 Tue Apr 5 09:45:47 2022, Danyal & Yuri, Accelerator, beam is back in the ESR - a slit was moved in
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And now also in English :)
The ion beam is back in the ESR!
Apparently, there was a slit moved in. (Maybe even 2)
This could have been GEEXDR11S and/or the GEEXDR1AS
We now have the following parameters:
SIS injection energy = 537.5 MeV/u (we did not change this)
Chopper window 70 us (we did not change this)
We now have about 1.2e9 ions per injection in the ESR |
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Tue Apr 5 09:39:01 2022, Danyal & Yuri, Accelerator, Strahl ist wieder im ESR - Schlitz war reingefahren
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Der Strahl ist wieder im ESR!
Angeblich war einen Schlitz, oder sogar 2, reingefahren worden.
Es könnte entweder der GEEXDR11S und/oder den GEEXDR1AS gewesen sein.
Wir haben jetzt folgende Parameter:
SIS Injektionsenergie = 537.5 MeV/u (haben wir nicht geändert)
Chopper window 70 us (nicht geändert)
Wir haben jetzt etwa 1.2e9 Ionen pro Injektion im ESR |
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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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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 !!! |
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 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 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 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 09:10:44 2022, Ragan, Yuri, Rui-Jiu, Runs, Measurement
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NTCAP is taking data with the beam with a stop at manipulation 5 (taking all the fragments).
1)
Start time: 09:07
Stop time: 11:31
Reference level: -25 dBm
SC_2022-04-04_09-07-57
IQ_2022-04-04_09-07-57
2)
Start time: 11:35
Stop time: 14:00
Reference level: -25 dBm
SC_2022-04-04_11-35-25
IQ_2022-04-04_11-35-25 |
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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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Sun Apr 3 18:52:30 2022, Konstantin, Calibration, Laser ion beam overlap
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We measured vertical and horizontal ion beam positions. Unfortunately, the horizontal scraper positions can not be manipulated
by the "Device Control" software. Robert Boywitt has supported us a lot to get the drives moving by using the expert software on
a local control PC, which can only be remotely accessed from beapc032 with the usual experiment account "atplaser". In the first
try we were only able to determine the vertical positions of a beam which was not the 229Th (positions were measured already on
Sunday, 03.04.)
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Scraper | ion beam position (outer->inner) | |
GECEDS2VU | -1.3(2) mm | |
GECEDS1VU | -0.7(2) mm | |
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Finally, we got 229Th (Wednesday, 06.04.) and were able to measure the ion beam positions. Those are
summarized in the following table. The first values are those were the scraping begins, hence representing the
edge of the ion beam. The second values represent the central positions of the ion beam.
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Scraper | ion beam position (outer->inner) | ion beam position (inner->outer)
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GECEDS2VU | -1.6(2) mm / -1.3(2) mm | | |
GECEDS2HA | -13.8(2) mm / -13.4(2) mm | -4.0(2) mm / -4.6(2) mm | |
GECEDS1VU | -1(4) mm / -0.9(2) mm | | |
GECEDS1HA | -18.1(2) mm / -17.6(2) mm | -7.7(2) mm / -8.2(2) mm | |
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Schreenshots taken at scraper positions are given in Entry 142 |
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Sun Apr 3 18:41:11 2022, Konstantin and Rodolfo, Laser, Beam Position Stabilization
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We (Konstantin and I) have optimized the TEM "laser-beam position stabilization".
- I took some pictures (screenshots) about the current setting*.
- In order to be able to move the laser position faster we increase the P-Factor of both stages to 5 (maximum value).
- In "TriggerSignals_f_MRC_04-04-2022" the fast PD defines the origin (t = 0 s). |
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Sun Apr 3 15:34:34 2022, Ken Ueberholz , , Xuv-Detektor CFD-treshhold
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I co controlled all detector signals and
adjusted the threshold to be just above
the noise. I will double check this when
the detector can be moved in and we have a
beam. |
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Sun Apr 3 13:05:08 2022, Carsten, Laser, Distance of Partilce detecotrs wr.t. to electron cooler
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As of Yuris post in the elog the positions (Info from H. Weick):
The postion of the particle counter behind the cooler is 21.6 m behind the middle of the cooler.
This correspond to 21.6m /108,4m = 1 / 5.02 of a full revolution (please check the present revolution frequency, i.e. for 2MHz, i.e. 500ns we have the signal approx 100ns after the ion is in the middle of the cooler).
