ELOG CARME

AIDA GELINA BRIKEN nToF CRIB ISOLDE CIRCE nTOFCapture DESPEC DTAS EDI_PSA 179Ta CARME StellarModelling DCF K40

CARME

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Entry time:	Fri Mar 28 20:49:47 2025
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> 5 OCTOBER > > 08:21 Temperatures stable overnight. See attached. Baking continues. > Remember to visually inspect the tent for potential new drafts the next time in Daresbury. > Also remember to check on thermocouple 1-4 status / position. > > 10:15 Draft caused by section of top blanket collapsing slightly producing a hole at the top-back end of the volume. Only way to remove draft is to power down and shift > some of the larger blanket sections over to support the collapsed bit. Keith requires temperatures >120C for the vessel average to proceed so heat was powered down and > jacket reconstructed. See attached photos of the top of the baking volume (Sorry for quality). > > Pressure on vessel when baking concluded: 2e-7mbar > > 13:00 Baking jacket all sorted, temperature set to 60C to equilibrate. New session had to be started as cooling then heating confuses the rates on the baking program. All > looks good at the moment, will continue to monitor and increase temperature when needed. Automatic mode may be able to be utilised again as rectifying the insulation on > the > back has reduced the thermal gradients somewhat. > > Pressure on vessel when baking restarted: 1e-8 mbar > Bumax order has also been delivered > > 16:00 Monitoring remotely, bakeout has been on automatic for an hour and is currently at 67C. Vessel gradient ~7.5C > > 17:15 All looks okay, will leave for a few hours now. Temp is 73C, gradient ~8.2C > > 22:00 Automatic baking to 90C gradient >10C. Ramped to 105C for RE72-1 and 100C for RE72-2. Will leave overnight to stabilise > > 6 October > > 9:50 Temperatures stable, increasing to 115C, 105C > > 11:20 Temperatures stable, Increasing to 120C, 115C > > 13:15 Temperatures stable, increasing to 125C, 120C. Vessel average ~115C. > > 14:45 Temperatures stable (see attached). Increasing to 130C, 125C. Vessel average~120C > > 20:16 Temperatures stable, may be getting to edge of how hot we can get. Increasing to 135C, 130C overnight. Vessel average~128C should be sufficient. > > 7 October > > 07:30 Temperatures stable, have reached max temperature we can achieve 132C, 128C on RE-72 thermocouples. Vessel average~131C should be sufficient. Temperatures will be > maintained until Monday when negs can be activated. > > 20:30 Temperatures stable (see attached) > > 8 October > > 10:30 Temperatures stable > > 9 October > > 8:30 Temoeratures remain stable Encoding: HTML ELCode plain Suppress Email notification

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