 Thu Apr 2 02:36:48 2020, Ragan, General, Stochastic cooling and orbit problem
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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 ! |
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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. |
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 Apr 3 11:52:27 2020, Shahab, Runs, Stacking 54 times!
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Fri Apr 3 14:08:41 2020, Shahab, Runs, Stacking
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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)
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beam: 205Tl81+ (no scraping , Al ~1g/cm2)
energy: 400 MeV/u
storage time: 6 hr
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Tue Dec 15 09:25:41 2020, Jan, DAQ, SiCsIPhos signal/amplitude reconstruction
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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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Sat Mar 28 13:09:11 2020, Mei,Yury, Tino, Ragan, Ruijiu, General, Shift plan
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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 |
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Tue Mar 31 21:07:05 2020, Ragan, General, Separation of 203Tl80+ and 200Hg79+ using scrapper in ESR
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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. |
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Mon Mar 30 02:27:44 2020, Ragan, 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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Mon Mar 30 02:58:51 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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Mon Mar 30 03:30:03 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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Mon Mar 30 04:00:19 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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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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Mon Mar 30 04:15:29 2020, Ragan, General, Second measurement with 206Pb81+ beam at I_cooler = 200 mA
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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. |
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Mon Mar 30 06:15:13 2020, Ragan, Runs, Second measurement with 206Pb81+ beam at I_cooler = 20 mA
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I_cooler = 20 mA
beam: 206Pb81+
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Mon Mar 30 06:30:52 2020, Ragan, Runs, Second measurement with 206Pb81+ beam at I_cooler = 20 mA
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I_cooler = 20 mA
beam: 206Pb81+
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Mon Mar 30 07:02:15 2020, tino, Runs, Second measurement with 206Pb81+ beam at I_cooler = 20 mA
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I_cooler = 20 mA
beam: 206Pb81+
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Mon Mar 30 07:34:06 2020, Tino, Runs, Second measurement with 206Pb81+ beam at I_cooler = 20 mA
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I_cooler = 20 mA
beam: 206Pb81+
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