| ID |
Date |
Author |
Category |
Subject |
|
Draft
|
Sat Apr 2 01:02:39 2022 |
Carsten | | Test measurements with two DAQs | We do two measurements:
One measurement using the |
|
67
|
Sat Apr 2 17:47:16 2022 |
Ken Ueberholz | | Telefon, Gästehaus | My guesthouse phone number: 06159-71-2957 |
|
71
|
Sat Apr 2 22:43:36 2022 |
Carsten | | Ring set-up for 229/89+, scraped and bunched, Iel=500mA at injection and 100mA during measurment | The ring SIS/ESR were set up for 229/89+. Pölease note that this not only 1e- Th but ponteially also the isobars of Ac (0e-1)/Pa(2e-, strongest) and U(3e-).
SIS eenrgy plus 3.5 MeV/u w.r.t. to the 238U92+ settings. We nearly don't see any of the primary beam in the ring
Cooling energy is 208998 KeV (read from the ESR multimeter).
The positioning of the scrapers is automatized but needs to be checked again tomorrow.
In order to allow for a longer measurment time, the electron curent is 500mA only during injection but is decreased to 100mA during measurement (=> longer beam lifetime).
|
|
72
|
Sat Apr 2 23:16:55 2022 |
Carsten | | Cu mirror and CsI moved in and out of the ring | Ken tested the Cu-mirror and CsI disk Detector. They move without a problem and don't scrape the ion beam. |
|
73
|
Sun Apr 3 00:41:45 2022 |
Ken Ueberholz | | Xuv-Detektor Signale | The Xuv-detector cabel channels seem to be
wrongly labeled in the Messhütte (see
picture) and are propably also wrongly
connected. Need to be relabeled and reconnected either in the
messhütte or in the laserlab. I will look for the best
solution tomorrow morning. |
|
81
|
Sun Apr 3 15:34:34 2022 |
Ken Ueberholz | | Xuv-Detektor CFD-treshhold | 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. |
|
126
|
Thu Apr 7 04:48:58 2022 |
| | ToDo's for 07.04. | Some ToDo's for the next shift:
- Work on Laser stabilisation 2nd stage in the ESR
- Mesytec power supply of the xuv-detector crashed and needs to be restarted in the ESR. Simply turning it the crate off and on again)!!
- Fix wavemeter fluctuates
- Compare MBS event size of DAQ 1 ("by laser group") and DAQ 2 ("by Carsten"), DAQ 1 data size was ~2 times larger than DAQ 2 data size.
- Use lmd-files measured last night to test Go4-Analysis.
- Practice measurement procedure with beam, see Message ID: 124. |
|
144
|
Thu Apr 7 22:18:06 2022 |
Night shift 7.4-8.4 | | Next scans | DAQ1: lxg1927:/data.local2/BeamTimeTh22/
DAQ2: lxg0155:/data.local2/E142/
LMD file name DAQ1:229Thor
LMD file name DAQ2:229Th
Shottky and NTCAP started at 23:53, center freq. 242.2M, 10MIQs, -30dBm
Shottky marker pos: 243.973MHz
|
Time | SIS-intensity | cooler-HV | LMD-DAQ1 | LMD-DAQ2 | scan range(nm) | step width(nm) | dwell time(s) | comments
| |
00:20 | 1.4e9 | 209617 | 0065-0067 | 7810 | 323.2-321.2 | 0.01 | 4 | buggy DAQ? see Elog, file 0068 empty
| |
01:27 | 1.6e9 | 209606 | 0069-0070 | 7811 | 323.2-321.2 | 0.01 | 4 | buggy DAQ? see Elog, file 0071 empty
| |
02:15 | 1.6e9 | 209611 | 0072-0073 | 7812 | 323.2-321.2 | 0.01 | 4 | buggy DAQ? see Elog, file 0074-0075, 7813-7814 empty
| |
03:00 | 1.1e9 | ? | 0076-0077 | 7815 | 323.2-321.2 | 0.01 | 4 | buggy DAQ? see Elog and below, file 0078, 7816 empty
|
We were searching for a difference of a factor of twoin both DAQs. It turns out that the default value for the MBSstream server task is scale=2. In the main task this value is explicately set to scale=1. we will now (starting with filenumber: 0078) restart the 2nd DAQ with set stream_serv scale=1.
Also TDC is disabled.
From file number 0076 in DAQ2 : ADC thresholds:
unsigned short caen_V785AH_threshold_mod0 [32] =
{0x0100 , 0x0005 , 0x0004 , 0x0003 , 0x0004 , 0x0003 , 0x0005 , 0x0003 ,
0x0005 , 0x0004 , 0x0100 , 0x0100 , 0x0100 , 0x0100 , 0x0100 , 0x0100 ,
0x0100 , 0x0100 , 0x0100 , 0x0100 , 0x0100 , 0x0100 , 0x0100 , 0x0100 ,
0x0100 , 0x0100 , 0x0100 , 0x0100 , 0x0100 , 0x0100 , 0x0100 , 0x0100 };
Before the next scan, we realized, that the laser destabilized. For the rest of the shift we tried to get laser back online (see ID:149). |
|
156
|
Fri Apr 8 09:33:52 2022 |
Dayshift 1 8.4.2022 | | Reference Measurements | DAQ1: lxg1297:/data.local2/BeamTimeTh22/
DAQ2: lxg0155:/data.local2/E142/
LMD file name DAQ1:229Thor
LMD file name DAQ2:229Th
center freq. 242.2M, 10MIQs, -30dBm
Shottky marker pos: 243.973MHz
|
Time | SIS-intensity | cooler-HV | LMD-DAQ1 | LMD-DAQ2 | scan range(nm) | step width(nm) | dwell time(s) | comments
| |
09:30 | ?? | 209614 | 0079 | 7817 | 323.2-321.2 | 0.01 | 4 | 2 loops
| |
10:15 | 2.3e9 | 209611 | 0081 | 7820 | 321.0-320.0 | 0.01 | 8 | just 1 loop, aborted 2nd loop and started from 320.5-320.4 in 0.005 steps and 10s dwell time (300), started again from 320.5-320.4 in 0.005 steps and 10s dwell time (300)
|
We crosschecked the last measurements from the nightshift for reference measurements.
Now the ESR group start switching to 1 bunch. |
|
159
|
Fri Apr 8 11:02:04 2022 |
DW, YL, RSS, SL | | Change h=2 to h=1 | After changing to h=1
The frequency manipulation #5: f=242.021487MHz (124th harmonic) [no bunching]
Manipulation #7: f=242.021812 MHz [with bunching] |
|
168
|
Fri Apr 8 15:45:24 2022 |
YL | | Spectrum manipulation 5 | See attached |
|
177
|
Sat Apr 9 04:01:35 2022 |
Carsten | | 2nd DAQ | Switched the CAEN TDC back on and changed the threshoolds for the ADC to:
unsigned short caen_V785AH_threshold_mod0 [32] =
{0x0100 , 0x0004 , 0x0003 , 0x0002 , 0x0003 , 0x0002 , 0x0004 , 0x0002 ,
0x0004 , 0x0003 , 0x0100 , 0x0100 , 0x0100 , 0x0100 , 0x0100 , 0x0100 ,
0x0100 , 0x0100 , 0x0100 , 0x0100 , 0x0100 , 0x0100 , 0x0100 , 0x0100 ,
0x0100 , 0x0100 , 0x0100 , 0x0100 , 0x0100 , 0x0100 , 0x0100 , 0x0100 }; |
|
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 }; |
|