 Thu Mar 24 17:10:33 2022, Carsten, DAQ, DAQ / MBS VUPROM TDC buffer errors
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VUPROM TDC buffer errors potentially due to long TDC common Stop gate (>1ms from div 200).
Signal piped through coinc. unit gicv es shorter sginal (~200ns). This signal used as common stop seems to have cured the TDC buffer errors.. |
Thu Mar 31 13:28:17 2022, Jan Glorius, DAQ, DAQ-2 cabling docu 
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newest version V2 - valid since Mo 04.April 2022 |
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Thu Mar 31 17:56:32 2022, Konstantin, DAQ, Photodiode test signal
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| We used a signal generator to provide a 4MHz dummy-RF signal. This was divided by a factor of 2 for laser-"bunch" synchronization and by a factor of 200 for to provide the stop-tigger attached to the DAQ. With this Dummy-RF we were able to measure the relative arrival times of the laser at the photodiodes located in the laser towers. Note that the signal of the southern photodiode arrives first. This is because the scale of the time axis is given in (10/3ns)-bins since the last common-stop. |
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Thu Mar 31 20:07:47 2022, Shahab, DAQ, Schottky Display in AP Messhütte (or anywhere else)
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UPDATE: 16.05.2022
Please use ATPPC029 instead of ATPPC019 for the 245 MHz Schottky
Alternatively you can use ATPPC030 for viewing the 410 Schottky
we let this setting go for a while, in case of problems we go back to the settings below.
Bests
Shahab
----------------------------------------------------------------------------
Schottky can be displayed using GSI's standard remote desktop connection from any standard GSI computer that is connected or registered with GSI's
cable network.
On windows choose --> remote desktop connection
On Linux choose --> KRDC or from command line prompt you cab also use XFREERDP)
On Apple choose --> Microsoft Remote Desktop
then connect using experiment account using RDP protocol:
atlaser@atppc019.gsi.de
enter password
on desktop there is an icon called "SignalVu Schottky"
On the menu --> Instrument --> Connect --> USB device
245 MHz resonator: RSA607A::B021694
410 MHz resonator: RSA607A::B021705
by default you can use the 245 MHz resonator.
default setting is set to 244 MHz and span 20 MHz, if there is a beam in ESR you will see it.
have fun!
https://apps.apple.com/us/app/microsoft-remote-desktop/id1295203466?mt=12
if you like to use xfreerdp, here is the syntax:
xfreerdp -g 2560x1420 -u atplaser atppc019.campus.gsi.de |
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Thu Mar 31 22:19:14 2022, Kristian, DAQ, How To Start MBS
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(MBS server should be running at the LXG1297 machine. If not you will get an error message. Then start the server - last command in console)
Just enter the following commands in the console of any PC
ssh atplaser@r4l-41
ThE142_2022
resl
cd mbsrun/th22
mbs
@startup
connect rfio lxg1297 -disk
open file lxg1297:/data.local2/BeamTimeTh22/229Thor -auto -rfio
sta ac
To stop MBS enter the following commands
sto ac
close file
disconnect rfio
@shutdown
exit
resl |
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Fri Apr 1 01:57:12 2022, Kristian, DAQ, Timing
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with bunched primary beam (bunching frequency 1.94070 MHz) we have strong PMT (mid) and particle detector signal. Time between both detectors was measured (in 3.3ns bins)
Particle Det ; PMT (rising edge)
305 ; 256
227 ; 179
150 ; 102
73 ; 24
PD and PMT signal is second plot. Laser timing was not adjusted jet since it will change with Th beam. |
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Fri Apr 1 11:00:41 2022, Rui-Jiu Chen, DAQ, Start NTCAP
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Start taking data with NTCAP.
Carrier Frequency: 245MHz
IQ rate:5 MSamples/s
Reference level -0 dBm.
RF - Attenuation:40 dB
IF attenuation: 19.9288 dB
Date Files:
Samples/Record:2^18=262144
Records/File:2^12=4096
Masterpath: p:\E142\iq\IQ_2022-03-30_09-39-26
p:\E142\sc\SC_2022-03-30_09-39-26
Free space: o diver: 34.9TB. p driver: 34.8TB. |
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Fri Apr 1 11:19:57 2022, Rui-Jiu Chen, DAQ, S.M.A.R.T check on NTCAP
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S.M.A.R.T. check has been done on NTCAP on March 28th. All 12 hard disk drivers are normal. |
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Sun Apr 3 12:35:17 2022, Max, DAQ, Go 4 manual
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How to start go4?:
- go to console
- change directory to '/u/atplaser/go4/th22' by typing 'cd /u/atplaser/go4/th22' in the command prompt
- [OPTIONAL]: If go4 has not been started from this shell before type '. go4login64.sh'
- go4 &
- click on Launch analysis (see picture go4_1)
- click OK on the first pop-up window
- to get current data stream: enter event source: "MBS STREAM SERVER" and name: "r4l-41" (see picture go4_2), Click Submit+Start
- to analyze old data: select old .lmd file
- click on icon with three green arrows (see picture go4_3)
- click on Analysis -> Histograms -> Step2_Anl. Relevant data can be found under: "Trending" or "TDC"
if ESR bunch frequency has changed:
- open /u/atplaser/go4/th22/TLdaAnlProc.cxx in Geany (if not already opened)
- in line 490 change variable periodInBins to current frequency (frequency in e6 between /)
- close go4 and go to console
- make clean
- make all
- reopen go4 again |
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Mon Apr 4 00:19:16 2022, Ken Ueberholz, DAQ, FirstTests
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New measurement:
Start: About 00:12
Stop: About 00:43
LMDfile: 229ThFirstTest7775.lmd-229ThFirstTest7776.lmd
First tries to see the bunched ions with full test experiment circle and detectors.
