| ID |
Date |
Author |
Category |
Subject |
Text |
 |
|
39
|
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 |
|
|
40
|
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.
|
|
|
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 |
|
|
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.
|
|
|
57
|
Sun Mar 29 20:32:20 2020 |
Ragan | General | Template for Pb halflive measurement | beam:
energy:
|
|
|
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 ) |
|
|
65
|
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) |
|
|
67
|
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 |
|
|
74
|
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. |
|
|
79
|
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 |
|
|
90
|
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.
|
|
|
107
|
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+.
|
|
|
108
|
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 |
|
|
109
|
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 |
|
|
113
|
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. |
|
|
120
|
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. |
|
|
121
|
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. |
|
|
130
|
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 |
|
|
143
|
Sat Apr 4 03:06:12 2020 |
Ragan | General | Instructions if electron cooler goes off during long storage time measurements | Please read the attachment. |
|