| ID |
Date |
Author |
Category |
Subject |
|
42
|
Wed May 11 08:01:44 2022 |
Zoran | Runs | Start laser scanning |
| Quote: |
Questions:
There are many other masses/isotopes/etc. visible in the Shottky spectrum. Is this wanted?
Are the vacuum gauges turned off?
Laser timing correct? +- 3 bins?
|
No, this is not wanted and yes, the machine is aware of the problem. The decision on Tuesday evening was to leave the ESR in that state in order to start the measurement and continue setting on Wednesday. Otherwise the night shift could not take place.
The additional isotopes are only a few percent and should contribute insignificantly to the background rate. |
|
43
|
Wed May 11 14:48:31 2022 |
Konstantin | DAQ | Voltage range of the Keysight DMM changed from 10V to 1V |
During the setup of the ion beam the voltage range of the Keysight DMM was changed from 10V to 1V. Additionally, the name of the high-voltage divider was adjusted (this changes only the filename of the file, which is stored at the local pc decpc003). |
| Attachment 1: VoltageRangeChanged.png
|
|
|
44
|
Wed May 11 14:59:01 2022 |
Rodolfo | Laser | Laser status |
I have measured the output energy of the laser system. All values in [mJ] and over 500 laser-pulses average
|
Date | Out of Quanta Ray @ 532 nm | Seed energy for Cobra @ 532 nm | Out of Cobra @ 601 nm
| |
10.05.2022 | 533 | 485 | 71
| |
11.05.2022 | 484 | 480 | 67
|
|
|
45
|
Wed May 11 18:00:40 2022 |
Wilfried, Phillip, Max | Detectors | double PD NO peak problem solved |
In entry 36 one finds an additional PD NO peak around bin 100.
This was caused by signal reflection in the cable.
The problem was solved by adjusting the CFD threshold from 10 to 30.
|
|
46
|
Wed May 11 18:13:04 2022 |
Wilfried, Phillip, Max | DAQ | laser scan/step complete |
The scaler channel laser scan complete and laser step complete is interchanged in go4. Carsten will fix this on the software side.
Additionally the laser scan complete signal was not there in the first place. After checking the signal on multiple points, the signal was suddenly back in the DAQ.
Possibly there is a bad cable/contact somewhere (on the Labjack?). The signal should be checked in go4 from time to time. |
|
47
|
Wed May 11 20:47:54 2022 |
Zoran | Accelerator | beam lost in SIS |
For some reason the beam was lost in the SIS soon after taking the ESR beam this evening, reason unknown. Solved by sending teh full context to the SIS machine and having
operators to manually set the voltage of the SIS extraction kicker. Afterwards a slight readjustment of the transfer beamline was necessary:
In the SIS: GTE5 KY1, MU0, QD21, QD22 as well as in the ESR: GE01MU4I (5 -> 6 mrad)
This brought back around 1E7 particle in the ESR after 5 accumulated SIS injections. |
|
48
|
Wed May 11 22:04:30 2022 |
Phillip, Wilfried, Max | General | spacial laser - ion overlap verified |
After the SIS/ESR optimization we checked the spatial overlap with the T-scrapers again.
The values are:
|
device | move in dir. | scratch (mm) | gone (mm)
| |
GECEDS1VU | up | -3.0 | -2.2 |
| |
| | | |
| |
GECEDS1HA | right | -22.9 | -22.0 |
| |
| left | -11.0 | -13.0 |
| |
| | | |
| |
GECEDS2VU | up | -4.5 | -2.7 |
| |
| | | |
| |
GECEDS2HA | right | -21.0 | -19.6 |
| |
| left | -7.8 | -8.4 |
|
The beam position is approx. as before. The laser position is still good and we have spatial overlap. |
|
49
|
Wed May 11 22:19:17 2022 |
Max, Wilfried, Volker | Laser | laser bunch timing |
We overlapped the laser and ion bunch in the time domain. The delay has to be set on the module above the laser and NOT in the ESR Messhütte!
The values are:
PD NO: 63
PD SO: 98.5
Ion bunch: 150 |
| Attachment 1: timing10_5_22.png
|
|
|
50
|
Wed May 11 22:45:22 2022 |
Max, Wilfried, Patrick | General | scanning wavelength |
The scan parameters for the next shift are:
in COBRACONTROL:
increment: 0,005nm
from position: 601,62nm
to position: 601,405nm
These are the wavelengths in air!
The wavelength in vacuum we expect is: 601.832nm
You can check the current wavelength in vacuum on the wavemeter in the LabView GUI.
edit: In the night shift, we checked the scanned vacuum wavelengths in the wavemeter and also checked the expected transition wavelength.
