 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 |
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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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[B]UPDATE: 16.05.2022[/B]
[I]Please use ATPPC029 instead of ATPPC019 for the 245 MHz Schottky
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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
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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)
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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
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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
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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
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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.
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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"
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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
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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:
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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
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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
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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
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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:
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