020, Ragan, Laszlo, Nikos, Runs, Zero hour measurement (S2: 0/35 mm and S6: -20/7 mm)  beam: 205Tl81+ (no scraping , Al ~1g/cm2) energy: 400 MeV/u storage time: 0 hr   Mon Apr 6 05:43:50 2020, Ragan, Laszlo, Nikos, Runs, One and a half hour measurement (S2: 0/35 mm and S6: -20/7 mm)  beam: 205Tl81+ (no scraping , Al ~1g/cm2) energy: 400 MeV/u storage time: 1.5 hr   Mon Apr 6 08:37:02 2020, Ragan, Shahab, Pierre-Michel, Runs, 10 hour measurement (S2: 0/35 mm and S6: -20/7 mm) 8x beam: 205Tl81+ (no scraping , Al ~1g/cm2) energy: 400 MeV/u storage time: 10 hr   Mon Apr 6 09:34:58 2020, Shahab, Runs, Pictures from one and a half hour measurement  cheers!   Mon Apr 6 14:17:54 2020, Yuri, Shahab, Runs, FRS valves  We saw reduction in ESR beam life. It turned out that FRS has opened valves and venting caused us reduction of the quality of vacuum in ESR leading to beam loss. We manged to closed GEE5VV so that now beam is stable somehow.   Mon Apr 6 14:57:04 2020, Shahab, Runs, cooler down  cooler component GECEBG2T again had to be reset.   Mon Apr 6 20:03:50 2020, Ragan, General, Experiment finished ))  E121 experiment is finished with the last 10 hours measurement at 19:47 )) Many thanks to everyone for there significant contributions ))   Thu Apr 9 11:16:35 2020, Ragan, General, Measurements done in the experiment      Thu Apr 9 11:47:28 2020, ruijiu, , backup data  2020.4.8  12:00Started copying  data。 2020.4.9    11:52 Copied 6.3TB    Fri Apr 17 18:27:34 2020, ruijiu, Analysis, backup data  1.connect USB harddisk  to computer lxg1254 and  copy data to sever. sync -rtmv --progress --checkSUD  /media/sdgl/data/ litv-exp@sbk0l9:/lustre/ap/litv-exp/2020-   Mon Apr 20 11:17:18 2020, Ragan, General, Logbook      Wed Aug 5 17:19:16 2020, Rui-Jiu Chen, Analysis, Data structure      Thu Oct 1 22:20:03 2020, Jan, DAQ, final unpacker config  We identified an issue with randomly missing adc channels in all lmd-files before run 0273. This led to errors in the unpacking process.    Mon Nov 2 16:45:55 2020, Jan, DAQ, f_user & mbslog  Attached is the f_user.c and the mbslog.l files. The readout function is for the following setup: 3x ADC CAEN V785    Thu Nov 5 15:13:43 2020, Jan, Analysis, root script example  Attached is an example root script/macro that shows how to use scripts for analysis. Usage:   Thu Nov 19 09:14:40 2020, Jan, Detectors, remote MSCF settings for CsISiPHOS  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   Tue Dec 8 15:47:07 2020, Jan, Detectors, manual preamp & shaper settings for CsISiPhos  attached is a document showing fotos of all involved amplifiers in the chain to document the manual settings active during the experiment. Summary:   Tue Dec 15 09:25:41 2020, Jan, DAQ, SiCsIPhos signal/amplitude reconstruction      Mon Mar 29 16:31:09 2021, Pierre-Michel, DAQ, cross section  (1.393*^-8 + 3.18*^-13 + 4.707*^-8)/4.707*^-8 = 1.29595   Sun May 30 12:09:00 2021, Ragan, General, NTCAP  Attached is the info given by Carsten. The instructions to operate NTCAP are given on https://wiki.gsi.de/ESR_EXP/ManualOfNTCAP   Wed Aug 25 15:13:41 2021, Jan, DAQ, SC13 clock frequency  The frequency of the clock used as reference in scaler channel 13 has been measured precisely. In contrast to what was expected (1.5MHz precisely), it is:

Goto page 1, 2, 3 ... 7, 8, 9

ELOG V3.1.5-fc6679b