 Thu Jun 6 08:16:36 2024, Danyal, Accelerator, scraper info by Robert Boywitt 
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| attched is more info about the T-scrapers (E-cooler) by Robert Boywitt (Tel: 2067 or 3357) |
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Fri May 31 15:53:06 2024, Ruijiu Chen, DAQ, run NTCAP system
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NTCAP is working again.
Connect the RF cable and the scaler cables to NTCAP system.
The map of signal is recorded in following link.
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Thu Jun 6 07:54:15 2024, Danyal, General, pressure gauges and ion pumps
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yesterday (05.06.2024), firstly, the two ion pumps (underneath the fluorescence chamber) were switched off by the vacuum group (Björn Mai, Tel: 3438).
Secondly, the two pressure gauges (located near the target) were switched off. The pressure gauge at the fluo chamber is called E02VM3x and the pressure
was 5.5e-11 mbar. The other gauge is called IG2 and located further south, it measured 3.7e-11 mbar. That was when ion pumps were still switched on. |
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Fri Jun 7 17:10:45 2024, Sebastian, General, XUV LED
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| Maximum XUV LED Voltage: 6.5V |
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Fri May 31 16:49:52 2024, Carsten, DAQ, Wiring DAQ 1
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Started to Check the wiring.
Status as of 2024-05-31
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Tue Jun 11 21:38:35 2024, Julian, Imke, Rodolfo, Laser, Wavemeter HeNe long time stability
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The HeNe was running over night and the measured laser frequency of the wavemeter was logged, see picture.
A significant drift of around 300 MHz is visible during the night.
It is possible, that the laser lab got too cold during the night, as the pulsed laser was not running.
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Fri Jun 7 09:15:31 2024, Carsten, DAQ, Updated Channel List
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Mon Jun 10 09:17:38 2024, Carsten, DAQ, Updated Channel List
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Fri Jun 7 11:14:04 2024, Rodolfo, Laser, Trigger-signal for MRC
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We are using a 2-Channel Function Generator (from Textronik) to generate the trigger signal for the MRC Beam Stabilization.
The triggers are (according to the MRC nomenclature):
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Wed Jun 12 17:12:13 2024, Julian, Danyal, Rodolfo, Laser, Timing für 229Th89+
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We did the timing Ion-Beam Laser-beam time overlap.
The ion revolution frequency (and therefore the bunching frequency) is: 1.5429 MHz. |
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Thu Jun 6 09:23:53 2024, Konstantin Mohr, DAQ, Timing
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The best way to adjust the bunch-laser timing is to start go4 (mbs must be running) from atppc023. Therefore use x2goclient and use the predefined session
to access LXG1297. Start go4 as usual ([URL=https://elog.gsi.de/esr/E0052/10]Entry 10[/URL] + [URL=https://elog.gsi.de/esr/E0052/11]Entry 11[/URL]).
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Mon Jun 10 11:59:12 2024, Ruijiu Chen, Analysis, The ion identification of spectrum recorded on 2022
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| The simulated frequency is given in simulation_result.out. The yield is calculated by LISE file. The LISE file is attached here also. |
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Thu Jun 13 18:48:26 2024, Ruijiu Chen, David, Shahab, Yuri, Analysis, The ion identification of 229Th is correct.
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Harmonic: 124.0 , Bp: 7.796046 [Tm]
ion fre[Hz] yield [pps]
------------------------------------------------------------
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Wed Jun 12 09:17:43 2024, Carsten, , Tests of background with ionization pumps on (from monday)
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On monday the ionization pumps were switch on to test the background, and if it is possible to run with the pumps switched on.
Results and comments, see below:
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Sat Jun 8 12:02:20 2024, Carsten, Detectors, Test Particle Detectors - Det South not working
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With the test beam from ESR I started to have a look at the PartDets.:
North outside: Works properly with a voltage of 1450 V
South outside (behind cooler) : no signal.
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Sat Jun 8 12:45:05 2024, Carsten, DAQ, Temporary change of RF signal
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The setting was 1.540974 MHz and division factor 68 (for a 200 MeV/u) beam, and the signal was taken from a signal generator.
