ID |
Date |
Author |
Category |
Subject |
184
|
Sat Apr 9 14:15:44 2022 |
Kristian, Max, Konstantin | DAQ | Change in LV code | We changed the LV code so that the Cobra Set Wavelength is permanently sent. Before it was only sent once at the beginning of each laser step. This, however, lead to too much data for the LV->MBS server.
This was fixed by inserting a 250 ms wait in LV (in Krypton data VI). Basically, all LV values are now updated every 250 ms, which works fine with MBS |
185
|
Sat Apr 9 15:47:21 2022 |
Carsten, Rodolfo, Sarper, Patrick | Runs | Afternoon and night shift runs | After the morning shift, we got new increment (nm) for the laser scanning. We are now scanning 2 nm of wavelength range in 5 big steps (5 x 0.4 nm). Started with 323.2 nm - 322.8 nm range. Every big step (0.4 nm) is scanned with 0.002 nm of wavelength increment.
Every scan takes ~ 18 min (0.4 nm range with 0.002 nm steps), we have scanned 2 loops. Total scanning time ~36 min.
DAQ1: lxg1927:/data.local2/BeamTimeTh22/
DAQ2: lxg0155:/data.local2/E142/
LMD file name DAQ1:229Thor
LMD file name DAQ2:229Th
Schottky marker pos: 243.973MHz
Time | SIS-intensity | cooler-HV | LMD-DAQ1 start-end | LMD-DAQ2 start-end | scan range(nm) | step width(nm) | dwell time(s) | comments
|
xx:xx | x.xe9 | 209xxx | 0xxx | 78xx | 32x.x - 32x.x | 0.002 | x | sketch for filling the table
|
15:14 | 1.5e9 | 209624 | 0111-0111 | 7847-7847 | 323.2 - 322.8 | 0.002 | 5s | DAQ 2 no VUPROM TDC Pat south
|
xx:xx | 1.5e9 | 209624 | 0111-0111 | 7847-7847 | 323.2 - 322.8 | 0.002 | 5s | DAQ 2 changed TDC part south from ch 8 to ch 10
|
17:05 | 2.2e9 | 209624 | 0113-0113 | 7848-7848 | 323.2 - 322.8 | 0.002 | 5s | successful scan
|
19:04 | 1.8e9 | 209616 | 0116-0116 | 7850-7850 | 323.2 - 322.8 | 0.002 | 5s | Intensity optimization, see below, DAQ 2 TDC part south back to channel 8 - ok, XUV detector and Cu mirror moved correctly, lost the laser beam after the half of the second loop
|
19:49 | 1.8e9 | 209614 | 0117-0117 | 7851-7851 | 323.2 - 322.8 | 0.002 | 5s | successful scan
|
20:28 | 2.0e9 | 209622 | 0118-0118 | 7852-7852 | 323.2 - 322.8 | 0.002 | 5s | successful scan
|
21:07 | 2.2e9 | 209623 | 0119-119 | 7853-7853 | 323.2 - 322.8 | 0.002 | 5s | successful scan
|
22:01 | 1.8e9 | 209621 | 0122-0122 | 7856-7856 | 323.2 - 322.8 | 0.002 | 5s | successful scan
|
22:41 | ? | 209620 | 0123 | 7857 | 323.2 - 322.8 | 0.002 | 5s | First scan started by night shift
|
23:21 | 1.1e9 | 209620 | 0124 | 7858 | 323.2 - 322.8 | 0.002 | 5s | mbs crashed at 'sta ac'
|
23:32 | 1.3e9 | 209618 | 0125 | 7859 | 323.2 - 322.8 | 0.002 | 5s | e-cooler turned off
|
23:50 | 1.5e9 | 209xxx | 0126 | 7860 | 323.2 - 322.8 | 0.002 | 5s | the stop point was not set
|
23:53 | 1.5e9 | 209611 | 0127 | 7861 | 323.2 - 322.8 | 0.002 | 5s | DAQ2 must have crashed between 23:30 - 23:50
|
00:07 | 1.9e9 | 209xxx | 0128 | 7862 | 323.2 - 322.8 | 0.002 | 5s | mbs crashed at 'sta ac'
|
00:23 | 1.7e9 | 209623 | 0131 | 7864 | 323.2 - 322.8 | 0.002 | 5s | successful scan. we 'resl' after every measurement from now on. 'open file' is included in '@startup' now (ID:190).
