| ID |
Date |
Author |
Category |
Subject |
|
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 |
| Attachment 1: main_s6_neg8_202003292059.png
|
|
| Attachment 2: main_s6_neg8_202003292059.root
|
|
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 |
| Attachment 1: 202003292141.png
|
|
|
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.
2. Start labview program and start a new run. |
| Attachment 1: Instruction_of_NTCAP_for_shift_person.png
|
|
|
95
|
Mon Mar 30 13:40:57 2020 |
ruijiu | Detectors | HV of Inner detector |
|
| Attachment 1: IMG_20200330_133909.jpg
|
|
|
96
|
Mon Mar 30 13:41:20 2020 |
ruijiu | Detectors | HV of Inner detector |
|
| Attachment 1: IMG_20200330_133909.jpg
|
|
|
98
|
Mon Mar 30 14:24:46 2020 |
ruijiu | DAQ | stop taking data. |
1. stop run0272.lmd.
2. stop NTCAP.
NTCAp file:
SC_2020-03-30_09-28-14
IQ_2020-03-30_09-28-14
(saved in drive: p) |
|
101
|
Mon Mar 30 16:25:05 2020 |
ruijiu | Detectors | turn down the HV |
turn down the hv and pull out the detector.
suggest by
Hi everybody,
is there now much more rate on the detectors?
Perhaps it helps to turn down the bias for a while and to take the detectors out of the beam, by pulling the pocket out?
And then see if the leakage current comes down again.
good luck, Thomas
***********************************************
Dr. Thomas Faestermann | Tel: +49-89-2723868
Physik Department E12 |
Techn. Univ. Muenchen | Mob: +49-1626193388 |
|
102
|
Mon Mar 30 16:37:53 2020 |
ruijiu | Analysis | |
|
|
106
|
Tue Mar 31 15:30:43 2020 |
ruijiu | Analysis | The beam position on DSSD with different conditions on on the dEE spectrum |
I analyzed the first measurement with 206Pb81+ beam, run 250-267. |
| Attachment 1: 202003311453.png
|
|
| Attachment 2: 202003311508.png
|
|
| Attachment 3: 202003311509.png
|
|
| Attachment 4: 202003311510.png
|
|
| Attachment 5: 202003311511.png
|
|
| Attachment 6: 202003311512.png
|
|
|
111
|
Wed Apr 1 01:02:24 2020 |
ruijiu | Detectors | the detector cable is disconnected. |
|
|
112
|
Wed Apr 1 01:05:36 2020 |
ruijiu | Detectors | detector position fixed at 60 mm |
The detector cable was disconnected . We entered and reconnected the cable. |
| Attachment 1: VID_20200401_010416.mp4
|
|
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. |
|
171
|
Thu Apr 9 11:47:28 2020 |
ruijiu | | backup data |
2020.4.8 12:00Started copying
data。
2020.4.9 11:52 Copied 6.3TB
data. The copy speed is 65-67MB/s.
2020.4.15 Bring the two USB hard disk to my office and connect them to lxg1298 computer.
Send email |
| Attachment 1: IMG_20200409_113155.jpg
|
|
|
172
|
Fri Apr 17 18:27:34 2020 |
ruijiu | Analysis | backup data |
1.connect USB harddisk to computer lxg1254 and copy data to sever.
sync -rtmv --progress --checkSUD /media/sdgl/data/ litv-exp@sbk0l9:/lustre/ap/litv-exp/2020-
04-14 e121_rchen/NTCAP/hd1
2020.05.02 08:06 copied 11.88 TB to server. 1.8TB rest on hard disk. |
| Attachment 1: IMG_20200417_162202.jpg
|
|
|
100
|
Mon Mar 30 15:03:58 2020 |
ruijiu Tino, Yuri, Lasoro, Nik and Uli | Detectors | the gas bottle is empty. |
The gas bottle was empty. Tino replaced
the previous old bottle with 50 bar gas left.
Yuri is getting new gas bottles.
Yuri got a new gas bottle. We repalced
the the new gas bottle. There is 200
bar gas left now.
The old gas bottle with 50 bar gas
left was kept inside ESR.
The empty gas bottle was removed from
ESR.
The outlet volve was decreased by 30 degree.
Since the value is almost 0, we can not read the value of outlet volve. |
| Attachment 1: IMG_20200330_152735_mh1585575780057.jpg
|
|
|
99
|
Mon Mar 30 14:48:02 2020 |
ruijiu and Tino | Detectors | The leakcurrent of SiPad is over the setting limit. |
Because the
leakcurrent of
6 Sipads is
over the
setting limit,
the alarm of
HV module is
sounding.
Ruijiu
increase the
limit to 1500
uA. |
| Attachment 1: Screenshot_20200330-145551.jpg
|
|
| Attachment 2: Screenshot_20200330-145544.jpg
|
|
| Attachment 3: IMG_20200330_144915.jpg
|
|
|
15
|
Tue Feb 25 15:48:31 2020 |
ruijiu chen | DAQ | Important folders of e121 eperiments: |
1. slow control:
1.1. program file:
litv-exp@ringpi:~/epics/mrcc_ioc/db $
1.2 user interface:
litv-exp@lxg1298:~/E121/scripts/GUIe121_new
2. mbs:
2.1 user interface
litv-exp@lxg1298:~/E121/scripts$ ./e121_gui.py
2.2 source
R4L-47 litv-exp > pwd
/esr/usr/litv-exp/2020_e121/
3. go4:
litv-exp@lxg1298:~/2019Munich-Det/Go4-Muenchen-3V785AH-1V830-simple$ go4
4. experimenal data:
litv-exp@lxg1298:/data.local1/E121 |
|
16
|
Tue Feb 25 15:49:58 2020 |
ruijiu chen | DAQ | changing scaling factor. |
How to change scaling factor?
The parameters is in f_user.c file:
1. open the f_user.C with emacs :
R4L-47 litv-exp > emacs -nw f_user.c
2. change the parameters "MWPC_downscale".
#define MWPC_downscale 0 // reduction = 2**MWPC_downscale
3.compile the program.
4. restart mbs. |
|
41
|
Sat Mar 28 16:12:25 2020 |
ruijiu, ragan | DAQ | enter ESR and turn on the HV crate. |
|
|
80
|
Mon Mar 30 07:02:15 2020 |
tino | Runs | Second measurement with 206Pb81+ beam at I_cooler = 20 mA |
I_cooler = 20 mA
beam: 206Pb81+
energy: 400 MeV/u
purpose: data for the measurement of half life of 206Pb81+ due to its interaction with electron cooler and residual gas
Detector position (CsISiPHOS): 60 mm
Detector position (MWPC): -10 mm
run start at 06:08 , run file: run0270.lmd (0268.lmd and 0269.lmd are garbage files)
file running: 0270.lmd
_______________________________________________________________________________
time: 07:00
I_cooler = -01 mA
ESR particles: 2.2E5
NTCAp file:
SC_2020-03-30_06-11-08
IQ_2020-03-30_06-11-16
(saved in drive: p)
copy and repeat the above (below the line) every 30 minutes |