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40m
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| 40m Log |
Not logged in |
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 Tue Jul 17 12:55:45 2018, Koji, Summary, General, Started pumping 6x
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 Tue Jul 17 18:16:38 2018, Steve, Summary, VAC, pumpdown 81 at 6 hrs 6x
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Tue Jul 17 22:25:41 2018, Koji, Summary, VAC, pumpdown 81 at 6 hrs
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Wed Jul 18 12:49:08 2018, Steve, Summary, VAC, pumpdown 81 at 6 +4.5hrs
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Wed Jul 18 17:36:50 2018, Steve, Summary, VAC, pumpdown 81 at 6 +9 hrs completed
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Thu Jul 19 01:56:25 2018, gautam, Summary, VAC, AUX pump shutdown
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Thu Jul 19 11:01:03 2018, Steve, Summary, VAC, pd81 @ 2e-5 Torr
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Thu Jul 19 13:35:30 2018, Steve, Summary, VAC, annuloses pumped
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Mon Jul 23 09:58:52 2018, Steve, Summary, VAC, RGA scan at day 6
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Mon Aug 6 09:34:02 2018, Steve, Update, VAC, RGA scan at day 20
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Thu Aug 16 07:50:28 2018, Steve, Update, VAC, pumpdown 81 at day 30
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Thu Aug 16 14:48:14 2018, Steve, Update, VAC, why do we need a root pump? 6x
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Fri Nov 16 10:26:12 2018, Steve, Update, VAC, single viton O-rings
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Fri Aug 24 10:51:23 2018, Steve, Update, VAC, pumpdown 81 at day 38
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Thu Oct 4 08:25:50 2018, Steve, Update, VAC, rga scan pd81 at day 78
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Fri Oct 12 08:27:05 2018, Steve, Update, VAC, drypump
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Fri Oct 12 17:37:03 2018, Steve, Update, VAC, pressure gauge choices
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Mon Oct 15 13:59:42 2018, Steve, Update, VAC, drypump replaced
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Tue Nov 13 16:15:01 2018, Steve, Update, VAC, rga scan pd81 at day 119
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Message ID: 14247
Entry time: Fri Oct 12 17:37:03 2018
In reply to: 14244
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| Author: |
Steve |
| Type: |
Update |
| Category: |
VAC |
| Subject: |
pressure gauge choices |
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We want to measure the pressure gradient in the 40m IFO
Our old MKS cold cathodes are out of order. The existing working gauge at the pumpspool is InstruTech CCM501
The plan is to purchase 3 new gauges for ETMY, BS and MC2 location.
Basic cold cathode or Bayard-Alpert Pirani
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