The resonance should be very much in the center of the above mentioned scan range.
The increment corresponds to 4.1 GHz steps. Is this small enough? |
|
51
|
Wed May 11 23:34:39 2022 |
Patrick, Carsten | Detectors | Particle Detectors / Scraper positions |
Voltages of particle detectors off.
Scraper positions:
GE02DS3HG: -8
GE01DD2AG: -25
GE01DD2IG: 6
GE02DD2_G: -30 |
|
52
|
Wed May 11 23:36:24 2022 |
Ruijiu Chen, Carsten, Guy | DAQ | start NTCAP. |
Carrier frequency:244MHz
IQ rate: 10M Samples/seconds
Reference level: -25
RF-Attenuation(dB):40
IF-Attenuation(dB):19.9288
Samples/Record:2^18=262144
Records/File:2^12=4096
Masterpath:p:\208Bi\iq\IQ_2022-05-10_17-06-29
p:\208Bi\sc\IQ_2022-05-10_17-06-29
Free space of hard disk: 34.9TB. |
|
53
|
Thu May 12 00:16:13 2022 |
Patrick, Volker, Guy, Rui-Jiu | Runs | Runs night shift |
|
Time | SIS-intensity | ESR-intensity after orbit change | cooler-HV | LMD-DAQ2 file nr | LMD-DAQ1 file nr | scan range(nm) | step width increment (nm) | dwell time(s) | n loops | comments
| |
00:15 | ~1.0e8 | 1.0e7 | 223219 | 433 - 435 | 8094 | 601.62 - 601.405 | 0.005 | 5s | 4 |
| |
00:47 | 3.7e8 | 2.0e7 | 223219 | 436 - 440 | 8095 - 8096 | 601.62 - 601.405 | 0.005 | 5s | 8 | increased to 15 injections, still not saturated
| |
| | | | | | | | | | Tried 20 injections, got no injection into ESR, so moved back to 15. The scrapers were not moving for quiet some time, even after fixing them.
The problem may have been that two ParamModi windows were opened. The injection into the SIS does not work when there are other users performing special operations with the machines.
| |
02:28 | 1.0e8 | 1.0e7 | 223220 | 441 - 444 | 8097 | 601.62 - 601.405 | 0.005 | 5s | 6 |
| |
02:54 | 2.8e8 | 1.7e7 | 223219 | 445 - 449 | 8098 - 8099 | 601.62 - 601.405 | 0.005 | 5s | 6 |
| |
03:21 | ~3e8 | ~2e7 | 223219 | DAQ did not write | 8100 - 8101 | 601.62 - 601.405 | 0.005 | 5s | 6 |
| |
| | | | | | | | | | The vacuum gauge of the e-cooler failed. It was restarted. Apparently, upon changing/fixing anything related to our accelerator pattern, the scrapers forget to move.
Then they have to be disabled and enabled again in ParamModi. Also, the injection does not work very well. Either the transition from SIS to ESR fails or we are just skipped completely.
After fixing the injection, again the scrapers failed as expected. We keep the scrapers out now.
| |
04:34 | 2.8e8 | 1.8e7 | 223219 | DAQ failed, started late 454 - 458 | 8102 - 8103 | 601.62 - 601.405 | 0.005 | 5s | 6 | Set max.counts in PMT middle and north to 15 (In file 'SetConditions.C', applied when starting go4). No scrapers used.
| |
05:02 | 2.5e8 | 1.7e7 | 223219 | DAQ late, 461 - 464 | 8104 - 8105 | 601.62 - 601.405 | 0.005 | 5s | 6 |
| |
05:30 | 2.5e8 | 1.8e7 | 223219 | 465 - 469 | 8106 - 8107 | 601.62 - 601.405 | 0.005 | 5s | 6 | Set max.counts in PMT middle and north to 20.
| |
05:57 | 2.5e8 | 1.7e7 | 223219 | 470 - 474 | 8108 - 8109 | 601.62 - 601.405 | 0.005 | 5s | 6 |
| |
06:25 | 2.6e8 | 1.7e7 | 223219 | 475 - 479 | 8110 - 8111 | 601.62 - 601.405 | 0.005 | 5s | 6 |
| |
06:50 | 2.4e8 | 1.6e7 | 223219 | 480 - 484 | 8112 - 8113 | 601.62 - 601.405 | 0.005 | 5s | 6 |
| |
07:24 | 2.2e8 | 1.5e7 | 223219 | 485 - 489 | 8114 - 8115 | 601.62 - 601.405 | 0.005 | 5s | 6 |
| |
07:49 | - | 6.5e6 | 223219 | 490 - 493 | 8116 | 601.62 - 601.405 | 0.005 | 5s | 6 | UNILAC tunnel will be open for ~1h -> no new beam from SIS available
| |
08:15 | - | 2.6e6 | 223219 | 494 - 496 | 8117 | 601.62 - 601.405 | 0.005 | 5s | 6 | UNILAC tunnel will be open for ~1h -> no new beam from SIS available
|
|
|
54
|
Thu May 12 03:25:37 2022 |
Patrick | DAQ | Laser scan complete signal off |
As in ID:46, the 'laser scan complete' again is not coming in.
