40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
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New entries since:Wed Dec 31 16:00:00 1969
ID Dateup Author Type Category Subject
  251   Wed May 11 19:46:21 2022 Aidan, Radhika, JordanLab InfrastructureVacuum chamberLeak cleaning on IR labs vacuum chamber - suspects

[Aidan, Jordan, Radhika]

Radhika and Jordan identified some particulates (hair and flecks of foil) on the O-ring on the IR labs dewer. Additionally, we saw a scratch in the O-ring groove and a nick on the metal of the base of the dewer where it meets the O-ring. All were in the leaky vicinity previously identified by the He testing.

We set up a cradle to hold the dewer while we are working on it. Still needs vertical supports.

R & J replaced the O-ring with a new one with Crytox applied. 

  252   Fri May 20 16:42:47 2022 StephenThings to BuyOrderingUp to Air valve for IR Labs Cryostat

Purchased from Lesker, for venting of IR Labs Cryostat:

 - P/N C35103000 (KF10 Valve for up-to-air)

 - P/N QF25XQF10 (KF25-KF10 Reducer)

 - P/N QF25-100-T (KF25 Tee)

(to be connected in between the Chamber Tee and the Gate Valve)

Should be in next week!

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