Upgrade/RFFoil

Communication

• This wiki: https://wiki.nikhef.nl/lhcb/Upgrade/RFFoil
• ELOG: https://webapps.nikhef.nl/elog/VELO_Upgrade_RFBox/
• Massi's twiki on foil thinning: https://lbtwiki.cern.ch/bin/view/VELO/FoilThinning
• photographs:
  • http://www.nikhef.nl/pub/departments/mt/projects/lhcb-vertex/production/UpgradeRFbox/
  • http://www.nikhef.nl/pub/departments/mt/projects/lhcb-vertex/production/UpgradeRFbox/Willem

Planning

Link to project plan: [project plan]

Rough timeline:

• R&D/prototyping 2014-2016
• Production 2017-2018
• Installation 2019

OPP reports: [2014/02/04], [2014/04/15], [2014/07/04], [2014/09/16], [2014/10/21], [2014/12/02]

People

• Willem Kuilman
• Johan Kos
• Berend Munneke
• Krista de Roo
• Erno Roeland
• Martin Doets
• Rob Walet
• Tjeerd Ketel
• Wouter Hulsbergen

3D model, drawings

The CATIA model and stp files for the RF box can be found on Martin's webpage:

http://www.nikhef.nl/~martind/Velo%20boxes/

Requirements

File:Requirements.pdf is the information given to external partners.

Information on materials

• AlMg3
• AlMg4.5
• See this link for [Wood's metal

Machining

• File:AfnameRapport DMF260-11.pdf Specification of Nikhef's DMF260-11 by the manufacturer

• File:Mul Milling vs Turning.pdf is an old presentation by Frans Mul. The interesting conclusion is that 'turning' leads to a leaking foil, while 'milling' does not.

Fixing leaks

• File:VDL Rapportage lasproeven aluminium.pdf Report by VDL (Dec 2014)

NEG coating

• File:Mul NEGcoating2005.pdf Presentation by Frans Mul on application of NEG coating at CERN

Vacuum measurements

• Dye penetrant inspection
  • Information provided by Gonzalo ARNAU IZQUIERDO (materials engineer at EN/MME,CERN)
    • https://www.nde-ed.org/EducationResources/CommunityCollege/PenetrantTest/PTMaterials/ptmaterials.htm
    • http://en.wikipedia.org/wiki/Fluorescent_penetrant_inspection
  • Measurements were done by EN-MME Alexandre Gerardin:
    • https://edms.cern.ch/document/1409244/
    • https://lbtwiki.cern.ch/pub/VELO/FoilThinning/Metallurgy_report_1409244.pdf

Presentations

This is a very small subset!

• 2015/02/05: [[1] W. Hulsbergen, CERN RF box workshop]

• 2012/03/08: File:PhotosLeakMilledFoil TjeerdKetel 20120308.pdf T. Ketel, SEM-EDS analysis of leak in VU-MC Box 1

Activities/milestones reached

• 2015/10/29: Vacuum tests show the box is vacuum tight: https://webapps.nikhef.nl/elog/VELO_Upgrade_RFBox/8
• 2015/10/01: Milling now completely finished!
• 2015/09/17: Milling of outside is finished, apart from side that has wakefield connectors
  • photos taken by Tjeerd: http://www.nikhef.nl/pub/experiments/bfys/lhcb/vertex/documents/minutes/2015/documents/photohb2.pdf
• 2015/09/03: Mold positioned inside box and space filled with wax
• 2015/08/20: Inside milling finished
  • metrology report: http://www.nikhef.nl/pub/experiments/bfys/lhcb/vertex/documents/minutes/2015/documents/HalfboxA.pdf
  • photos taken by Tjeerd: http://www.nikhef.nl/pub/experiments/bfys/lhcb/vertex/documents/minutes/2015/documents/photohb.pdf
• 2015/07/04: Pressure cycling tests of edged foil, see http://www.nikhef.nl/pub/experiments/bfys/lhcb/vertex/documents/minutes/2015/documents/cycletest4.pdf
• 2015/06/11: Heating box (for heating foil/mold when filling with wax) finished and tested
• 2015/04/16: Outside milled to +1 cm. This is how it will stay until inside is finished
• 2015/03/19: Mold finished
• 2014/12: Started milling of the mold
• 2014/10/20: Three drums with 0.1 micron holes sent to VDL (see ELOG)
• 2014/10/20: Received 1kg of Field's metal and 1kg of cerrolow 136 from Lowden Limited
• 2014/10/02: Machining of 5 drums ready (4 of 250 mu thickness, 1 of 150 mu thickness, all without leaks)

Action items

• arrange a room for Willem (2014/09/18)