It is not very useful to repeatedly fix cable contact problems.
Therefore, Carsten is adding a 'number of steps' line to the config file to "repeat" the x-axis. |
|
55
|
Thu May 12 10:10:35 2022 |
Simon, Christopher, Wilfried, Sebastian | DAQ | 1ms gated PMT north / middle added to DAQ |
We added on DAQ1 and DAQ2 1ms gated PMT North and PMT Middle signals.
Now we "supress" the signal by a factor of ~30.
DAQ1:
Channel 11 --> 1ms gated PMT North
Channel 12 --> 1ms gated PMT Middle
DAQ2:
Channel 12 --> 1ms gated PMT North
Channel 13 --> 1ms gated PMT Middle
Update: the same gate has been added to the XUV anode and anode delayed signals, but on their original TDC channels not on new ones, in order to not only reduce the background in the XUV signals but also reduce the load on the DAQ. |
|
56
|
Thu May 12 10:21:30 2022 |
Ragan, Shahab, Simon, Sebastian, Christopher, Wilfried | General | No Beam |
There is no beam in the ESR due to some problem in the UNILAC. |
| Attachment 1: Screenshot_from_2022-05-12_09-21-38.png
|
|
|
57
|
Thu May 12 11:30:18 2022 |
Ragan, Shahab, Simon, Sebastian, Christopher, Wilfried | General | Beam is back |
Beam is back in the ESR. |
| Attachment 1: Screenshot_from_2022-05-12_10-32-24.png
|
|
|
58
|
Thu May 12 11:31:11 2022 |
Simon, Christopher, Shahab, Wilfried, Sebastian, Ragan | General | Runs morning shift |
|
Time | SIS-intensity | ESR-intensity after orbit change | cooler-HV | LMD-DAQ2 file nr | LMD-DAQ1 file nr | scan range(nm) | step width increment (nm) | dwell time(s) | n loops | comments
| |
11:30 | - | 8,2e6 | 223219 | 497 - 500 | 8119 - 8119 | 601.62 - 601.405 | 0.005 | 5s | 6 | after this run we had to give the ESR Group the beam
| |
|
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59
|
Thu May 12 12:02:56 2022 |
Ragan, Shahab, Simon, Sebastian, Christopher, Wilfried | General | No beam |
There is no beam in the ESR again. |
| Attachment 1: Screenshot_from_2022-05-12_11-02-37.png
|
|
|
60
|
Thu May 12 12:51:30 2022 |
Ragan, Shahab, Simon, Sebastian, Christopher, Wilfried | General | Beam is back |
12:50 Beam is back again in the ring.
12:52-until now Kicker problem in the ESR. |
| Attachment 1: Screenshot_from_2022-05-12_11-51-35.png
|
|
| Attachment 2: Screenshot_from_2022-05-12_12-08-52.png
|
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61
|
Thu May 12 14:04:09 2022 |
Konstantin | DAQ | Go4 Laserstep histograms adapted |
In order to correctly display the gated PMT signals PMT Middle and PMT North some modifications in the Go4 code were necessary. Affected files are TLdaAnlProc.cxx, TLdaAnlProc.h and TLdaInputDescription.h.
Modifications are indicated according to the scheme "//-- HH:MM mm-dd-yyyy: <description>" (an example is given in the attached screenshot). They were needed to
- Create relevant histograms (change of variable MAX_STEP from 10 to 13 and insertion of histogram names "QSWP1MS", "NORTH_GATED" and "MIDDLE_GATED" in the std::string array stepNames.
Both adaptions were made in TLdaInputDescription.h)
- Fill the respective histograms. Changed lines of files TLdaAnlProc.cxx, TLdaAnlProc.h are listed below.
|
filename | modified lines
| |
TLdaAnlProc.h | 47 | |
TLdaAnlProc.cxx | 258-261, 381-394, 442-443, 484-494, 536-542
|
|
| Attachment 1: Go4Modifications.PNG
|
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