I now switch to the "real" RF signal from the accelerator (~400MeV/u), that is 1.9693 MHz and the factor is set to 88.
This should be set back for laser tests or adjusted when we have the real decellerated beam. |
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Thu Jun 6 07:12:49 2024, Konstantin Mohr, Laser, T-Scraper 6x
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The T-Scrapers can be driven by DeviceControl, which must be started from a console. To do so, first open the app-launcher and then select "Device Control",
which is found under "Betrieb & Steuerung". Then select the appropriate context (should be the name of the experiment). After a short time the device icons
will be present. The scrapers can be found in the last four columns and the second last row (see screenshot 1). By default, they should be colored like |
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Thu Jun 13 10:06:35 2024, Constantine, Peter, Lukas, Jonas, Dounia, Carsten, Accelerator, Suspected Beam Troubles (is it really 229-Thorium?)
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From experience, the lifetime of the beam in the storage ring should be on the order of magnitude of hours, however, we observer beam lifetimes of the order
of 10ish minutes. This suggests either a beam loss mechanism, a totally wrong species or a combination of both.
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Fri Jun 7 15:29:50 2024, Rodolfo, Detectors, Stored beam @ ESR
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| One of the first PMT signals from the stored-ion beam @ ESR |
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Wed Jun 12 09:43:57 2024, Carsten, Accelerator, Stopped NTCAP at 9:43
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| Setup at ESR is carried on - stopped the long-time NTCAP run from overnight, |
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Thu Jun 13 02:05:04 2024, Carsten, Accelerator, Short Lifetime at 100 mA
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| Lifetime still is short |
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Thu Jun 13 18:23:46 2024, Julian, Laser, Restarting the laser controller
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If the laser controller is locked up again, the little display will show an error message after an attempted medusa scan.
To restart it, follow these steps:
1.) Unlock the beam stabilization.
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Sat Jun 1 19:19:07 2024, Carsten, Detectors, Reminder: Check signals in scope and in DAQ of detectors with voltages switched off (vs. CFD threshold)
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When the ion pumps and vacuum gauges are switched off the scaler data of
PMT_south, PMT_middle, PMT_north, PD_NO, PD_SO, PartDet North, PartDet South and (Channeltron) should be checked without voltages applied in dependence
on the CFD thresholds to determine the "cable noise level" at which thre are NO entries other than 0 in hte spectra (minimum background).
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Sun Jun 9 10:20:38 2024, Carsten/Danyal, Detectors, Recap from yesterdays work with test beam (Detectors / beam /DAQ)
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In the ESR we had thw whole day (saturday) a 400MeV/u bunched 238U92+ test beam (about 2 MHz). The RF signal is cabled as input to the DAQ (seperate post/entry).
Intensity is artificially reduced to a few 10^6 (with some tests alsodone at 10^5).
In all the tests the both particle detectors were moved in pus the empty pocket on the inside to mimick the background conditions during the run (aka no |
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Sat Jun 1 18:00:20 2024, Carsten, DAQ, ReadOut Trigger im Timer Scaler changed because of faulty signal from frequency generator
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Old readout trigger (~200 Hz) in 1MHz Scaler showed two nearby peaks indicating a jitter of the readout frequency or same faulty output driver of the frequency
generator Metrix GX240 used to produce the readout frequency (see below).
[IMG]elog:9/1[/IMG]
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Thu Jun 13 12:05:31 2024, Konstantin, Peter, Jonas, Accelerator, RF-amplitude
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To realize the shortest bunches possible, we check the bunch length as a function of two different bunching amplitudes. With the bucket fill set to 1.0
we observe the spectra compiled in attachment 1. The second attachment is recorded with a bucket fill 0f 0.2.
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Thu Jun 13 10:42:02 2024, Danyal, General, Question
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What is the ion beam lifetime, according to the DCCT and Schottky?
Can somebody measure it, please?
Yesterday we could not see a fast drop in the "main" beam.
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Sat Jun 8 13:11:52 2024, Carsten, General, Put the go4login in atplaser .bashrc
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Put the go4login in atplaser .bashrc in order to avoid that one always has to go to the go4 directory to set the environment variable.
go4login64 is now executed automaticlally and the environments are now set every time you open a (bash) shell.
