 Mon Apr 20 11:17:18 2020, Ragan, General, Logbook 
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Sun Mar 29 21:39:27 2020, ruijiu, Analysis, Ionization cross section and capture cross section for h-206Pb + Ar
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Ionization cross section = 1320 barn.
Capture cross section = 557+137+44.5=735.5.
sigma_Ion/sigma_cap=1.79 |
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Sat Mar 28 04:32:15 2020, Ragan, Detectors, Ionisation events on DSSSD
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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
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Sat Mar 28 14:19:24 2020, Ragan, RuiJiu, Mei, Yuri, General, Instructions to change the electron cooler current
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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). |
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Sat Apr 4 03:06:12 2020, Ragan, General, Instructions if electron cooler goes off during long storage time measurements
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| Please read the attachment. |
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Mon Mar 30 12:12:25 2020, ruijiu, General, Instruction of NTCAP for shift person
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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. |
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Tue Feb 25 15:48:31 2020, ruijiu chen, DAQ, Important folders of e121 eperiments:
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1. slow control:
1.1. program file:
litv-exp@ringpi:~/epics/mrcc_ioc/db $
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Thu Apr 2 15:24:15 2020, Ragan, General, How to know whether electron cooling is working
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| For Alle and Kuehler the bottom left status should look like as shown in pictures below. |
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Sun Apr 5 20:23:02 2020, Ragan, Alex, Esther, Runs, Half-hour measurement (S2: 0/35 mm and S6: -20/7 mm) 7x
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beam: 205Tl81+ (no scraping , Al ~1g/cm2)
energy: 400 MeV/u
storage time: 0.5 hr
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Sun Apr 5 21:50:02 2020, Ragan, Alex, Esther, Runs, Half-hour measurement (S2: 0/35 mm and S6: -20/7 mm) 7x
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beam: 205Tl81+ (no scraping , Al ~1g/cm2)
energy: 400 MeV/u
storage time: 0.5 hr
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Fri Apr 3 00:39:07 2020, Ragan, Pierre-Michel, Dima, Runs, Half hour measurement (S2: 0/35 mm)
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beam: 205Tl81+ (no scraping , Al ~1g/cm2)
energy: 400 MeV/u
storage time: 0.5 hr
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Fri Apr 3 03:19:46 2020, Ragan, Pierre-Michel, Dima, Runs, Half hour measurement (S2: 0/35 mm)
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beam: 205Tl81+ (no scraping , Al ~1g/cm2)
energy: 400 MeV/u
storage time: 0.5 hr
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Fri Apr 3 06:35:37 2020, Ragan, Pierre-Michel, Dima, Mei, Shahab, Runs, Half hour measurement (S2: 0/35 mm)
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beam: 205Tl81+ (no scraping , Al ~1g/cm2)
energy: 400 MeV/u
storage time: 0.5 hr
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Fri Apr 3 12:02:32 2020, Ragan, Mei, Shahab, Runs, Half hour measurement (S2: 0/35 mm)
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beam: 205Tl81+ (no scraping , Al ~1g/cm2)
energy: 400 MeV/u
storage time: 0.5 hr
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Sat Apr 4 00:11:23 2020, Ragan, Pierre-Michel, Dima, Runs, Half hour measurement (S2: 0/35 mm and S6: -20/7 mm)
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beam: 205Tl81+ (no scraping , Al ~1g/cm2)
energy: 400 MeV/u
storage time: 0.5 hr
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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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Fri Mar 27 20:05:43 2020, Ragan, General, H2 gas jet ready
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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 ) |
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Sun Mar 29 12:56:02 2020, Ragan, RuiJiu, General, Good positive signals from MSCF
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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 ! |
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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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