DRAFT LARP Phase II Secondary Collimator RC-1 Collimator

DRAFT LARP Phase II Secondary Collimator RC-1 Collimator Development Status and Outlook Revised 08/24/09 LARP LHC PHASE II COLL RC 1 - S. Lundgren 24 Aug 2009 No /7

Outline • Overview of SLAC design • Fabrication update • Outlook LARP LHC PHASE II COLL RC 1 - S. Lundgren 24 Aug 2009 No /7

SLAC design Existing RC-0 Jaw Ratchet Gear Drive RC-1 Jaw under const. LHC IR 7 Style BPM Buttons Ratchet Drive mounts here Ferrite could mount to Base Plate facing Jaw facet BPM assemblies at each end are fiducialized to Collimator Tank geometry allows a 60 mm facet-to-facet gap in fully retracted Jaw position LARP LHC PHASE II COLL RC 1 - S. Lundgren 24 Aug 2009 No /7 Flex Support (4 are due mid Sept)

Fabrication status Thru the bore twist test Moly gear drive parts in house Glidcop for 3 more Jaws in house Flex Support Assy parts due mid September Inspecting the finished winding before adding the braze alloy LARP LHC PHASE II COLL RC 1 - S. Lundgren 24 Aug 2009 No /7 Tank dwgs complete early September

Outlook • • Draft plans written for SLAC bench testing and possible SPS test Long term life-cycle testing of Ratchet drive (in a vacuum) starts soon Some parts for 2 additional Jaws have already been produced More details at next meeting Gear Drive inside vacuum tank Luisella is not LARP LHC PHASE II COLL RC 1 - S. Lundgren 24 Aug 2009 Remaining 4 Half Shafts are now in house (2 shown) No /7