|
01:08 | 1.6e9 | 209623 | 0132 | 7865 | 323.2 - 322.8 | 0.002 | 5s | successful scan
|
01:47 | 1.6e9 | 209623 | 0133 | 7866 | 323.2 - 322.8 | 0.002 | 5s | successful scan
|
02:35 | 1.3e9 | 209623 | 0134 | 7868 | 323.2 - 322.8 | 0.002 | 5s | successful scan
|
03:19 | 2.0e9 | 209622 | 0135 | 7869 | 323.2 - 322.8 | 0.002 | 5s | successful scan
|
04:04 | 1.3e9 | 209622 | 0136 | 7870 | 323.2 - 322.8 | 0.002 | 5s | successful scan
|
04:44 | 1.0e9 | 209622 | 0137 | 7871 | 323.2 - 322.8 | 0.002 | 5s | e-cooler turned off
|
05:25 | 1.9e9 | 209622 | 0140 | 7875 | 323.2 - 322.8 | 0.002 | 5s | successful scan. DAQ1 was started ~7s before DAQ2. The files between the last measurement an this one are essentially empty.
|
Carsten (19:00h): I notized that a lot of beam gets lost when starting scraping. I called Sergey Litvinov to help me to introduce some additional cooling/waiting (10s) after the ramp and before scraping and bunching. It increased the number of ions available for the measurement roughly by a factor of 3-5.
Some runs have wrong WM data. Set Wavelength is good.
Following files are saved differently, the command missed the 229Th in the end (/data.local2/BeamTimeTh22/229Thor -auto -rfio)
7850 (19:32)
7855 (21:56)
7856 (22:30) |
186
|
Sat Apr 9 16:55:19 2022 |
Rodolfo | Laser | | 16:15 I have changed the dye (of both oscillator and amplifier).
16:27 I have increased the pump energy (@ 532 nm) from 476 mJ to 507 mJ.
- UV output energy @ 322,8 nm: 12 mJ. (Before was at 9 mJ).
- New calibration factor is 160 for Quanta Ray monitor signal. |
188
|
Sat Apr 9 19:09:57 2022 |
Rodolfo | Laser | Optimization - Resonator of dye laser | I have tuned a bit the resonator of the dye laser.
The total output energy after the main amplifier is 86 mJ (@ 645,6 nm)
The laser wavelength read by the wavemeter appears to be more stable (on the windows computer). We can see the histogram once the present scanning is finished. |
189
|
Sat Apr 9 19:50:40 2022 |
Carsten | | New thresholds for ADC of DAQ2 (starting with file0117) | unsigned short caen_V785AH_threshold_mod0 [32] =
{0x0100 , 0x0004 , 0x0003 , 0x0004 , 0x0005 , 0x0004 , 0x0006 , 0x0005 ,
0x0006 , 0x0005 , 0x0100 , 0x0100 , 0x0100 , 0x0100 , 0x0100 , 0x0100 ,
0x0100 , 0x0100 , 0x0100 , 0x0100 , 0x0100 , 0x0100 , 0x0100 , 0x0100 ,
0x0100 , 0x0100 , 0x0100 , 0x0100 , 0x0100 , 0x0100 , 0x0100 , 0x0100 }; |
190
|
Sun Apr 10 02:20:17 2022 |
Patrick | DAQ | New mbs startup guide | Connecting to the rfio server and opening a file is included in '@startup' now. Since mbs crashes reliably every 3 or 4 runs, it may be preferable to use the following procedure (which did not crash yet):
| DAQ1 | DAQ2
|
1 | ssh atplaser@r4l-41 | ssh stoe_exp@r4l-68
|
2 | ThE142_2022 | see ID:179
|
3 | cd mbsrun/th22 | cd mbsrun/th22cd /esr/usr/stoe_exp/E142Brandau/SCA... (auto complete with tab)
|
// loop start | |
|
4 | resl | resl
|
5 | mbs | mbs
|
6 | @startup | @startup
|
7 | // connect go4 | // connect go4
|
8 | sta ac | sta ac
|
9 | // measure | // measure
|
10 | sto ac | sto ac
|
11 | clo fi | clo fi
|
12 | exit | exit
|
13 | // disconnect go4 | // disconnect go4
|
14 | // go to step 4 | // go to step 4
|
Note: At least in DAQ1, step 13 is necessary to be able to reconnect mbs to the rfio server. |
191
|
Sun Apr 10 03:56:56 2022 |
V. Hannen | Detectors | Low rate in PMT South | PMT south shows a much lower count rate than observed in elog entry 170.
Yesterday the voltage on this PMT was increased to 2400 V and the threshold setting of the CAEN CFD to 90 units, (from 70 units before) however the low readout rate was already apparent both for the analog and the discriminated signal then.
