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Laser Cooling Experiment 2021, Page 1 of 5  Not logged in

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ID Date Author Category Subject Text   19   Wed May 12 10:15:47 2021 Volker Hannen DAQ Unplugged TDC inputs for MCP front and back To reduce the load on the VUPROM TDC, we unplugged the TDC inputs for the front and back signals of the MCP of the XUV detector.      45   Fri May 14 04:50:46 2021 Team #Night General Scraper Tests Ion / Laser Beam laser is 4-6mm below the ion beam. It could be that the interaction between both beams came only from the interaction      46   Fri May 14 06:34:45 2021 Team #Night Analysis DSG821 IP 140.181.104.108      47   Fri May 14 06:35:55 2021 Team #Night General Adjustment of Laser we increased the height of the laser beam TEM Settings      48   Fri May 14 07:20:18 2021 Team #Night General actual bunching frequency 25,82556 MHz h = 20      Draft   Fri May 14 07:33:42 2021 Team #Night General ecooler central frequency shifted relative to bunch central frequency        44   Fri May 14 01:34:44 2021 Team General strange XUV Anode signal We see a strange behavior of the anode signal when we bunch the ion beam and electron cooler is on.      59   Fri May 14 22:04:25 2021 Team Accelerator ESR OPEN ; NO BEAM -> Reset cooling device we had to open the ESR to reset a cooling device      60   Fri May 14 22:20:37 2021 Team Accelerator ESR Closed - BEAM #ON!        61   Sat May 15 03:39:16 2021 Team General actual revolution frequency frev = 1,2912735 MHz      65   Sat May 15 09:50:31 2021 Team Runs Laser cooling of.... H=2 H=7 H=10      73   Sun May 16 02:28:21 2021 Team General #Beam ON! Laser specs: pulse length -> 482ps      74   Sun May 16 05:09:04 2021 Team General Laser cooling with 482ps we see laser cooling with 482ps pulse length      75   Sun May 16 05:09:27 2021 Team General Switch to 285ps pulse length -> 285ps minimum 62mW inside ESR (depending on laser      76   Sun May 16 05:24:00 2021 Team General Laser cooling with 285ps we also see laser cooling with 285ps pulse length      77   Sun May 16 06:13:46 2021 Team General Switch to 166ps        78   Sun May 16 07:03:07 2021 Team General Laser cooling with 166ps We saw some indications of laser cooling @ 166ps pulse length      81   Sun May 16 21:23:02 2021 Team General ESR OPEN -> preparation for Polarisation Tests        82   Sun May 16 22:11:49 2021 Team General Laser Polarisation values maximal transmission of PBSC (257/514 pbsc was used in combination with xlp12 detector and visual on a screen):      83   Mon May 17 08:05:42 2021 Team General End of beamtime ~ 8 a.m.

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