A fixed version 6.3 is used. The login file might be changed back after the beamtime. |
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Thu Jun 13 22:08:07 2024, Dayshift, Accelerator, Problems with Accelerator?
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It seems to be that there are some problems with the injections in the ESR.
The last 2 accumulation cycles showed that wheter only a small amount of ions are injected into the ESR or the injection is missing.
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Wed Jun 26 11:59:12 2024, Ruijiu, Shahab, Carsten, Analysis, Prepare plots for Thomas's presentation 6x
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data:
(env_OnlineDataAnalysisSystem) litv-exp@lxbk0497:/lustre/astrum/experiment_data/2024-05_E018/OnlineDataAnalysisSystem/data/iq/IQ_2024-06-
12_21-47-54$
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Thu Jun 6 09:39:23 2024, Carsten, DAQ, Preliminary Channel Table (DAQ1 and DAQ2)
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Sun Jun 9 10:08:24 2024, Carsten/Danyal, Detectors, Particle detectors - Recap of yesterdays work
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[B]South (behind cooler) - "SA_SZ" - DD2...[/B]
We have put the particle detecotr North to the poistion behind the cooler (north) to replace the defective particle detector.
This detector is an old "Kozhuharov" style plastic szintillator that runs with a voltage of 1400-1500 V.
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Wed Jun 5 19:22:43 2024, Carsten, Konstantin, Rodolfo, Detectors, PMT tests and preliminary thresholds
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For all channels of the CAEN CFD the width of the logic signal is set to 255ns (maximum) to mitigate potential double pulses. For the very low count rates
of the experiment this is not problem.
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Mon Jun 3 18:24:44 2024, Rodolfo, Detectors, PMT arrangement
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The picture shows the actual configuration of the PMTs.
We are using a 4-Channel High-Voltage supply. The channels are labeled according to the PMTs names.
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Tue Jun 4 22:54:02 2024, Rodolfo, Detectors, PMT - Manufacture - Test Result Data
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Wed Jun 12 21:21:15 2024, Yuri, Detectors, NTCap started
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Fcenter - 244.6 MHz
BW - 10 MHz |
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Fri Jun 14 06:38:41 2024, Konstantin Mohr, Bernhard Maass, Peter Micke, Lukas Kau, Dounia Boudefla, Runs, Morning runs
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Very successful shift, no crashes until 11:10
Previous night shift had problems with the pulse laser starting around 3am.
Something was loose at the FCU. Rodolfo was called in and was able to fix it.
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Mon May 27 13:37:31 2024, Jan, DAQ, MesyTec Shaper Control
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For the 2nd DAQ the MesyTec Shaper ([URL=https://elog.gsi.de/esr/NucAR+lab/230418_110112/MesyTec_MSCF16-F-V.pdf]MSCF manual[/URL]) is used as a spectroscopy
amplifier and CFD.
It is controlled via the MesyControlGUI, which is installed on SADPC055 with a USB->mesyBUS connection to the MSCF.
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Thu Jun 13 12:37:14 2024, Ruijiu Chen, David, Analysis, Lifetime of beam in center of mass is 193 s.
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Thu Jun 13 14:41:22 2024, Ruijiu Chen, David, Analysis, Lifetime of beam during June 13 9:00~11:00
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Thu Jun 13 14:35:27 2024, Ruijiu Chen, David, Analysis, Lifetime of beam during June 13 7:00~9:00
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Thu Jun 13 14:20:36 2024, Ruijiu Chen, David, Analysis, Lifetime of beam during June 13 4:30:7:00
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Thu Jun 13 13:29:47 2024, Ruijiu Chen, David, Analysis, Lifetime of beam during June 12 22:00- June 13 0:00
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Mon Jun 3 19:42:06 2024, Rodolfo, Laser, Laser-beam through E-Cooler
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UV-laser beam is now going through the Electron-Cooler.