Update Sun Apr 10, 21:45: on advice from D. Winters, increased the PMT voltage to 2500 V (max. the HV supply can do, the PMT could handle up to 3000 V) |
Attachment 1: 2022-04-10_PMTs_over_wavel-03_56.png
|
|
192
|
Sun Apr 10 04:07:53 2022 |
Patrick | DAQ | go4 shows wrong frequencies and wavelengths | Update (ID:194): In labview "Stop All", close labview, stop python script (ID:197), close wavemeter. Then restart wavemeter, python script, labview an mbs.
Both labview and the wavemeter software are displaying the scanned wavelength correctly (Fig. 1 & 2), but go4 shows something which looks just like a freely drifting wavelength (Fig. 3).
The Cobra set voltages are displayed correctly. |
Attachment 1: 2022-04-10_measured_wavel.png
|
|
Attachment 2: 2022-04-10_measured_wavel2.png
|
|
Attachment 3: 2022-04-10_measured_wavel_go4.png
|
|
193
|
Sun Apr 10 04:37:29 2022 |
Patrick | DAQ | Next wavelength range | Measurements with the next wavelength scan range should be started roughly around 12:00 noon. The plan is to go to lower wavelengths / higher energies.
So the next wavelength scan range would be 322.81 - 322.4 nm, again with a step size of 0.002 nm and 5s dwell time.
In the picture below you find some calculations/estimates for the current scan range. |
Attachment 1: 2022-04-10_calculations_323nm.jpg
|
|
194
|
Sun Apr 10 06:34:49 2022 |
Kristian, Max | DAQ | Wavemeter Readout | Problem solved. Ignore this entry
If the wavemeter reading is not shown correctly in Go4 - Step2 - Labview:
Close Labview, close WM software (all windows)
Start WM software, start Labview, restart MBS |
195
|
Sun Apr 10 06:39:16 2022 |
Kristian, Marek, Max | Runs | runs morning shift 10.04. | These are the measurement runs of the morning shift (10.04.).
Time | SIS-intensity | cooler-HV | LMD-DAQ1 start-end | LMD-DAQ2 start-end | scan range(nm) | step width(nm) | dwell time(s) | comments
|
06:xx | 3e8 | 2096xx | 0141-0141 | 7876-7876 | 323.2 - 322.8 | 0.002 | 5s | just one loop
|
06:39 | 2e9 | 209621 | 0142-0142 | 7877-7877 | 323.2 - 322.8 | 0.002 | 5s |
|
07:18 | 2.1e9 | 209616 | 0143-0143 | 7878-7878 | 323.2 - 322.8 | 0.002 | 5s | 8000 particles on counter
|
07:57 | 2.2e9 | 209621 | 0144-0144 | 7879-7879 | 323.2 - 322.8 | 0.002 | 5s |
|
08:37 | 1.9e9 | 209620 | 0145-0145 | 7880-7880 | 323.2 - 322.8 | 0.002 | 5s | 7200 particles on counter
|
09:24 | 2.1e9 | 209621 | 0146-0146 | 7881-7881 | 323.2 - 322.8 | 0.002 | 5s | laser pulse energy @ start of run: 488mJ green monitor, 11.6mJ UV, 7700 particles on counte
|
10:07 | 2.1e9 | 209620 | 0147-0147 | 7882-7882 | 323.2 - 322.8 | 0.002 | 5s | optimized WM coupling, the WM data is stretched in this run (buffer problem?), also possible for previous runs
|
11:04 | 2.1e9 | 209620 | 0148-0148 | 7884-7884 | 323.2 - 322.8 | 0.002 | 5s | restarted WM, still wrong WM data, stopped after 1 run
|
11:27 | 2.1e9 | 209616 | 0149-0149 | 7885-7885 | 323.2 - 322.8 | 0.002 | 5s | restarted WM + LV
|
12:11 | 2.0e9 | 209616 | 0150-0150 | 7886-7886 | 323.2 - 322.8 | 0.002 | 5s | wrong WM data
|
12:55 | 1.9e9 | 209616 | 0151-0151 | 7887-7887 | 323.2 - 322.8 | 0.002 | 5s | changed LV code (ID: 198), WM data works now!
