DRAFT Technical Proposal for Decommissioning the LHO Mid-Station Cryopumps

Document #:

LIGO-T1400652-v1

Document type:

T - Technical notes

Abstract:

For the Advanced LIGO Project, the mid-station BSC chambers at LHO were moved to the end-stations. Since there are no longer any chambers and interferometer elements in the LHO mid-stations, it is reasonable to consider decommissioning the mid-station cryopumps. There are 2 pumps in each mid-station at LHO. This would reduce the cost of LN2 consumption. However there are a number of risks which must be addressed and a work plan is needed.
The purpose of this memo is to submit a definitive proposal to the Vacuum Review Board (VRB) for consideration, prior to pursuing an Engineering Change Request (ECR).

Files in Document:

• T1400652-v1 VRB on LHO mid-station cryopump decommissi...pdf (1.1 MB)

Other Files:

• T1400652-v1 VRB on LHO mid-station cryopump decommiss...docx (1.7 MB)

Topics:

• Proposals
• Vacuum
• Technical Review Board

Authors:

• Dennis Coyne

Notes and Changes:

rough draft

Related Documents:

Referenced by: