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New entries since:Thu Jan 1 01:00:00 1970
ID Date Author Status Type Category Location Title Text Attachments
  364   Tue Sep 17 12:48:13 2024 Ronic ChicheFixedinfomechanicsThomX iglooFinding correct motors position and parameters to keep the lock during a movethis morning with Daniele, we did a quite
long run with this motor position and it
seems we don't lose the lock too much.
  
  363   Mon Sep 16 12:03:30 2024 Ronic ChicheFixedinfomechanicsThomX iglooFinding correct motors position and parameters to keep the lock during a movethis morning, I try
to find a new region for MOT.03 and MOT.06
where we can move them without unlocking
  
  362   Mon Sep 9 11:00:43 2024 Ronic ChicheFixedinfolasers and optics | detectors and electronics | softwareThomX igloorestarting CFP system after the long summer shutdown (RF section conditionning) and Alphanov amplifier issuethis morning, with Vincent :

- we added the 10Hz trigger to
the CH2 on the remote scope (192.168.229.21)
  
  361   Fri Sep 6 17:27:20 2024 Ronic ChicheUnder Processissuemechanics | lasers and optics | detectors and electronicsThomX igloo20Hz oscillation in the locking between Laser and FP-cavitycould it be possible this 20Hz oscillations
comes from anouncements in the bunker, puting
the housing+table in vibration ?
  
  360   Fri Sep 6 17:21:51 2024 Ronic ChicheFixedinfolasers and optics | detectors and electronics | softwareThomX igloorestarting CFP system after the long summer shutdown (RF section conditionning) and Alphanov amplifier issueI changed a little bit the locking parameters
(see picture) for the RF/FPC loop and it
locked rapidely.
 20240906_161926.jpg 
  359   Fri Sep 6 15:20:20 2024 Ronic ChicheFixedinfolasers and optics | detectors and electronics | softwareThomX igloorestarting CFP system after the long summer shutdown (RF section conditionning) and Alphanov amplifier issuenow, the Ring RF frequency is set to 500.067MHz.

so the CFP/laser frequency should
be 500.067MHz/15 = 33.3378MHz.
  
  358   Fri Sep 6 12:10:51 2024 Ronic ChicheFixedinfolasers and optics | detectors and electronics | softwareThomX igloorestarting CFP system after the long summer shutdown (RF section conditionning) and Alphanov amplifier issueafter redoing the alignment of the CVBG,
we got back the initial power in the FPC
(87kW)
  
  357   Fri Sep 6 11:56:53 2024 Ronic ChicheFixedissuelasers and optics | detectors and electronicsThomX igloofixing CVBG issuethis morning with Daniele, we realigned
the amplifier beam axis on the iris position.
it was pretty fast an easy => we
 20240906_151100.jpg 
  356   Thu Sep 5 09:53:10 2024 Ronic ChicheFixedissuelasers and optics | detectors and electronicsThomX igloofixing CVBG issue1) this morning, I aligned to CFP to get
back 82kW in the cavity for 33% of amplifier
ratio.
 12x 
  355   Thu Sep 5 09:51:22 2024 Ronic ChicheFixedissuelasers and optics | detectors and electronicsThomX igloofixing CVBG issuethe CVBG of the compressor module seems
to have an issue.

here is the plan of the work :
  
  354   Fri Aug 30 17:59:01 2024 Ronic ChicheFixedinfolasers and optics | detectors and electronics | softwareThomX igloorestarting CFP system after the long summer shutdown (RF section conditionning) and Alphanov amplifier issueamplifier power measurement before the
compressor CVBG.
we used a mirror in between the amplifier
  
  353   Fri Aug 30 12:05:38 2024 Ronic ChicheFixedinfolasers and optics | detectors and electronics | softwareThomX igloorestarting CFP system after the long summer shutdown (RF section conditionning) and Alphanov amplifier issueAfter the summer power shutdown, I restarted
all the equipements and got quickly ~80kW
for 33% amplifier ratio with CEP optimization
  
  352   Fri Aug 30 10:50:45 2024 Ronic ChicheFixedinfolasers and optics | detectors and electronics | softwareThomX igloorestarting CFP system after the long summer shutdown (RF section conditionning) and Alphanov amplifier issuethis morning with Daniele, we are measuring
the amplifier power just before the FP-cavity.
Casemate temperature @19.5°C
  
  351   Tue Aug 27 12:31:19 2024 Ronic ChicheFixedinfolasers and optics | detectors and electronics | softwareThomX igloorestarting CFP system after the long summer shutdown (RF section conditionning) and Alphanov amplifier issueafter doing some alignment (walking procedure
on the Y axis), and CEP optimization, I got
83kW for 33% on the laser amplifier with
 Capture.JPG 
  350   Tue Aug 27 11:33:24 2024 Ronic ChicheFixedinfolasers and optics | detectors and electronics | softwareThomX igloorestarting CFP system after the long summer shutdown (RF section conditionning) and Alphanov amplifier issuewe had to move the laser cavity motor to
find the resonances and change a lot the
CEP.
 Sans_titre.png 
  349   Tue Aug 27 10:19:08 2024 Ronic ChicheFixedinfolasers and optics | detectors and electronics | softwareThomX igloorestarting CFP system after the long summer shutdown (RF section conditionning) and Alphanov amplifier issueI refilled the chiller and the stabilized
temperature is @ 25°C

we started the 3rd stage of the
 Capture.JPG 
  348   Tue Aug 27 09:59:18 2024 Ronic ChicheFixedinfolasers and optics | detectors and electronics | softwareThomX igloorestarting CFP system after the long summer shutdown (RF section conditionning) and Alphanov amplifier issuetemperature in the casemate ~ 19.5°C
stable

this morning, I measured the power
 Capture.JPGCapture2.JPG 
  347   Tue Jul 23 09:37:24 2024 Ronic ChicheFixedissuelasers and opticsThomX iglooAlphanov amplifier issuepicture of the connectors used to carry
signals between the amplifier pump module
and the rack under the table.
 connecteur_laser_head_sur_module_pompes_ampli.jpgconnecteur_laser_head_sur_chassis_ampli.jpg 
  346   Mon Jul 22 09:54:24 2024 Ronic ChicheFixedissuelasers and opticsThomX iglooAlphanov amplifier issueGuillaume and Julien Bour from Alphanov
will come on wednesday 24/07 to have a first
look and check the amplifier.
  
  345   Wed Jun 19 09:14:14 2024 Ronic ChicheFixedissuelasers and opticsThomX iglooAlphanov amplifier issuethe present situation is :

Guillaume asked me to disconnect
the "Laser head" cable from the
  
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