|
13:37 | 1.8e9 | 209620 | 0152-0152 | 7888-7888 | 323.2 - 322.8 | 0.002 | 5s |
|
14:16 | 2.1e9 | 209621 | 0153-0153 | 7889-7889 | 323.2 - 322.8 | 0.002 | 5s | 1 loop |
196
|
Sun Apr 10 08:53:26 2022 |
Kristian, Max | Laser | Timing verified | timing is still good.
we checked the relative timing between laser and ions. the time difference between photodiodes, PMTs and particle detectors is still the same as original (see ELOG ID 169). The common stop of changed a slightly so that everything appears one bin later. |
197
|
Sun Apr 10 11:11:18 2022 |
Kristian, Max | Laser | additional WM readout | since the WM readout still does not work reliably, I started a python script at atppc023 that saves timestamp and wavemeter frequency. in folder wavemeter at the desktop.
it is about 1 MB / h
Rename the old file and restart when you change the wavelength range. |
198
|
Sun Apr 10 13:17:53 2022 |
Kristian, Max | DAQ | Wavemeter readout | We changed the Labview code in order to reduce the amount of data that was overfilling the WM data queue. We removed the temperature and intensity values and added an additional 250ms wait.
We have the same wait in the Krypton VI and believed that it also slowed down the WM reading but this was obviously not the case.
Everything seems to work fine now!
Starting with the .lmd files 0151 / 7887 also the WM reading values are correct |
199
|
Sun Apr 10 15:08:42 2022 |
Carsten | DAQ | Backup of Data from 1rst Scanrange to extrenal RAID1 HDDs | I just performed a backup of all data (+log-Files) that were collected until now to the two RAID HDDs.
For DAQ1: /media/sdc2 - last file 229Thor7889.lmd. Please note, that the naming sceme on DAQ1 is inconsistent - please look for the filenumnbering
For DAQ2: /media/sdd2 - last file 229Th0153.lmd |
200
|
Sun Apr 10 15:16:19 2022 |
Carsten, Rodolfo, Sarper | Runs | Runs afternoon shifts 10.04 | These are the measurement runs of the afternoon shift (10.04.).
Wavelength range is changed from 323.2 - 322.8 nm to 322.81 - 322.40 nm.
Time | SIS-intensity | cooler-HV | LMD-DAQ1 start-end | LMD-DAQ2 start-end | scan range(nm) | step width(nm) | dwell time(s) | comments
|
16:26 | 1.95e9 | 209620 | 0155-0155 | 7891-7891 | 322.81 - 322.40 | 0.002 | 5s | laser scan did not work, labview (Thorium_main.vi) communication issue
|
16:51 | 1.8e9 | 209620 | 0156-0156 | 7892-7892 | 322.81 - 322.40 | 0.002 | 5s |
|
17:33 | 1.6e9 | 209618 | 0157-0157 | 7893-7893 | 322.81 - 322.40 | 0.002 | 5s | 7894 particles on the counter
|
18:17 | 1.6e9 | 209618 | 0158-0158 | 7894-7894 | 322.81 - 322.40 | 0.002 | 5s | 8200 particles on the counter
|
19:06 | 1.8e9 | 209618 | 0159-0159 | 7895-7895 | 322.81 - 322.40 | 0.002 | 5s | 8650 particles on the counter
|
19:44 | 1.9e9 | 209618 | 0160-0160 | 7896-7896 | 322.81 - 322.40 | 0.002 | 5s | 8600 particles on the counter
|
20:24 | 1.7e9 | 209620 | 0161-0161 | 7897-7897 | 322.81 - 322.40 | 0.002 | 5s | 4200 particles on the counter
|
21:04 | 1.7e9 | 209619 | 0162-0162 | 7898-7898 | 322.81 - 322.40 | 0.002 | 5s | 8380 particles on the counter
|
21:45 | 1.8e9 | 209619 | 0163-0163 | 7899-7899 | 322.81 - 322.40 | 0.002 | 5s | 8550 particles on the counter
|
22:24 | 1.8e9 | 209619 | 0164-0164 | 7900-7900 | 322.81 - 322.40 | 0.002 | 5s | 8016 particles on the counter |
201
|
Sun Apr 10 15:29:37 2022 |
Carsten,Sarper | Accelerator | Ecooler failed | Ecooler failed @15:23 Carsten is fixing it
Fixed @16:00 |
202
|
Sun Apr 10 15:29:53 2022 |
Rodolfo | Laser | Status - Laser system | We have checked the laser system.
