 Wed Mar 23 11:20:55 2022, Simon, Detectors, PMT operating voltages
|
During the testing of the PMTs the following operating voltages were applied:
PMT Cu: -1300V
PMT Nord: -2500V
PMT Mitte: -1800V
PMT Süd: -1800V
Further optimization will be necessary during background measurements. |
Sun Apr 3 11:40:48 2022, Shahab, Yuri, Detectors, 245 MHz Resonator tuned to new frequency 
|
resonance frequency changed from 243.2 MHz to 244.692 MHz by reducing the value of both of the plungers from 395 to 325. Now after movement, the peak is on the resonance. |
|
Thu Mar 31 20:07:47 2022, Shahab, DAQ, Schottky Display in AP Messhütte (or anywhere else)
|
UPDATE: 16.05.2022
Please use ATPPC029 instead of ATPPC019 for the 245 MHz Schottky
Alternatively you can use ATPPC030 for viewing the 410 Schottky
we let this setting go for a while, in case of problems we go back to the settings below.
Bests
Shahab
----------------------------------------------------------------------------
Schottky can be displayed using GSI's standard remote desktop connection from any standard GSI computer that is connected or registered with GSI's
cable network.
On windows choose --> remote desktop connection
On Linux choose --> KRDC or from command line prompt you cab also use XFREERDP)
On Apple choose --> Microsoft Remote Desktop
then connect using experiment account using RDP protocol:
atlaser@atppc019.gsi.de
enter password
on desktop there is an icon called "SignalVu Schottky"
On the menu --> Instrument --> Connect --> USB device
245 MHz resonator: RSA607A::B021694
410 MHz resonator: RSA607A::B021705
by default you can use the 245 MHz resonator.
default setting is set to 244 MHz and span 20 MHz, if there is a beam in ESR you will see it.
have fun!
https://apps.apple.com/us/app/microsoft-remote-desktop/id1295203466?mt=12
if you like to use xfreerdp, here is the syntax:
xfreerdp -g 2560x1420 -u atplaser atppc019.campus.gsi.de |
|
Thu Apr 7 14:01:22 2022, Sebastian, Max, Detectors, Mesytec reset
|
The Mesytec crate was turned off and on again.
It is again possible to communicate with the XUV detector via python to apply voltage and current. |
|
Thu Apr 14 12:27:18 2022, Sebastian, Max, Detectors, Connection to XUV / Cu reestablished!
|
The connection to the XUV and Cu were lost during the nightshift.
The XUV detector was in the park position,
BUT the Cu mirror was in the "Measurement position" (moved in / active).
This could be one of the main problems that we had much lesser ion beam intensity since the UNILAC and SIS18 failures last night. |
|
Tue Apr 5 11:14:52 2022, Sebastian, Kristian, Pierre-Michel, DAQ, PMT over wavelength histogram v2
|
Today we finalized the PMT over wavelength histogram in:
Analysis/Histograms/Step2_Anl/LabView/laserscan
Currently the histogram shows the PMT middle signal on the y axis.
Remark: Tomorrow we create this kind of histogram for all PMTs. |
|
Tue Apr 5 15:25:47 2022, Sebastian, Kristian, Pierre-Michel, DAQ, Go4 Conditions for "TDC_stacked_Sig/Ref" histogram
|
First version of TDC_stacked histograms implemented.
Under folder "Conditions" you can now integrate over user defined Limits (Xmin and Xmax). |
|
Mon Apr 11 11:05:35 2022, Sebastian, Kristian, Laser, Check laser power
|
we checked the UV laser power at 10:15 am. It was only 8.5 - 9 mJ. Pumping power was 460 mJ, which is the maximum output of the current system. We should change the flashlamps soon |
|
Mon Apr 4 15:27:31 2022, Sebastian, DAQ, PMT over wavelength histogram
|
Kristian and I tried to create a "PMT over wavelength" histogram under step2Anl/LabView.
Unfortunately, the code ist still in progress and does not work yet.
The current code can be found in the TldaAnlProc.cxx |
|
Thu Apr 7 09:23:18 2022, Sebastian, DAQ, DAQ1 & DAQ2 - 1kHz and delayed cs removed
|
Questionable 1kHz and delayed common stop signals has been removed.
These two cablings were for some previous tests. |
|
Fri Apr 8 08:17:52 2022, Sebastian, Laser, Laser Ext Trig is working
|
We (Max, Kristian, Danyal, me) fixed the "external trigger" problem.
1.) The delay between lamp sync and Q-switch trigger was too long. The delay must be 200µs (3rd picture)!
2.) The settings from the left Dual Timer (upper and lower part) in the ESR Laser Lab (above QuantaRay laser) were wrong and are now adjusted. Settings are depicted in the attached photos (1st and 2nd pic).
