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  Status of commissioning, report also here plots are reports., Page 7 of 13  Not logged in ELOG logo
ID Date Author Statusdown Type Category Location Title Text Attachments
  107   Fri Jul 8 17:09:26 2022 Manar AmerFixedreportlasers and opticsOptical roomImages of ThomX mirrors Under the microscope,

the spherical mirrors show the
deposit of metal dots on the reflecting surface
 ThomX_Spherical_Front_coating.jpgThomX_Spherical_2_Front_coating.jpgThomX_Spherical_back.jpg 
  108   Fri Jul 8 17:10:44 2022 Manar AmerFixedreportlasers and opticsOptical roomImages of ThomX mirrors Mirror images in the previous log showing
the metal deposit of the coating of the spherical
mirrors
  
  109   Fri Jul 8 17:48:48 2022 Manar AmerFixedreportlasers and optics | detectors and electronicsOptical room2 Mirror Setup @ 216.6 MHzThe cavity was realigned using irises instead
of pinholes, gave a better alignment.

The inside of the box, the spherical
 00mode.jpg00mode_diameter.jpgScreenshot_2022-07-08_0_164115.pngSlide1.JPGSlide2.JPG 
  110   Fri Jul 8 19:37:24 2022 Manar AmerFixedreportlasers and optics | detectors and electronicsOptical room2 Mirror Setup @ 216.6 MHzUpdate for Finesse measurement, The cavity
was put under vacuum ~ 1.1*10^-1 mbar

and the alignment and coupling
 Screenshot_2022-07-08_2_182405.png 
  111   Tue Jul 12 10:07:05 2022 Manar AmerFixedreportlasers and optics | detectors and electronicsOptical roomFSR change & Finesse Measurements The FSR of the 2 mirror (plan-spherical)
Cavity was adjusted from 210 MHz to reach
216.643 MHz
 00mode.jpg00mode_diameter.jpg00mode_diameter_fit.jpg 
  112   Tue Jul 12 10:19:30 2022 Manar AmerFixedreportlasers and optics | detectors and electronicsOptical roomFSR change & Finesse Measurements Yesterday evening the cavity was Vacuum
pumped up to pressure of 5.5*10^-2 and locked 

changed FSR to be 216.662 MHz and
 Screenshot_2022-07-11_1_204143.pngScreenshot_2022-07-11_0_203646.png 
  113   Tue Jul 12 14:41:55 2022 Manar AmerFixedreportlasers and optics | detectors and electronicsOptical roomFSR change & Finesse Measurements a Finesse of 30k with the present mirrors
:

T1=120 ppm ;A1=(2.6+1) ppm;
  
  114   Tue Jul 12 18:53:55 2022 Manar AmerFixedreportlasers and optics | detectors and electronicsOptical roomInstallation of D-shaped mirror / AlignmentTo prepare for the amplifier. I installed
the D-shapped mirrors after cleaning (using
aceton and ethanol) between the cavity 2
  
  115   Tue Jul 12 19:07:50 2022 Manar AmerFixedreportlasers and optics | detectors and electronics | softwareOptical roomCELIA amplifier installationThe amplifier was installed on the optical
table next to SBox table.

The CVBG that will be used for
  
  116   Fri Jul 22 17:07:32 2022 Manar AmerFixedreportlasers and optics | detectors and electronics | softwareOptical roomCELIA amplifier installation + chillerAmplifier placed next to the pulsed laser
on the table under the airflow

The output is in free space with
 WhatsApp_Image_2022-07-22_at_4.26.24_PM.jpgWhatsApp_Image_2022-07-22_at_4.26.24_PM.jpgWhatsApp_Image_2022-07-22_at_5.02.24_PM.jpg 
  117   Fri Jul 22 17:10:06 2022 Manar AmerFixedreportlasers and optics | detectors and electronicsOptical roomInstallation of D-shaped mirror / AlignmentThe D-shaped mirrors are installed properly
and not cutting the path of the beam.

The cavity has been aligned again
  
  118   Fri Jul 22 18:00:21 2022 Manar AmerFixedreportlasers and optics | detectors and electronics | softwareOptical roomAlignment / Table setup The current setup of the optical table
attached.

The cavity is aligned and the lock
 20220722_table_setup.jpg20220722_tablesetup.jpg 
  119   Fri Jul 22 18:19:13 2022 Manar AmerFixedreportlasers and optics | detectors and electronics | softwareOptical roomCVBG stretching / Fiber Injection Before injecting into the amplifier, the
pulse needs to be stretched using a CVBG,
type attached.
 7x 
  120   Fri Jul 22 18:25:31 2022 Manar AmerFixedreportlasers and optics | detectors and electronics | softwareOptical roomCELIA amplifier installation + chillerThe software to control the CELIA amplifier
is on the laptop that was placed in ThomX
bunker.
  
  121   Thu Jul 28 13:52:23 2022 Aurélien MartensFixedreportutilitiesOptical roomchiller for CELIA amplifierThe chiller of CELIA amplifier has been
moved from the corridor to the changing room
in front of PLIC. 
  
  122   Mon Aug 8 11:11:28 2022 Aurélien MartensFixedreportutilitiesOptical roomchiller for CELIA amplifiertoday, temperature of the chiller has been
set to 23°C.

measured temperature in the chiller
  
  123   Mon Aug 8 17:58:32 2022 Ronic ChicheFixedinfolasers and opticsOptical roomPulse duration measurement before and after CVBG (as a strecher)I recorded the pulse shape of the MENHIR
216MHz in its fiber injection setup.
the fiber is then connected to the
 pulse_measurement_without_and_with_CVBG.pngpulse_measurement_after_CVBG_compared_with_convolution.pngSpectrumafterCVBGzoom.png.png 
  124   Wed Aug 10 12:51:16 2022 Ronic ChicheFixedreportlasers and opticsOptical room"ThomX" CELIA Amplifier commissionningThe "ThomX" CELIA amplifier is
installed on the optical table.
I added all the rubber pieces available
  
  125   Thu Aug 11 12:11:48 2022 Ronic ChicheFixedreportlasers and opticsOptical room"ThomX" CELIA Amplifier commissionningBeam size at the amplifier output:

to make this measurement, I switched
ON only 1st and 2nd stage.
 Capture.PNGCapture2.PNG 
  126   Thu Aug 11 19:27:09 2022 Ronic ChicheFixedinfolasers and optics | detectors and electronicsOptical roomKoheras CW laser lock on FP cavityI locked the Koheras CW on the FP cavity
but the lock was pretty noisy and very difficult
to acquire.
  
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