Bunching visible in xuv-anode, sa_sz, PMT-south, PMT-north.
Bunches seem to be very wide, possible wrong revolution frequency set in the DAQ.
PD NO doesn't see the laser, screen prop. still in front of the window.
7e8 ions in the SIS
Standard XUV-settings
Several DAQ crashes and errors 
New measurement:
Start: About 02:00
Stop: About 02:30
LMDfile: 229ThFirstTest7780.lmd
Same test with new freq: 3.90415MHZ and without screen.
Nice Bunches in particle detector. Broad bunches in detectors.
Errors in DAQ
PD not working correctly or laser wrongly setup.
4.3e8 ions in the SIS
Standard XUV-settings |
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Mon Apr 4 15:27:31 2022, Sebastian, DAQ, PMT over wavelength histogram
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Kristian and I tried to create a "PMT over wavelength" histogram under step2Anl/LabView.
Unfortunately, the code ist still in progress and does not work yet.
The current code can be found in the TldaAnlProc.cxx |
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Mon Apr 4 15:32:38 2022, Kristiand & Sebastian, DAQ, Go4 Backup Code
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Due to some code changes (PMT over wavelength historgram) Kristian and I backuped a working Go4 code in the current go4 folder on the atplaser linux account.
It can be found in the subfolder "working go4 code 4.4.2020"
Nevertheless, the "normal" Go4 code in the th22 folder still works. |
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Mon Apr 4 16:26:04 2022, Carsten, DAQ, Backup Harddisk /External Disk
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Since we cannot write on lustre, as a temproal solution two RAID 1 (mirror) USB hard disks with cpacity 6 TB each are installed.
The disk on the lxg1297 the disk can be accessd at /meida/sdd2
an on the lxg0155 at /media/sdc2
Regular backups should be written to these disks but NOT during data taking.
If we run out of local disk space /data.localx on the machines they could also be used as target for mbs.
Pleae check regularly if there is enough spance on the local disks. |
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Mon Apr 4 17:26:48 2022, Jan Glorius, DAQ, MSCF shaper settings
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attached are the current shaper settings.
list of currently connected channels:
ch2: mid x1
ch4: Cu x1
ch6: mid x2
ch8: Cu x2
ch9: XUV x1
ch10:XUV x2 |
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Mon Apr 4 19:05:57 2022, Carsten, DAQ, Cooler Frequency Signals Ion current not connected until now
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Up to now the signals for
Ion Current
Cooler elctron current
Cooler voltage (frequency)
were not connected to the DAQs et al.
Cables in the "rded corner", i.e. where their original soruce is were not connected !!! |
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Tue Apr 5 08:00:50 2022, Kristian & Sebastian, DAQ, MBS Channellist (so far)
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MBS Channellist (time 5.4.2022)
0 Anode
1 Front
2 Back
3 PMT Süd
4 PMT Mitte
5 PMT Nord
6 PMT Cu
7 Par Det Süd
8 Par Det Nord
9 1kHz from clock generator ???
10 empty
11 empty
12 delayed common stop ???
13 PD NO
14 PD SO
15 Q-Switch
16 DC Trafo
17 Injection
18 U-Ecool
19 I-Ecool
20 P-Gun
21 P-Coll
22 Divided RF
23 1 Mhz Clock
24 empty
25 empty
26 empty
27 dye out (1MHz)
28 empty
29 detector in (1MHz)
30 Laser step complete
31 Laser scan complete |
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Tue Apr 5 11:14:52 2022, Sebastian, Kristian, Pierre-Michel, DAQ, PMT over wavelength histogram v2
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Today we finalized the PMT over wavelength histogram in:
Analysis/Histograms/Step2_Anl/LabView/laserscan
Currently the histogram shows the PMT middle signal on the y axis.
Remark: Tomorrow we create this kind of histogram for all PMTs. |
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Tue Apr 5 12:17:12 2022, Ragan, Rui-Jiu, DAQ, Instructions to start and stop NTCAP
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Attached are the instructions to start and stop data taking using the NTCAP. |
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Tue Apr 5 13:28:06 2022, Kristian, DAQ, Spikes in PMT signal
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Occasionally, we noticed a spike in the PMT signal. No ions in the ring and at PMT Cu was not even supplied with HV. Has to be some electronic pickup |
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Tue Apr 5 14:51:51 2022, Kristian, DAQ, dark counts
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We shielded the PMTs, i.e., the N2 tube, which improved the Cu PMT background rate.
Without beam and ESR lights off:
PMT Mitte: 4 Hz
PMT Nord: 1 Hz
PMT Cu: 240 Hz |