Telescope settings:
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Wed May 29 09:49:30 2024, Rodolfo, Laser, Laser-beam profile
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Using a telescope (Plan-concave lens -500 mm and Plan-convex lens +1000 mm) after the pulsed-dye laser system we got the following laser-beam profile at
the Electron-Cooler's position. Dye Laser @ 550 nm / 275 nm |
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Thu Jun 13 18:38:24 2024, Rodolfo Sanchez, Julian Palmes, Sebastian Klammes, Laser, Laser Dye change - new MRC settings - scraper checks of laser beam
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We changed the dye at ~3pm.
After some fine adjustements of the laser we had to change the MRC settings, because the laser position changed.
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Tue Jun 11 09:17:46 2024, Julien, Konstantin, Lukas, DAQ, Important commands (DAQ1)
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To connect to the DAQ1 pc, open a terminal and type:
ssh atplaser@r4l-41
Enter password for user atplaser ([B]note that you're typing on an English keyboard[/B]).
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Tue Jun 11 22:59:06 2024, Carsten, Accelerator, Identification / NTCAP started
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ESR is set-up in most parts.We are trying to identify our 229Th89+. It is more cumbersome then exspected because of the thick target an d the according
energy loss, the pattern has changed compared to the last beamtime.
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Tue Jun 11 23:46:06 2024, Carsten )))), Accelerator, ID
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----
The frequency of the primary beam 238U82+ at the injection:
Ucool = -360 V
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Wed Jun 12 01:51:51 2024, RuiJiu, David, Analysis, ID
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The preliminary identification has been thoroughly checked using the RionID software. We have confirmed that the identification is accurate.
Attached can be found the simulation file with each of the expected ions, their revolutions frequencies in the 125th harmonic and expected yield from the |
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Tue Jun 11 21:23:11 2024, Julian, Imke, General, How to read out voltage
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1.) If not already opened, open the Medusa Laser Control software, see picture:
2.) In the "view" submenu, choose "proteus status".
3.) At the bottom of the list, the K250 shows the scaled voltage. |
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Tue Apr 16 16:28:21 2024, Danyal, General, Great
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| Thanks Jan! |
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Sat Jun 1 18:55:18 2024, Carsten, Analysis, Go4 Analysis Version for DAQ1 (atplaser)
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Small enhancements and minor corrections / bug fixes are made to the original version of the online GO$ for DAQ1.
Assignment of channel names corrected, condition names adapted to present DAQ
Potential pitfalls are commented in the code.
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Wed May 29 10:54:21 2024, Shahab, Jan, General, Gas Target Events with new timing system
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Using the new timing system, it is possible to grab any events as pulses, but also as long inter event gates under GENESYS. Many instances of GENESYS can
be running on ACO computers, so that there is no conflict, if an instance is running in main control room or another in ESR-Messhütte.
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Sat Jun 15 03:46:34 2024, Night shift, Accelerator, GSI down
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All quadrupole and dipole magnets at SIS and ESR are out of order. Repairs can be expected earliest tomorrow evening. No shifts will take place before 6pm.
Have a look at your mails for details. |
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Tue Apr 16 14:42:37 2024, Jan, General, G-PAC Proposal
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Mon Jun 10 08:57:35 2024, Carsten/Konstantin, DAQ, Further Tests from Sunday 2024-06-09 - new voltages and tresholds for PMTs - testdata in files
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Voltages and thresholds increased for PMT Middle and North (in order to account for the ADC measurement in DAQ2
[TABLE border="1"]
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Wed Jun 12 18:48:43 2024, Afternoon shift, Runs, First laser scans
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[TABLE border="1"]
Time | Part. Det. Int | ESR-intensity| cooler-HV | LMD-DAQ1 Files | LMD-DAQ2 Files | scan range(nm) | number of positions | dwell time(s) | n loops | comments
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Wed Jun 12 12:12:44 2024, Konstantin Mohr, Julien Spahn, Jonas Koedel, Bernhard Maass, Accelerator, First Scraper Scan
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Thorium is in the ESR, we have time to check the beam position with the scrapers.
Beam Intensity in the ring 6E-5
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Thu Jun 6 19:42:20 2024, Carsten, Detectors, Exchange of amplifer channels / cables channels / HV voltage cables for PMT south
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In order to check if the problem of regular burst of pulses on the PMT south is related to amplfier channels and or the HV cable, the cheannels of the amplifiers
in the ESR were changed. Likewise, a different HV cable is now used for the supply of the PS.