If the detecot Nord would be used for bunch timing (only planned if detctor south is defect) the distance is half a ring + 21.4m, beind the center of the cooler, i.e. (54.2m+21.6m)/108.4m ~ 0.7 |
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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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Sun Apr 3 12:31:10 2022, Rui-Jiu Chen, Yuri, Carsten, Ragan, Runs, Measurement of beam with different circles 6x
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Parameters of NTCAP:
1. IQ rate 20 MSamples/s
2. Carrier frequency: 245 MHz
3. RF attenuation(dB): 40
4. IF attenuation(dB): 19.9288
Data files:
Samples/record: 2^18=262144
Records/File:2^12=4096
Masterpath:
p:/E142/iq
p:/E142/sc
1. Manipulation 1:
(ESR EXP22 02 238U92 Brandau 30March22.C1.3 WAIT FOR MANIP BY. OF O)
Data A: IQ_2022-04-03_11-37-01, SC_2022-04-03_11-37-01
Data B: IQ_2022-04-03_11-46-54, SC_2022-04-03_11-47-04
2. Manipulation 2:
(ESR EXXP22 02.23U92 Brandau SOMarch22.CIS WAIT FOR MANI BY OP O )
Data A: IQ_2022-04-03_11-56-17, SC_2022-04-03_11-56-17 (Reference level 0dBm)
Data B: IQ_2022-04-03_12-03-27, SC_2022-04-03_12-03-27 (Reference level 0dBm)
Data C: IQ_2022-04-03_12-58-00, SC_2022-04-03_12-58-00 (Reference level -25dBm, record data
for long time.)\
3. Manipulation 3:
(ESR EXP22 02 23AUS2 Branda3OMarch22C1.7 WAIT FOR MANIP BY OP)
Data A: IQ_2022-04-03_12-11-11, SC_2022-04-03_12-11-11 (Reference level 0dBm)
Data B: IQ_2022-04-03_12-18-49, SC_2022-04-03_12-18-49 (Reference level 0dBm)
4. Manipulation 1+2+3. Measuring two injections.
Data A: IQ_2022-04-03_12-26-47, SC_2022-04-03_12-26-47(REFERENCEL LEVEL 0dBm)
Data B: IQ_2022-04-03_12-26-55, SC_2022-04-03_12-26-55(Reference level -25dBm)
Preliminary result: comparison between manipulation (MP) 1,2,3 and full manipulation
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Sun Apr 3 11:40:48 2022, Shahab, Yuri, Detectors, 245 MHz Resonator tuned to new frequency
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resonance frequency changed from 243.2 MHz to 244.692 MHz by reducing the value of both of the plungers from 395 to 325. Now after movement, the peak is on the resonance. |
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Sun Apr 3 11:01:57 2022, Rodolfo, Accelerator, Scrapers @ E-Cooler
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We the mid- and night shift (Wilfried, Simon, Patrick, Ken and me) we not able to manipulate the scrapers in the E-Cooler.
- Carsten contacted Markus concerning this issue.
- Markus replied one should follows the instructions he forward us. They are given in Entry 39 (this e-log)
- Zitat vom Markus:
"ich hatte die Scraper ja letzte Woche getestet und war zu einem vergleichbaren (Negativ-)Resultat gekommen.
Daraufhin hatte ich den Experten gebeten, die Scraper zu überprüfen, was in der Anleitung resultierte, die ich Carsten geschickt habe.
Im Gespräch habe ich verstanden, dass das Problem in der (modifizierten ?) Frontend-Software liegt.
Da nützt dann auch ein anderes Programm, ähnlich Nodal, nichts. Nodal gibt es nicht mehr, das Programm Prophelper bietet jetzt vergleichbare Möglichkeiten, aber da muss man schon wissen, was man tun will/tut."
Google translation:
"I had tested the scraper last week and had come to a comparable (negative) result.
I then asked the expert to review the scrapers, which resulted in the instructions I sent to Carsten.
During the conversation I understood that the problem lies in the (modified ?) frontend software.
Then another program, similar to Nodal, is useless. Nodal no longer exists, the Prophelper program now offers comparable options, but you have to know what you want to do/do." |
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Sun Apr 3 10:35:20 2022, Yuri (Sergey), Accelerator, Dipole correction
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The ramp for moving the beam to the central orbit
To be inserted into manipulation, GE01MU1 (SC 5): 1.05969755 rad
This can be done only when one stays in the manipulation 5
Afterwards “Manipulieren” and not “An Geräte schicken” |
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Sun Apr 3 10:28:25 2022, Yuri (Helmut Weick), Accelerator, Distance cooler - detector
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Calculation from Helmut Weick
Distance e-cooler to particle detectors chamber:
“This is half of ESR plus distance target - detector. This even is on the web page”
54.28 m + 21.64 m |