| ID |
Date |
Author |
Category |
Subject |
|
13
|
Thu Mar 3 17:34:42 2022 |
Rodolfo | Laser | Pump Laser |
We have issues with our Pump Laser (Spectra Physics - Quanta Ray Pro). After the service made on mid Dezember (2021) the laser does not get started. After contacting the service many times, the technicians think it can be an issue with the flashlamps.
- Flashlamps installed technician on 15.12.2021: FAILED.
- Flashlamps installed by Rodolfo on 21.01.2022: FAILED.
- Flashlamps installed by Rodolfo on 08.02.2022: WORK, however
the power is dropping extremelly fast. The measured power on 08.02.2022 was 21.6 W. On 01.03.2022 we measured 17,8 W (for 2.7 Millon shots). The flashlamps should stand 30 Millon shots without losing too much power. |
|
12
|
Thu Mar 3 17:21:26 2022 |
Rodolfo | Detectors | MgF2 Windows |
| New reentrance viewports made of MgF2 have been installed at the ESR "Optical Detection Region". In the middle the old window (also MgF2) was kept into place. |
|
11
|
Thu Mar 3 13:50:45 2022 |
Rodolfo | Laser | Dye cell cracket |
| The "20 mm" dye cell used for the Oscillator and Pramplifier got damage. I supposed it was produced by the pump beam hitting on a very "old" dye solution (DCM / Ethanol, concentration 0,3 g/l). The solution in the dye reservoir was more 12 months old. |
|
10
|
Fri Nov 19 15:50:44 2021 |
Rodolfo | Accelerator | Laser windows at E-Cooler side |
New laser viewports have been installed at the E-Cooler side of the ESR.
 |
|
9
|
Fri Nov 5 17:23:23 2021 |
Rodolfo | DAQ | Dye trigger out |
The dye laser offers different scan settings (see pages 65 - 67 of the user manual). We are using the following setting, see attached screenshot, to produce the status "laser busy" for the DAQ.
This Output Trigger CH1 is then strobed coincidence with the 1 MHz clock. |
|
8
|
Thu Oct 14 10:21:46 2021 |
Rodolfo | Detectors | Dismounting Cu-Mirror |
We have dismounted the parabolic Cu-Mirror at ESR on 13.10.2021 |
|
Draft
|
Wed Sep 8 21:44:55 2021 |
Rodolfo | General | Preparation |
|
Status | Arbeitspaket | Kommentare
| |
| Laser und Laserlabor |
| |
*** | Farbstofflaser | Elektronik wurde erneut.
|
|
|
6
|
Fri Aug 6 10:40:54 2021 |
Rodolfo | DAQ | mbs in atplaser |
The "MBS program" (data acquisition) is now located within atplaser@r4l-41, in the folder "th21":
R4L-41 atplaser > pwd
/esr/usr/atplaser/mbsrun/th21
R4L-41 atplaser > ls -l
total 412
-rw-r--r-- 1 atplaser esr 3326 Jul 21 13:42 #Makefile#
-rw-r--r-- 1 atplaser esr 18675 Jul 19 10:43 #f_user.c.lc21wlv#
-rwxr--r-- 1 atplaser esr 3324 Jul 21 13:17 Makefile
-rw-r--r-- 1 atplaser esr 2803 Jul 13 10:59 Makefile.lynx
-rw-r--r-- 1 atplaser esr 3324 Jul 13 10:59 Makefile.test
drwxr-xr-x 2 atplaser esr 4096 Jul 13 10:59 dump
-rw-r--r-- 1 atplaser esr 8032 Aug 2 13:06 f_user.c
-rw-r--r-- 1 atplaser esr 18673 Jul 14 10:39 f_user.c.lc21wlv
-rw-r--r-- 1 atplaser esr 6368 Jul 21 11:01 f_user.c.lynx
-rwxr--r-- 1 atplaser esr 18843 Jul 23 11:09 f_user_wlvc.c
-rw-r--r-- 1 atplaser esr 49 Jul 13 10:59 filenum.set
-rw-r--r-- 1 atplaser esr 8181 Jul 13 10:59 include
-rwxr-xr-x 1 atplaser esr 162908 Aug 2 13:07 m_read_meb
-rw-rw-rw- 1 atplaser esr 81056 Aug 5 19:07 mbslog.l
drwxr-xr-x 2 atplaser esr 4096 Jul 13 10:59 scom
-rw-r--r-- 1 atplaser esr 13154 Jul 13 10:59 setup.usf
-rw-r--r-- 1 atplaser esr 94 Jul 13 10:59 shutdown.scom
-rw-r--r-- 1 atplaser esr 320 Jul 13 10:59 st.scom
-rw-r--r-- 1 atplaser esr 290 Jul 22 15:23 startup.scom
-rw-r--r-- 1 atplaser esr 525 Jul 13 10:59 startup.scom.lynx
drwxr-xr-x 2 atplaser esr 4096 Jul 13 10:59 suha
-rw-r--r-- 1 atplaser esr 18999 Jul 13 10:59 vuprom_tdc_v5.h
Note: This MBS-Version was used previously by Sebastian in "laser cooling 21". |
|
5
|
Fri Aug 6 10:23:00 2021 |
Rodolfo | DAQ | atplaser on r4l-41 |
The user atplaser is now existing on the R4L-XY nodes for the ESR group.
R4 = RIO4 Computer
L = Linux
XY = node number.
The laser experiments are using the node XY = 41, which is located in the ESR Messhütte. From a Linux terminal one can access this node by using
$ ssh atplaser@r4l-41 |
|
4
|
Mon Aug 2 10:54:44 2021 |
Rodolfo | Laser | Quanta Ray - Water leak in the power supply |
After fixing the broken water connector in the laser head a new water leak appeared in the Quanta-Ray power supply.
We found the leak in the water pump flow line (arrow up). We took the water connectors appart, rebuilt the teflon seeling and put the water connectors back again.
Laser is back in operation. |
|
3
|
Wed Jul 28 13:31:22 2021 |
Rodolfo | General | Air filters |
| Filters (Hepa-) inside the flow boxes have been replaced. |
|
2
|
Mon Jul 26 17:58:52 2021 |
Rodolfo | Laser | Water Filters |
| The water filters (deioninzing and particle) have been replaced. |
|
1
|
Mon Jul 26 17:15:47 2021 |
Rodolfo | Laser | Quanta Ray - Water leak |
On Thursday afternoon (22.07.2021) a water connector has broken and water has been spilled in the laser head. |