Update on Experimental Beampipe Progress Ray Veness For

Update on Experimental Beampipe Progress Ray Veness For Beampipe project team in AT/VAC and TS/MME With special thanks to: S. Calatroni, W. Cameron, D. Duarte, G. Foffano, P. Lepeule, A. Rossi, G. Schneider, B. Versolatto 26 IX 06 LEMIC Beampipe Status

Contents o o o o o 26 IX 06 ALICE Bakeout ATLAS CMS LHCb Beryllium issues VAX Gas Injection System Installation Outstanding issues o Last status report in Apr ’ 06 o Updating only on progress o o since April Chambers and supports in final stages of production and test Installation and preparation for commissioning in progress LEMIC Beampipe Status

ALICE o Central (Beryllium) pipe o NEG coated and ready for installation o Installation and bakeout shell (IBS) o complete, but… Some modifications in progress following integration testing in Torino o RB 24 (4 chambers) IBS testing in Torino o ‘Standard’ LSS chambers – being produced o One chamber to be ovalised for insertion in MBWMD o Commissioning Review o Half-day in 12/9/06 with ALICE and VAC o Detailed look at equipment required, o 26 IX 06 schedules and responsibilities Considered very useful – repeat for other experiments? LEMIC Beampipe Status

Position and quantity of bakeout racks 3 m 9 m li cab ling ng ? 32 A supply? Bakeout racks Total 4 to 5 bakeout racks with 24 channels required 26 IX 06 8 m cabling 12 m cabling Central beampipe Patch pannel LEMIC Beampipe Status

RB 26 cabling Câbles bakeout Slide by Ch. Le Galliard 26 IX 06 LEMIC Beampipe Status

Bakeout (General) o Permanent bakeout 18 m pumping groups for CMS o All chambers in ATLAS, plus ALICE o RB 26 and part of LHCb UX 85 -4 have wrapped insulation Pumping groups at extremities of all experiments and Q 1 zone will have permanently installed jackets and thermocouples o Removable bakeout o CMS and ALICE central chambers have specially developed insertable ‘bakeout ovens’ o 26 IX 06 on rails All other chambers have jackets installed just for commissioning o o Decision taken to procure tailor-made jackets wherever possible Minimised time for an intervention, and reduces chance of errors Budget from AT-VAC Procurement advancing well LEMIC Beampipe Status

o VI (beryllium) chamber ATLASDamaged VA chamber o Chamber and supports ready for installation o Integration into PIXEL scheduled for mid o Nov ’ 06 Detailed review of integration in progress with PIXEL community o VA chambers (2 to install) o One chamber ready for installation o One damaged during NEG coating and being o o 26 IX 06 re-built. Spare being completed Installation of VA inside argon endcap tested Fixed support tested successfully All supports delivered VA fixed point test LEMIC Beampipe Status

ATLAS II VT bakeout wrapping o VT chambers (2 to install) o One chamber ready for installation, o o two (including spare) ready for NEG coating Jack supports tested and ready Fixed supports – manufacture launched o VJ chambers (2 to install) o All 3 Chambers copper plated, and o o 26 IX 06 under vacuum test in B. 927 Final assembly, insulation wrapping and NEG coating to be done Cone support and interface plate with TX 1 S: manufacture in progress VJ vacuum testing LEMIC Beampipe Status

o Central (beryllium) pipe CMS o Accepted at CERN o Indications of a leak in the bulk o o material of ~10 -13 mbar. l. s-1 range Only visible for few hours after bakeout Under NEG coating o End cap pipe (2 to install) o 1 chamber NEG coated and ready for o installation 1 chamber uncoated, waiting for full assembly test (no spare end cap pipe) HF and CT 2 vacuum testing o HF pipes (2 to install) o o 3 chambers completed o Under acceptance test at CERN o Cu plating and NEG coating to do CT 2 pipes (2 to install) o 3 chambers completed o Crack in CERN-supplied material o 26 IX 06 detected in 1 chamber downgraded to spare for the moment – repair? Cu plating and NEG coating to do LEMIC Beampipe Status

CMS II o Forward pipes (2 to install) o 3 chambers completed o o and Cu plated NEG coating to do Cantilever support delivered o 18 m pumping module (2 to install) o 3 delivered o Final bakeout with integrated instrumentation on-going in B. 927 26 IX 06 LEMIC Beampipe Status

