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ID Date Author Status Type Category Location Title Text   15   Wed Oct 31 13:43:28 2018 Loïc Amoudry Fixed report lasers and optics Optical room Finesse vs power by difference between main and second resonance Measurement on 24/10/18      16   Wed Oct 31 13:44:22 2018 Loïc Amoudry Fixed report lasers and optics Optical room Finesse vs power by difference between main and second resonance Measurement on 25/10/2018      17   Wed Oct 31 13:48:58 2018 Loïc Amoudry Fixed report lasers and optics Optical room M1 transmission measurement Center of M1: I      18   Wed Oct 31 13:51:17 2018 Loïc Amoudry Fixed info lasers and optics Optical room Change of the 3 ULE mirrors by 3 spare ULE mirrors First finesse measurement 20 266, FSR 133.351 MHz under vacuum      19   Wed Oct 31 14:03:22 2018 Loïc Amoudry Fixed report lasers and optics Optical room M4 transmission measurement The kept transmission for M4 is 2.17 ppm. Which is the value measured after alignement (center of the      20   Wed Oct 31 14:04:50 2018 Loïc Amoudry Fixed report lasers and optics Optical room M4 transmission measurement Loïc      21   Wed Oct 31 14:06:17 2018 Loïc Amoudry Fixed report lasers and optics Optical room M1 transmission measurement At different positions, transmission give 194, 193, 208, 200 ppm?      22   Mon Nov 5 13:11:08 2018 Loïc Amoudry Fixed report lasers and optics Optical room First run with spare mirrors I (A)      23   Thu Nov 15 13:02:44 2018 Loïc Amoudry Fixed info lasers and optics Optical room Mirrors cleaning The new mirrors didn't give expected results. Then the 4 old mirrors have been sent to LMA on 12/11/18 for a cleaning and      24   Fri Dec 21 13:42:43 2018 Loïc Amoudry Fixed info lasers and optics Optical room Mirrors features, come back from LMA Mirrors arrived today from LMA. Their features are damaged. Photos avant ou après nettoyage,      25   Thu Jan 24 17:44:21 2019 Loïc Amoudry Fixed report lasers and optics Optical room Deposit on S-box mirrors after return from LMA Cleaning on dirty surface shows something is deposited on the surface. Cleaning displaces and removes part of the deposit.      26   Thu Jan 24 17:49:54 2019 Loïc Amoudry Fixed report lasers and optics Optical room Impacts on mirror's surface All the mirrors show impacts on there surface (some of them do not show deposit). Does it come from experiments or fabrication ?      27   Fri Feb 1 13:45:19 2019 Loïc Amoudry Fixed report lasers and optics Other AFM performed on S-BOX mirrors 29/02/19 - AFM has shown that spots on mirror's surfaces are bumps and not holes.      28   Fri Feb 1 14:04:27 2019 Loïc Amoudry Fixed info lasers and optics Other Meeting with LMA people, AFM 30/01/19 - The following powerpoint shows the results discussed with LMA people. What came out from the discussion      29   Wed Nov 13 13:15:53 2019 Loïc Amoudry Fixed report lasers and optics Other AFM+ InfraRed spectroscopy (IR spectro) has been performed AFM+ InfraRed spectroscopy (IR spectro) has been performed on 400kW S-BOX mirrors. Seems that XPS made M3 and M4 dirty,      30   Fri Dec 6 11:53:53 2019 Loïc Amoudry Fixed report lasers and optics Optical room Mirror's cleaning XPS has been proceeded on the 400kW SBOX mirrors M3 and M4 (the initial cavity spherical mirrors) in frebruary 2019. Deposited a lot      31   Fri Dec 6 11:54:58 2019 Loïc Amoudry Fixed report lasers and optics Optical room Mirror's installed The initial 400kW SBOX mirrors which have been cleaned ont 28th of november have been installed this morning on the SBOX.      46   Thu Jan 9 16:54:05 2020 Loïc Amoudry Fixed report lasers and optics Optical room Microscope and cleaning of SBOX mirrors The mirrors went in the cavity the 28th of november (We did several power up to 30kW stored and only one to 40kW then      49   Fri Jan 24 17:52:14 2020 Loïc Amoudry Fixed report lasers and optics Optical room AFM analysis of M1 AFM has been proceeded on M1 and M2. The pdf shows the first images taken with the PLIC room Leica microscope      50   Fri Jan 24 17:56:11 2020 Loïc Amoudry Fixed info lasers and optics Optical room AFM analysis of M2 We had enough time to proceed a quick scan of M2 which has also a hole but not centered on the mirror.

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