 Mon Mar 30 16:25:05 2020, ruijiu, Detectors, turn down the HV
|
turn down the hv and pull out the detector.
suggest by
|
Mon Mar 30 20:51:06 2020, Ragan, Detectors, Bias Voltage for Si-pads 
|
The limit of the leakage current for all Si pads was increased from 1500 nA to 5000nA and
leakage current was recorded for different Bias Voltages (32V, 35V, 40V, 45V, 50V, 55V
and 60V).
|
|
Wed Apr 1 01:02:24 2020, ruijiu, Detectors, the detector cable is disconnected.
|
| |
|
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. |
|
Thu Nov 19 09:14:40 2020, Jan, Detectors, remote MSCF settings for CsISiPHOS
|
Attached is a list of all set values for the 5 MSCF shaper modules.
This was done prior to run0251, which served as a final benchmark for those settings.
See: https://elog.gsi.de/esr/E121/62
|
|
Tue Dec 8 15:47:07 2020, Jan, Detectors, manual preamp & shaper settings for CsISiPhos
|
attached is a document showing fotos of all involved amplifiers in the chain to document the manual settings active during the experiment.
Summary:
|
|
Mon Dec 3 15:06:04 2018, Chen, Sidhu, DAQ, Test of two preamplifier.
|
[B]Description:[/B]
We have two pre-amplifiers:
New: Max. range 5GeV, Two sensitivity options: 1 GeV and 5 GeV, Decay time = 30 us, pulse input 220 MeV/u, Ser. #MPR-32-D-5000-30-1118380.
|
|
Tue Mar 12 12:54:58 2019, Chen, Sidhu, DAQ, how to start DAQ and plot histogram.
|
[B]1. login litv-exp account[/B]
rchen@lxg1254:/data.local2/2002_238UIMS$ ssh -X litv-exp@lxg0155.gsi.de
(don't login on lx-pool.)
|
|
Tue May 28 08:36:14 2019, Jan, DAQ, MBS start & RFIO server
|
You need a DAQ-PC and the RIO crate computer.
All of the DAQ proceedures laid out here are operated from inside the DAQ screen session.
Right now for e121 the following DAQ-setup is used: (might change in the future)
|
|
Wed Jun 26 16:20:31 2019, Jan, DAQ, unpacker: lmd > root
|
I have written an unpacker for the lmd data taken with the current daq-system for E121.
The crate configuration is as follows:
ADC1 channels 1-32 (Caen 785)
|
|
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 $
|
|
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 :
|
|
Sat Mar 28 12:19:21 2020, Ragan, RuiJiu, DAQ, Change of the polarity of Amplifiers
|
Since last night, the signals from the p-side of all the Si pads were seen as negative on picoscope.
The signals from DSSSD, all n-sides of Si pads and CsI were positive which all are in MSCF-5.
Thus, I and RuiJiu, changed the polarity jumpers of MSCF 1,2,3 and 4(all the four jumpers inside the mentioned MSCF) and now hope to see positive signals |
|
Sat Mar 28 15:07:40 2020, ruijiu, DAQ, start run
|
| |
|
Sat Mar 28 16:12:25 2020, ruijiu, ragan, DAQ, enter ESR and turn on the HV crate.
|
| |
|
Sun Mar 29 09:40:35 2020, ruijiu, DAQ, restart go4
|
go4 crush up.
the problem is
due to mbs.
|
|
Sun Mar 29 13:05:36 2020, ruijiu, DAQ, start ntcap
|
IQ_2020-03-29_13-05-
56
SC_2020-03-29_13-05-
|
|
Mon Mar 30 14:24:46 2020, ruijiu, DAQ, stop taking data.
|
1. stop run0272.lmd.
2. stop NTCAP.
NTCAp file:
|
|
Thu Oct 1 22:20:03 2020, Jan, DAQ, final unpacker config
|
We identified an issue with randomly missing adc channels in all lmd-files before run 0273.
This led to errors in the unpacking process.
|
|
Mon Nov 2 16:45:55 2020, Jan, DAQ, f_user & mbslog
|
Attached is the f_user.c and the mbslog.l files.
The readout function is for the following setup:
3x ADC CAEN V785
|