lhc sync. light monitors status and plans

LHC Sync. Light Monitors Status and Plans

05 Feb 2014Emittance Meeting (~= BI-TB Jan 2014)

F.RoncaroloA.Goldblatt, G.Trad, E.Bravin, S.Mazzoni, W.Andreazza,

G.Shneider,M.Wendt, N.Chritin

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Overview

• BSRTM Design– Option A: original design with ceramic pieces– Option B (BASELINE): Longer mirror, support behind RF screen, all metal

• Optics– Low wavelength optics– Interferometer (B1 only)

• New calibration line (B1 only)• Change tank support from ‘chair’ to 3 pillars (B1 only?)• New light shielding

• SW– New functionalities to cope with new optics layout– Filter wheels pneumatic IN-OUT– Interferometer– Possible request of tomography meas. (ABP) fastest and synchronized

camera acquisition• Discussion on Digital Cameras

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New Calibration Line BSRTR B1

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New Calibration Line BSRTR B1

ECR circulatingSystem (BSRTR = BTVSI modified) in productionexpected delivery: MarchScheduled installation: March

Components outside vacuum to be ordered, not critical, will be installed fall 2014

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BSRTM Option A (ceramic)

• 2 systems in fabrication• Expected delivery• Keep as backup solution

Mirror holder components (except springs)

made in ceramic

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BSRTM Option B

• BASELINE Option• ECR submitted• 2 systems in fabrication• Expected Delivery: February• Schedule

– RF tests in the LAB?– To TE-VSC for testing: 15 March– Installation: April ?

For both option A and B, see BI-TB Oct 2013 for details on RF studies

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Tank Support

• Decision: change B1 support from ‘chair’ to 3 pillars (existing) to free space on optical table

Proposal: change B2 immediately, to free space for halo monitor

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Optics Layout

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New mirrors

• 2 mirrors compatible with option B, coating visible : arrived, backup solution

• 3 mirrors with coating in the UV (down to 230nm) for option A + 3 for Option B– Expected delivery end of February– Can be the bottleneck for scheduling

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New Light Shielding

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Digital Cameras

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Summary

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https://espace.cern.ch/be-dep-bi-tb/Lists/Calendar/Attachments/840/LHC%20PROPOSAL.pptx

https://dfs.cern.ch/dfs//Departments/AB/Groups/BI/Sections/PM/Projects/LHC/BSR/Docs-Litterature-Publications/BSRTWG/2013-09-10/BSRT_WakefieldAnalysis.pptx

RF Simu (M.Wendt)