CMS: Installation of Forward Region? o Advance installation? o CMS propose to advance the o o 26 IX 06 installation of the forward region on 54 side Could start 15/1/07 Would save time in final installation, not on machine critical path Would include installation of TAS remote flange, common to CMS and ATLAS Checking availability of resources and bakeout equipment LEMIC Beampipe Status

o VELO window / UX 85 -1 LHCb o Installed o Support and alignment to the beam o axis to be done after RICH 1 exit window installation Some leak-tightness issues with VELO tank still remain o UX 85 -2 o Ready for installation o UX 85 -3 o Discovered the chamber has been o o 26 IX 06 Window / UX 85 -1 installation extensively varnished by manufacturer to close porosities in the bulk material Currently at Geneva airport? ? , acceptance tests, permanent bakeout and NEG do be done in October Installation tooling being built LEMIC Beampipe Status

o UX 85 -4 LHCb II o NEG activation test completed o Ultimate static pressure low 10 -12 mbar o Supports o Main components manufactured o Strength and alignment tests being performed – modifications required o Spare (alu) chambers o Manufacturer had problems with o 26 IX 06 welding qualification New planning agreed with the supplier: delivery of all chambers by End ’ 06 LEMIC Beampipe Status

LHCb o Installation planning very tight! o UX 85/3 by mid-November. . . o o o 26 IX 06 Depending on when the chamber arrives Followed by UX 85/4 and UX 85/2, until December Equipment in front of Q 1 must be installed before christmas to avoid conflict with corrector magnet commissioning Commissioning in Feb-Mar 2007 UX 85/3 support test in B. 927 LEMIC Beampipe Status

Beryllium Porosity o Porosity in machined thin-walled chambers o Conceptual issue for chamber machined from powder metallurgical o materials Porosity was looked-for in prototypes from both Russia and USA, but not encountered o LHCb (Russian) chambers o Manufacturer now accept that leaks of ~10 -7 mbar. l. s-1 were seen in the o o largest section of UX 85 -3 due to use of ‘non-UHV’ grade Diameter exceeded size available in the UHV grade Extensively varnished by the supplier to repair leaks without informing CERN o ALICE, ATLAS, CMS (USA) chambers o Stable leaks in the range 10 -13 mbar. l. s-1 range in ALICE and CMS o Will not impact performance if stable o Supplier is embarking on an internal investigation with a view to o 26 IX 06 improving material specification for any future chambers Supplier is upgrading EB welding equipment to prevent the problems seen in this manufacture LEMIC Beampipe Status

Spare Beryllium Section o Solution o Re-fit of the prototype 60 mm diameter section by the supplier, o o adding a stainless steel transition 1. 1 m of beryllium Can be transformed into a spare chamber for ALICE, ATLAS or CMS by the addition of stainless steel sections at CERN o Status o Order being placed o 3 -4 months delivery 26 IX 06 LEMIC Beampipe Status

VAX o VAX (8 to install) o Components complete o Bodies delivered to B. 927 o All instrumentation delivered o RGAs being calibratred o Integration of vacuum instrumentation onto body and testing starting 26 IX 06 LEMIC Beampipe Status

Gas Injection System GIS test in B. 113 o Gas injection system o All components delivered o Assembly of series in progress o Procedures being reviewed in group o Details of procedures being o finalised on set-up in B. 113 This will be a very delicate operation! o Integration into the experimental areas in progress o Requires vacuum fired o 26 IX 06 connections with NEG strip and permanent bakeout equipment Pipework for ALICE and LHCb under manufacture LEMIC Beampipe Status

Beampipe Installation and Teams 2005 ALICE ATLAS CMS 2006 2007 Secondary team Principal installation team RB 26 CP RB 24 VI on surface ? LHCb Virtually no more margin! 26 IX 06 LEMIC Beampipe Status

Outstanding Issues o Production issues o LHCb UX 85 -3 chamber (and spare) critical for installation o Need to treat as top priority at CERN (test, NEG coat) o CERN workshops are overloaded o Some components (VAX, pumping modules) have been delayed several o months Delivery dates for the few remaining new jobs are very long, and all priorities must be strongly defended – any ‘spares’ are difficult to justify o Urgent modifications following final testing o UX 85 -3 support, ALICE IBS o Gas injection system needs to be ready for ALICE bakeout o Services o Detailing and installation of services for instrumentation and bakeout o 26 IX 06 are generally progressing well Readyness reviews for LHCb, ATLAS and CMS? LEMIC Beampipe Status

Outstanding Issues II o Installation o Resources o Additional FSU for 2 nd installation team now operational o 2 installation teams still an upper limit for reasons of competences o Milestones o Machine requires experimental sectors to be commissioned by End July ’ 07 o Therefore ATLAS and CMS installations must start in ~April ’ 06 o Resource limitations mean ALICE and LHCb must be commissioned by March o ’ 07, or machine milestone will slip! ATLAS Endcap Toroid delay means beampipe installation schedule needs review o Interference with other activities o Corrector magnet commissioning in IR 2 and 8 o Availability of triplet magnets and cooldown schedules – IR 2 and 8 o Post-commissioning activities o Machine access will be maintained until [October ’ 07? ] o Need a schedule from experiments in this period 26 IX 06 o Open-closed-vacuum-gas? o Expected dates o Plan resources required for vacuum system LEMIC Beampipe Status