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LAV construction & installation status. Matthew Moulson for the LAV Working Group NA62 Photon-Veto Working Group Meeting CERN, 01 April 2014. LAV installation: Activity at CERN. A1-A8 status: HV & signal cable supports for A6-A7-A8 installed - PowerPoint PPT Presentation
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Matthew Moulson for the LAV Working GroupNA62 Photon-Veto Working Group Meeting
CERN, 01 April 2014
LAV construction & installation status
LAV construction status – M. Moulson (Frascati) – Photon Veto WG – CERN – 01 April 2014
LAV installation: Activity at CERN
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A1-A8 status:• HV & signal cable supports for A6-A7-A8 installed• Measurements taken for HV & signal cable supports for A9-A10-A11• HV recabled A1-A3, with reflected cables• HV cabled for A4-A8• Signal cables for A1-A11 with correct impedance ready• A1-A8 fully tested, about 10 bad channels
Almost certainly loose pins on connectors on vacuum side of flanges
A1-A8 installation work: 7-18 April• 2 physicists + 2 technicians• Installation of FEE boards & signal cabling• Repair and test of problematic channels
A10-A11 installation:• 15-24 May, if missing sections of blue tube finished on time• Delays due to availablity of Stycast resin for interior coating
LAV construction status – M. Moulson (Frascati) – Photon Veto WG – CERN – 01 April 2014
Cable supports for A6-A7-A8
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LAV construction status – M. Moulson (Frascati) – Photon Veto WG – CERN – 01 April 2014
A12 construction status: Fantini
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• Welds between sectors complete: rings ready for milling machine• Some problems with milling machine → small delays• Predicted delivery still 15 April – in time for A12 completion by 1 Aug
LAV construction status – M. Moulson (Frascati) – Photon Veto WG – CERN – 01 April 2014
A12 construction status: Frascati
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Block reinforcement • Completed: 263 blocks glued
Oven • Running continuously: 121 of 256 blocks processed to date
Wrapping & light-tightness testing
• Technique practiced• Blocks will not be wrapped until we are ready
for installation
Block-holding plates • Rough machining done at Pisa• Fine machining in progress at Frascati
Connecting hardware • In progress at Pisa
Laboratory & tooling • New tools for manipulation of wrapped blocks designed and manufactured
• Second cleaning stand to be made—to be used for cleaning and light testing
Shifts at Frascati • Will restart 7 April
LAV construction status – M. Moulson (Frascati) – Photon Veto WG – CERN – 01 April 2014
A12 construction status: Frascati
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263 blocks reinforced – 121 processed in oven before rewrapping
LAV construction status – M. Moulson (Frascati) – Photon Veto WG – CERN – 01 April 2014
Refinements to wrapping technique
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Attempt to speed up and simplfy wrapping procedure and minimize use of PVC tape
Use of cleaning stand to check for light leaks