 Thu May 15 00:45:19 2025, Carsten, DAQ, DRALS preliminary timing settings (DR part)
|
[B]DAC control on sadpc115[/B]
[LIST]
[*] Total measurement window: 600 001 ms (10 min + 1ms)
|
Thu May 15 02:14:17 2025, Rodolfo, Konstantin, Simon , Laser, Laser broken 
|
The pump laser is broken!
To be more specific the YAG crystal looks cracked (see att.) and we don't have a spare one.
|
|
Thu May 15 02:34:30 2025, Dimitrios, Konstantin, Simon, Accelerator, Ion beam position
|
We measured the ion beam position with the T-scrapers. Not that the blades are 8mm wide, which must be considered to calculate the central beam position
where the laser must be aligned to.
|
|
Thu May 15 13:40:47 2025, Carsten, Runs, DR run DC with 300mA and very fine stepwidth
|
Just changed settings towards a new scanning range and bunched beam.
NTCAP, now: IQ_2025-05-15_12-00-29
new ADC file
|
|
Fri May 16 03:19:23 2025, Dimitrios, Finn, Konstantin, Accelerator, Changed settings to DRALS setup
|
Switched to bunching: Ring HF Bucket_fill(RF_manipulation)(SC7,BP2) changed from [3.0, 0.0] -> [3.0, 3.0]
Injections 5 | Breeding 30 |
|
Fri May 16 03:22:05 2025, Carsten, Dimitrios, Konstantin, Calibration, DR scan and HV Calibration against Schottky frequency (NTCAP)
|
DR scan and HV Calibration against Schottky frequency (NTCAP).
Since DR measurements are presently running with DC beam we can easily do a calibration of cooler voltage against Schottky frequency at the end of the
DR scan.
|
|
Fri May 16 04:56:51 2025, Finn, Konstantin, Dimitrios, Runs, Night shift DR runs
|
We conducted some more DR runes in this night shift at I_el = 300mA:
[TABLE border="1"]
|
|
Fri May 16 08:01:27 2025, Finn, Konstantin, Dimitrios, Detectors, Schottky channels
|
1kHz read out trigger NTCAP
DC Trafo --> B1 SRC1
|
|
Fri May 16 08:19:00 2025, Danyal, Christopher, Hendrik, Runs, morning shift DR runs
|
We are continuing taking more DR runes in the morning shift at I_el = 300mA:
opened new file
|
|
Fri May 16 11:09:38 2025, Danyal, Christopher, Laser, laser damage
|
here are some pictures of the laser damage
The Innolas technician is here now.
The new crystal has arrived (Wilfried just delivered it).
The old
crystal broke because of overheating. |
|
Fri May 16 15:25:54 2025, Rodolfo, Christopher, Laser, Pumplaser
|
The pump laser is back into the operation.
Output energy @ 532 nm: 690 mJ
|
|
Fri May 16 18:37:32 2025, Rodolfo, Carsten, Wilfried, Zoran, Ragandeep, Nils, Laser, Timing
|
After some minor adjustments for the laser done by Rodolfo, the laser is back
at ESR and visible by the PD-SO.
We checked the timing between the cooling signal of the e-cooler and the
|
|
Fri May 16 19:22:43 2025, Carsten, DAQ, New vlaues for DRALS
|
The Timing for DRALS has changed to a 12 min measurement window (max time for laser scan). The duration of the laser ramp planned to be 10 min. So we have
2 mins to openfile / closefile etc.
|
|
Fri May 16 21:23:44 2025, Ragandeep, Rodolfo, Zoran, Nils, Accelerator, Ion and laser beam position
|
We checked the ion beam position as well as the laser position with the two scraper in front (north) of the e-cooler (GECEDS1VU, GECEDS1HA) and after (south)
the e-cooler (GECEDS2VU, GECEDS2HA). The values for the ion beam slightly changed in comparsion to the mesasurment performed in [URL=https://elog.gsi.de/esr/E0038/65]ELOG
65[/URL].
|
|
Fri May 16 22:15:33 2025, Ragandeep, Rodolfo, Zoran, Nils, Laser, Scan range laser
|
The scan range according to Wilfried should be
593.15 nm - 592.55 nm
|
|
Fri May 16 22:50:00 2025, Ragandeep, Rodolfo, Zoran, Konstantin, Nils, Laser, Timing Laser + Ion
|
| We adjusted the delay of the laser according to the signal of the PD and the PMTs. |
|
Fri May 16 22:55:36 2025, Dimitrios, Finn, Konstantin, Laser, Starting first laser scan
|
NTCAP file name: SC_2025-05-16_22-54-39
We are starting now the laser scans. Therefore we changed the HV offset voltage back to 880V.
|
|
Sat May 17 08:36:20 2025, Wilfried, Christopher, Kristian , Laser, Laser Scans in coasting beam
|
switched to coasting beam
bucketfill (RF manipulation) (SC7, ...): [[3.0],[3.0]] ---> [[3.0],[0.0]]
|
|
Sat May 17 11:57:13 2025, Wilfried, Christopher, Kristian, Laser, Scans with bunched beam
|
switched to bunched beam
bucketfill (RF manipulation) (SC7, ...): [[3.0],[0.0]] ---> [[3.0],[3.0]]
|
|
Sat May 17 21:06:52 2025, Rodolfo, Christopher, Kristian, Laser, New dye
|
We have exchanged the dye laser and filled the dye pumps with fresh dye. We also noticed that the seeder was off, we turned on again and set the pump energy
to 350 mJ (at 532 nm).
|
|