- The pump laser has ~ 23Mio shots. The total output energy has dropped to about 475 mJ. Maybe it is time to install new fresh flashlamps. In case the accelerator is going to have any mantainance tomorrow (Monday) then we can take the oportunity to exchange the flashlaps.
- The dye laser is pumped with 470 mJ (angle of lambda/2 plate = 112°).
- The energy after the second harmonic is 11,3 mJ @ 646 nm. We are using the Sarper's calibration table (635 nm - 646 nm) |
203
|
Sun Apr 10 22:47:05 2022 |
Patrick, Volker, Prannay, Danyal, Alexandre, Sebastian, Kristian | Runs | Runs night shift 10.04 + morning shift 11.04 | These are the measurement runs of the night shift (10/11.04.).
Wavelength range is still 322.81 - 322.40 nm.
Time | SIS-intensity | cooler-HV | LMD-DAQ1 start-end | LMD-DAQ2 start-end | scan range(nm) | step width(nm) | dwell time(s) | particles counted | comments
|
23:05 | 1.75e9 | 209620 | 0165 - 0165 | 7901-7901 | 322.81 - 322.40 | 0.002 | 5s | 8500 |
|
23:57 | 1.?e9 | 209620 | 0166 - 0166 | 7902-7902 | 322.81 - 322.40 | 0.002 | 5s | 8500 | The HV of PMT south was changed from 2.5kV to 3kV
|
00:35 | 1.4e9 | 209620 | 0167 - 0167 | 7903-7903 | 322.81 - 322.40 | 0.002 | 5s | 4100 |
|
01:18 | 1.75e9 | 209620 | 0168 - 0168 | 7904-7904 | 322.81 - 322.40 | 0.002 | 5s | 4400 |
|
01:58 | 1.4e9 | 209620 | 0169 - 0169 | 7905-7905 | 322.81 - 322.40 | 0.002 | 5s | 7700 | The ESR went red after this run. The on-call service was called because of some power supply failure, ETA: 45min.
|
04:12 | 1.75e9 | 209620 | 0171 - 0171 | 7906-7906 | 322.81 - 322.40 | 0.002 | 5s | 7600 | With the start of this run, the wavemeter, labview and the python script were restarted. The python script was slightly adjusted.
|
04:50 | 1.6e9 | 209620 | 0172 - 0172 | 7907-7907 | 322.81 - 322.40 | 0.002 | 5s | 8300 |
|
05:31 | 1.6e9 | 209619 | 0173 - 0173 | 7908-7908 | 322.81 - 322.40 | 0.002 | 5s | 8100 |
|
06:09 | 1.6e9 | 209615 | 0174 - 0174 | 7909-7909 | 322.81 - 322.40 | 0.002 | 5s | 8000 |
|
06:52 | 1.8e9 | 209615 | 0175 - 0175 | 7910-7910 | 322.81 - 322.40 | 0.002 | 5s | 8800 | at 07:08 the cooler voltage jumped from 209615 V to 209619 V
|
07:30 | 1.9e9 | 209619 | 0176 - 0176 | 7911-7911 | 322.81 - 322.40 | 0.002 | 5s | forgotten | at 07:50 the cooler voltage jumped from 209619 to 209610 V and back again at to 209619 V
|
08:18 | 1.8e9 | 209619 | 0177 - 0177 | 7912-7912 | 322.81 - 322.40 | 0.002 | 5s | 9100 | 08:47 the cooler voltage jumped from 209618 to 209614 V and back again at to 209618 V
|
08:55 | 1.75e9 | 209619 | 0178 - 0178 | 7913-7913 | 322.81 - 322.40 | 0.002 | 5s | 8300 |
|
09:36 | 1.6e9 | 209619 | 0179 - 0179 | 7914-7914 | 322.81 - 322.40 | 0.002 | 5s | 8194 |
|
The SIS intensity is taken directly before injection to ESR. Not the SIS peak intensity as in yesterday's table. |
204
|
Mon Apr 11 04:26:53 2022 |
Patrick | DAQ | Next wavelength range | Measurements with the next wavelength scan range should be started roughly around 10:00 am.
The next wavelength scan range is planned to be 322.41 - 322.00 nm, again with a step size of 0.002 nm, 5s dwell time and 2 loops.
This range includes roughly a third of the first scan range. |
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ELOG V3.1.5-fc6679b | |