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CRY (Cryostat EX)
tomohiro.yamada - 22:52 Monday 18 November 2019 (11617) Print this report
Cryocoolers for duct shields were stopped in EX.

[Tomaru]

(I report instead of Prof.Tomaru.)

Cryocoolers for duct shields in EX were stopped at 9:50 today.

Currently, behaviours of temperature and vacuum are as shown in attached figure.

TF measuement of cryopayload should be done everyday or every 2 days to track its teperature drift.

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Comments to this report:
tatsuki.washimi - 7:11 Tuesday 19 November 2019 (11631) Print this report

During this night, the vacuum gauge at EXA was increasing exponentialy.

(currently, it's > 1e-4 Pa)

 

The temperature change in EXC booth is less than 0.1 degC.

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