| ID |
Date |
Author |
Category |
Subject |
Text |
 |
|
63
|
Sat Apr 2 05:08:00 2022 |
Kristian | General | Morning shift | I see no updates in the log. Is the morning
shift taking place?
|
|
|
97
|
Tue Apr 5 13:24:40 2022 |
Kristian | Detectors | PMT Cu | HV cable was in wrong channel in power supply.
Now it is back to the correct position. Checked
connection at the PMT. |
|
|
98
|
Tue Apr 5 13:28:06 2022 |
Kristian | DAQ | Spikes in PMT signal | Occasionally, we noticed a spike in the PMT
signal. No ions in the ring and at PMT Cu
was not even supplied with HV. Has to be |
|
|
99
|
Tue Apr 5 14:51:51 2022 |
Kristian | DAQ | dark counts | We shielded the PMTs, i.e., the N2 tube, which
improved the Cu PMT background rate.
|
|
|
160
|
Fri Apr 8 11:16:57 2022 |
Kristian | Laser | Wavemeter | We changed the fiber to the wavemeter. The
third fiber worked best and we could operate
the WM at low exposure times, i.e., below |
|
|
163
|
Fri Apr 8 14:14:28 2022 |
Kristian | DAQ | Delay of bunch RF | The bunch HF is now fed through a delay to
shift the stop trigger relative to the PMT
signal. The delay generator is placed directly |
|
|
182
|
Sat Apr 9 06:42:23 2022 |
Kristian | Laser | Laser step size | We changed the laser step size to 0.002 nm
which corresponds to 5.75 GHz. |
|
|
209
|
Mon Apr 11 12:50:22 2022 |
Kristian | Accelerator | Th lifetime | We used the counter to measure the lifetime.
During the 30 min scan time dropped only
slowly.
|
|
|
213
|
Mon Apr 11 22:14:51 2022 |
Konstantin, Sarper | Laser | Changing of the wavelength range | It is planned to change the scan range of
the laser wavelength from 322.41 - 322.0
nm to 322.01 - 321.6 nm @ 4 a.m. |
|
|
143
|
Thu Apr 7 19:13:26 2022 |
Konstantin, Patrick | Calibration | How to find the correct laser position | In order to achieve the correct laser ion
beam superposition one needs to do the following
steps:
|
|
|
82
|
Sun Apr 3 18:41:11 2022 |
Konstantin and Rodolfo | Laser | Beam Position Stabilization | We (Konstantin and I) have optimized the TEM
"laser-beam position stabilization".
|
|
|
40
|
Thu Mar 31 11:49:54 2022 |
Konstantin | Detectors | HV-Supply of particle detectors | We cross-checked the cabeling of the particle
detectors north and south. Particle detector
south is connected to channel [B]HV5[/B] |
|
|
42
|
Thu Mar 31 15:53:50 2022 |
Konstantin | Detectors | Control software for XUV and copper mirror detector | > Attached you find a manual for the software
used to control the movement of the XUV detector
and the copper mirror detector.
|
|
|
43
|
Thu Mar 31 17:56:32 2022 |
Konstantin | DAQ | Photodiode test signal | We used a signal generator to provide a 4MHz
dummy-RF signal. This was divided by a factor
of 2 for laser-"bunch" synchronization and |
|
|
58
|
Fri Apr 1 22:01:14 2022 |
Konstantin | Detectors | PMT operating voltages | > During the testing of the PMTs the following
operating voltages were applied:
>
|
|
|
83
|
Sun Apr 3 18:52:30 2022 |
Konstantin | Calibration | Laser ion beam overlap | We measured vertical and horizontal ion beam
positions. Unfortunately, the horizontal
scraper positions can not be manipulated
|
|
|
142
|
Thu Apr 7 16:50:22 2022 |
Konstantin | Calibration | Spacial laser-ion overlap | Laser-ion-beam overlap was achieved after
measuring the ion beam positions (compare
[URL=https://elog.gsi.de/esr/E142/83]Entry |
|
|
169
|
Fri Apr 8 17:44:25 2022 |
Konstantin | Calibration | Final Timing | We measured the timing for the laser bunch
synchronization. A summary is given below.
|
|
|
170
|
Fri Apr 8 17:57:45 2022 |
Konstantin | DAQ | Laser scanning |
[TABLE border="1"]
|
|
|
221
|
Tue Apr 12 17:01:30 2022 |
Konstantin | Detectors | Voltage PMT North | Voltage of PMT North has been increased from
2500 V to 2600 V. Additionally the threshold
was adapted from 25 mV to 12 mV. |
|