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Thu Jun 6 19:47:01 2024, Carsten, DAQ, Exchange of Mesytec CFD/shaper - noise on signal lines from ESR magnets
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Jan exchanged the Mesytec CFD/shper since it could not be "remote controlled" anymore. The new one has different shaping times and delays.
It is noted the threshold range is rather small.
With the new shaper only the x100 signals could meaningfully discriminated etc.
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Thu Jun 13 14:56:09 2024, Stefan Schippers, Accelerator, Estimated beam lifetime: About 150 s
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Estimate of storage lifetime using my code 'hydrocal':
ion mass in u ...................................: 229
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Thu Apr 25 16:34:05 2024, Rodolfo, Laser, Efficiency of Fluorescein27
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The figure below shows the efficiency of Fluorescein27 vs. Wavelength. Each point was averaged over 500 laser shots.
Dye Laser: Sirah, Cobra Strech.
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Thu Jun 6 19:51:11 2024, Carsten, Accelerator, ESR crew left after persisting problems with ESR magnets
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| No beam today.--. |
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Wed Jun 5 14:17:36 2024, Carsten, Accelerator, Distance Cooler Detector
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Calculation from Helmut Weick (copied from E142)
Distance e-cooler to particle detectors chamber:
“This is half of ESR plus distance target - detector. This even is on the web page”
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Fri Jun 14 13:14:29 2024, Konstantin, Bernhard, Peter, Lukas, General, DAQ crashes at :10
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10 Minutes past a full hour (XX:10) the windows PCs (sometimes) loose connection.
This causes the labview server & the laser remote ctrl to crash.
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Sat Jun 1 18:14:01 2024, Carsten, Analysis, DAQ and analysis directories
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[U][B]DAQ1 (original):[/B][/U]
-user atplaser
-runs on lxg1297
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Fri Jun 14 11:44:23 2024, Carsten Brandau, Accelerator, Cooling Time in SC7 increased from 9s to 12s
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| Cooling Time in SC7 increased from 9s to 12s |
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Thu Jun 13 18:03:36 2024, Afternoon shift, Runs, Continuation: First scans
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[TABLE border="1"]
Time | Part. Det. Int | ESR-intensity| cooler-HV | LMD-DAQ1 Files | LMD-DAQ2 Files | scan range(nm) | number of positions | dwell time(s) | n loops | comments
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Sat Jun 1 19:00:57 2024, Carsten, DAQ, Change of (offline) frequency for common stop (CS) of VUPROMs (and 2nd TDC) and scaling factor
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Temporarily, for tests of the second DAQ I changed the frequency from the frequency generator and scaling factor that is used for the common stop signal
to a value that is close to the expected value in the experiment.
Reason: For the second TDC (CAEN 25ps) TDC the time between to CS events must be of the order of 45 us. The TDC can store events up to about 51,x us and |
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Wed Jun 12 22:48:55 2024, Carsten, , Beam Halo
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The seamingly short live time reported in [URL=https://elog.gsi.de/esr/E0052/53]entry 53[/URL] is due to a halo from a different isotope (?). It can be
scraped away from the outside. The 229Th89+ primary beam can be scaped away from the inside and the halo stays. There is some spacial headroom between
the two components.
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Fri Jun 14 14:44:51 2024, Afternoon shift, Runs, Afternoon shift
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Pizza shift
[B]the scan direction is from higher wavelength to lower wavelength, even though it is noted otherwise here in the software.
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Sun Jun 2 00:01:46 2024, Carsten, DAQ, 25ps TDC CAEN V1290N DAQ2 lead to crash in DAQ2 due to a hardware issue
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On the CAEN V1290N TDC the piggy board for the lower 8 channels is not fixed well to the motherboard.
That prevented to the whole DAQ2 to trigger correctly or even crash every once in a while. Long attempt sot find the error in hard and in software.
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Thu Jun 13 10:32:29 2024, Konstantin, Accelerator, (Proper) Cooler settings
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We change the acceleration voltage of the electron cooler and observe the platform high voltage and the count rate at the particle detector south.
Cooler current at 100mA.
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