Sct Ec Thermal Enclosure

SCT EC THERMAL ENCLOSURE Date: 14/12/05 Martin Gibson, Stephen Haywood & John Noviss http://hepwww.rl.ac.uk/atlas-sct/engineering/ec/endcap/TE/

News Valencia & CERN:  Valencia hope to deliver OTE to CERN mid-Jan.  Patrick Werneke will oversee completion of ITE at CERN.

Rails:  Preparation of all Rails finished; 4 Short Rails are awaiting machining.

Heater Pads:  John didn’t have time to try importing Gerber files; may not be possible, so forget.

LMT Cooling:  Clips received.  Foils & Clips (inc 10% spare) delivered to Liverpool; will send to Nikhef in New Year.  Martin has documented corrosion expts. Pipe showed no damage, although Foil did.

Membranes:  Martin has made 3 Rear + 1 Front G&S Membranes.  Stephen is concerned about contraction of Membranes: ripping at slits, rupture of solder joints and distortion of STFT. Calculations for Cu alone suggest radial contractions ~0.3 mm, with stresses ~1.2103 N/m (around circumference). This is a big worry.

Disc Shunt Shield:  Stephen discussed with Tim in Liverpool again.  Tim would like design of Peek caps asap and to test a panel electrical in Jan.  May have to assemble in parts because of scarcity of Airex and width of “sander”; see if C+G Joinery could reduce it.

STFT:  Stiffener: just requires mod to holes.

Orders:  Place order for Inserts for Rear Flange (3 types) when Stiffener agreed.  (Do we have all Inserts for RTE and which Inserts need foil covers? See p4)  About to place order for Peek nuts for Rails Priorities (in order of importance)

John 1. Produce drawings of Heater Pad wiring, from Pads to PPF1, for Steve McM – 14-16 Dec. 2. Disc Shunt Shield: design Peek caps. 3. Complete G&S design & assembly:  Connection of Membrane to OTE in presence of Heaters – mind the gap ?  Extend ITE foil. 4. Complete Stiffener drawings for Martin to check – by 23 Dec. 5. In-fill pieces for STFT around Cooling: make mods for DCS; get made.

6. ITE Clamps: make mods to for N2 delivery; get modified – by 6 Jan. 7. Help Jason. 8. Copy drawings to CDD (help Ian with Disc drawings).

Martin 1. Order suitable Airex. 2. Produce Prototype for Disc Shunt Shield to test thickness of Airex, Al clips and for Tim’s electrical test. 3. Finish Rails. 4. Produce Membranes: 2 Front G&S; 3 Front gas. 5. Send LMT Cooling parts to Nikhef in New Year. 6. Produce Disc Shunt Shields. 7. Provide Foil for under thermistors on Heater Pads. 8. Check STFT Stiffener drawings. 9. Produce STFT Stiffeners.

Stephen 1. Inquire whether any other parts to ship to Nikhef. 2. Discuss application of Heater Pads with Brian Anderson. 3. Organise a drink in New Year. 4. Consider shipping ITE#2 & Wings to CERN.

Richard 1. Come up with connections for Heater Pads in series.

Valencia & CERN 1. Return Foam (probably) when finished. Task List for Thermal Enclosure SH 14 Dec 05 OTE

 Drawing [JN, by 4 Mar; checked by Steve Carr]  Gasket design [JN, wb 7 Mar]  Procure materials [JN,PF]  Dry Airex  Alochrome or Ni-plate for Al [observe Barrel]  Manufacture CF Flanges & Ultem Inserts  Tests o Test stiffness and deformation. o Test with Short Test Cylinder (STC), by putting some simple adjustable rails on. o Test a prototype OTE band on End-cap using production Rails; check Service clearance.

 Drawings & Work Instructions (understand how to make holes)  Ship Airex & Kapton to CERN – don’t ship Rear Support Panel (need to modify for Alignment targets)  Manufacture Top Hat Just need small additions.  Manufacture Inserts  Resolve G&S connection with ITE

 Test Channel with Kapton

 N2 Holes [PF]  Design filter [JN]  Support for assembly [where can this be tested?]  Drawings & Work Instructions  Ship Airex, Kapton & Foil to CERN

Heaters

 Discuss with Marko Mikuz.

 Check Drawings [JN]  Some concern about precision of Inserts – good to test the pre-production Rail on SC in Lpool.  Decide number of Rails on how floppy the prototype is.  Two types of Rail designed: over Fixations need cut-outs.  Manufacture

LMT Cooling

 Foil design  Clip design – in discussion with Jason  Assembly instructions  Manufacture of Foils, extra Clips (for LMT Cooling Pipes) Membranes

 Consider stiffness  Manufacture

 Foam insulating ring between RTE and ITE – Martin; await dimensions of ITE.  Foam Stiffener for STFT – obtain spare Foam from Valencia/CERN – Martin; await approval of design.  Pipe support in Stiffener – Martin.  Foil shield in Stiffener – Martin.  Foil covers on Inserts – Workshop; await Inserts.  Kapton to cover Tapes in STFT.  Kapton sheet to cover all Endcap services (under Rails) – John/Jason.