| ID |
Date |
Author |
Category |
Subject |
Text |
 |
|
41
|
Sat Mar 28 16:12:25 2020 |
ruijiu, ragan | DAQ | enter ESR and turn on the HV crate. | |
|
|
42
|
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.
|
|
|
43
|
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 |
|
|
44
|
Sun Mar 29 09:40:35 2020 |
ruijiu | DAQ | restart go4 | go4 crush up.
the problem is
due to mbs.
|
|
|
45
|
Sun Mar 29 09:57:26 2020 |
ruijiu | Detectors | the HV of charged particle detector | MHV1 MHV2
ch1:1st Sipad 4th
Sipad
|
|
|
46
|
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) |
|
|
48
|
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
|
|
|
49
|
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.
|
|
|
50
|
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.
|
|
|
51
|
Sun Mar 29 13:05:36 2020 |
ruijiu | DAQ | start ntcap | IQ_2020-03-29_13-05-
56
SC_2020-03-29_13-05-
|
|
|
52
|
Sun Mar 29 13:43:46 2020 |
| | | |
|
|
53
|
Sun Mar 29 14:01:45 2020 |
ruijiu | | beam position on DSSD | move the detector 1cm
outside.from 60mm to
70mm.
|
|
|
54
|
Sun Mar 29 14:29:13 2020 |
ruijiu | | e121_run_00240.lmd | s6 positon at 50mm. |
|
|
55
|
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
|
|
|
56
|
Sun Mar 29 18:55:19 2020 |
Shahab | Runs | Frequency list for identification | Here are some frequencies for identification
of the fragments.
|
|
|
57
|
Sun Mar 29 20:32:20 2020 |
Ragan | General | Template for Pb halflive measurement | beam:
energy:
|
|
|
58
|
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 |
|
|
59
|
Sun Mar 29 21:34:46 2020 |
Ragan | Runs | First run | beam: 206Pb81+
energy: 400 MeV/u
|
|
|
60
|
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 |
|
|
61
|
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 ) |
|