 Mon Mar 30 04:30:17 2020, Sergiy, Dima, Runs, Second measurement with 206Pb81+ beam at I_cooler = 200 mA
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I_cooler = 200 mA
beam: 206Pb81+
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Thu Feb 27 14:04:12 2020, Ruijiu Chen, Detectors, Remote control of HV module 
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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] |
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Thu Apr 2 09:21:19 2020, Ruijiu, Runs, 2nd measurement with 2 hrs storage time (repeat)
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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.)
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Wed Aug 5 17:19:16 2020, Rui-Jiu Chen, Analysis, Data structure
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Thu Apr 2 21:03:40 2020, Ragan, Yuri, Sergey, Nikos, Runs, Zero hour measurement (S2:-10/35 mm)
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beam: 205Tl81+ (no scraping, Al ~1g/cm2)
energy: 400 MeV/u
storage time: zero hrs
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Thu Apr 2 21:10:57 2020, Ragan, Yuri, Sergey, Nikos, Runs, One hour measurement (S2:-10/35 mm)
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beam: 205Tl81+ (no scraping, Al ~1g/cm2)
energy: 400 MeV/u
storage time: 1 hrs
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Thu Apr 2 02:38:32 2020, Ragan, Yuri, Sergey, Esther, Oliver, Runs, First measurement with zero storage time
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beam: 205Tl81+ (with no scraping)
energy: 400 MeV/u
storage time: zero
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Thu Apr 2 02:46:57 2020, Ragan, Yuri, Sergey, Esther, Oliver, Runs, Measurement with 2 hrs storage time
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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
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beam: 205Tl81+ (no scraping , Al ~1g/cm2)
energy: 400 MeV/u
storage time: 10 hr
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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)
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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 10:32:16 2020, Ragan, Shahab, Runs, Five 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: 5 hr
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Sun Apr 5 10:31:08 2020, Ragan, Shahab, Runs, Two 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: hr
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Sun Apr 5 13:05:43 2020, Ragan, Shahab, Runs, Zero 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 hr
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Sat Mar 28 11:07:49 2020, Ragan, RuiJiu, Tino, , General, Nikos is changing gas jet target
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| The gas jet target is now being changed from H2 to Ar by Nikos. |
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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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Sat Mar 28 11:20:10 2020, Ragan, RuiJiu, Mei, Yuri, Tino, General, Reducing beam intensity in ESR
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| Yuri reduces beam intensity in the ESR to reduce the countrate on the detectors. |
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Sat Mar 28 11:28:11 2020, Ragan, RuiJiu, Mei, Yuri, Tino, General, ESR open
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| ESR is open now |
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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 23:44:22 2020, Ragan, RuiJiu, Laszlo, Runs, Ten 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: 10 hr
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Sat Mar 28 16:29:27 2020, Ragan, RuiJiu, Esther, General, Malfunction of several ESR machines
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The HKR crew informs us that several machines in ESR are showing malfunctions.
The on-call expert cannot be reached.
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