4th picture shows the pulse train of the pump laser. |
|
Fri Apr 8 08:40:06 2022, Sebastian, DAQ, DAQ improvement
|
Concerning ID 146 a new histogram for accumulating data (no cleaning histograms) can be found under
Step2_Anl/TDC/TDC***_accumulated_*** |
|
Thu Apr 14 12:38:38 2022, Sebastian, Detectors, XUV / Cu checkups
|
Check regularly if the connection to the XUV and Cu detectors are still active and the detectors move in (after injection) and out (after killing the ion beam).
Therefore, 2 programs should run on the computer where you can also see the running Schottky.
One of the programs is for the XUV and one is for the Cu mirror.
There the Automisation button should be activated!!!
ID 30 contains the manual how to run / start and operate both detectors. |
|
Thu Apr 14 19:46:46 2022, Sarper & Konstantin & Rodolfo, Laser, Laser power
|
We checked the laser power before starting the new scan range.
- Seed energy before Cobra @ 532 nm: 513 mJ (before 499 mJ).
- New correction factor for Monitor: 71.25.
- UV output energy after SHG @ 320.1 nm: 11 mJ
All values are averaged over 500 laser pulses. |
|
Sun Apr 3 12:31:10 2022, Rui-Jiu Chen, Yuri, Carsten, Ragan, Runs, Measurement of beam with different circles 6x
|
Parameters of NTCAP:
1. IQ rate 20 MSamples/s
2. Carrier frequency: 245 MHz
3. RF attenuation(dB): 40
4. IF attenuation(dB): 19.9288
Data files:
Samples/record: 2^18=262144
Records/File:2^12=4096
Masterpath:
p:/E142/iq
p:/E142/sc
1. Manipulation 1:
(ESR EXP22 02 238U92 Brandau 30March22.C1.3 WAIT FOR MANIP BY. OF O)
Data A: IQ_2022-04-03_11-37-01, SC_2022-04-03_11-37-01
Data B: IQ_2022-04-03_11-46-54, SC_2022-04-03_11-47-04
2. Manipulation 2:
(ESR EXXP22 02.23U92 Brandau SOMarch22.CIS WAIT FOR MANI BY OP O )
Data A: IQ_2022-04-03_11-56-17, SC_2022-04-03_11-56-17 (Reference level 0dBm)
Data B: IQ_2022-04-03_12-03-27, SC_2022-04-03_12-03-27 (Reference level 0dBm)
Data C: IQ_2022-04-03_12-58-00, SC_2022-04-03_12-58-00 (Reference level -25dBm, record data
for long time.)\
3. Manipulation 3:
(ESR EXP22 02 23AUS2 Branda3OMarch22C1.7 WAIT FOR MANIP BY OP)
Data A: IQ_2022-04-03_12-11-11, SC_2022-04-03_12-11-11 (Reference level 0dBm)
Data B: IQ_2022-04-03_12-18-49, SC_2022-04-03_12-18-49 (Reference level 0dBm)
4. Manipulation 1+2+3. Measuring two injections.
Data A: IQ_2022-04-03_12-26-47, SC_2022-04-03_12-26-47(REFERENCEL LEVEL 0dBm)
Data B: IQ_2022-04-03_12-26-55, SC_2022-04-03_12-26-55(Reference level -25dBm)
Preliminary result: comparison between manipulation (MP) 1,2,3 and full manipulation
|
|
Sat Apr 2 10:22:21 2022, Rui-Jiu Chen, Ragan, General, Beam is in the ESR
|
Primary beam is in the ESR now. Markus and the team are tuning the ESR. |
|
Fri Apr 1 11:00:41 2022, Rui-Jiu Chen, DAQ, Start NTCAP
|
Start taking data with NTCAP.
Carrier Frequency: 245MHz
IQ rate:5 MSamples/s
Reference level -0 dBm.
RF - Attenuation:40 dB
IF attenuation: 19.9288 dB
Date Files:
Samples/Record:2^18=262144
Records/File:2^12=4096
Masterpath: p:\E142\iq\IQ_2022-03-30_09-39-26
p:\E142\sc\SC_2022-03-30_09-39-26
Free space: o diver: 34.9TB. p driver: 34.8TB. |
|
Fri Apr 1 11:19:57 2022, Rui-Jiu Chen, DAQ, S.M.A.R.T check on NTCAP
|
S.M.A.R.T. check has been done on NTCAP on March 28th. All 12 hard disk drivers are normal. |
|
Mon Apr 11 18:46:31 2022, Rodolfo, Sarper and Konstantin, Laser, Alignment-check
|
We cross-checked the laser-ion alignment. The horizontal position was optimized. However,
since the laser beam is much larger than the ion beam, this was not an issue for measurements, which
have been performed during the last shifts.
The modified parameters of the stabilization system are attached. |
|
Wed Apr 13 15:41:29 2022, Rodolfo & Sarper, Laser, Laser status
|
We have checked the power of the laser and optimized it "a bit".
- Seed energy for the Cobra @ 532 nm: 508 mJ (before 496 mJ)*
- New correction factor for the Monitor: 43.
- UV energy after the SHG @ 321.1 nm: 11.6 mJ*
*Average over 500 pulses. |