PRR of SCT off-detector cooling system

CCLRC 1April 05Jason Tarrant

PRR of SCT off-detector cooling system

Cooling System» Design - Off-cylinder & On-cylinder

» Installation – Off-cylinder & On-Cylinder

» Manufacture – On-cylinder only

» Assembly – On-cylinder only

» Post assembly operations – On-cylinder only

» Schedule – On-cylinder only



Design» Off-Cylinder» On-Cylinder



Design» Off-Cylinder

– HEX / filter– Heater

» On-Cylinder– Inlet– Exhaust– Combined



Design» Inlet – with fluid flow

SERTO @ PPF1 5mm OD / 3.4mm ID with filter 3mm OD / 2mm ID through HEX ECcap3 custom connection @ STFT Capillaries LMT cooling circuit (combined) – or –

PPF0 @ Disc



Design – Inlet…» SERTO @ PPF1

– 6mm OD – 5mm OD

– SERTO issues 316 Magnetic? (Danielsson / Olcese)

– Swagelock issues Not survive many connection / disconnection May need retightening after time

» 5mm OD / 3.4mm ID with filter– Standard Cu tube 5mm OD 0.8mm wall

Joined over 3mm OD tube exiting the HEX (QMUL design)

– Filter design Screen 0.5mm holes (264) > 5x 3.4mm ID of inlet tube Capillary ID 0.68 or 0.76mm



Design – Inlet…» 5mm OD / 3.4mm ID with filter…



Design – Inlet…» 3mm OD / 2mm ID through HEX

– CERN stores– Coiled through HEX

8mm ID, 13.5mm OD (touching) 4mm pitch, 84 coils Effective length 2923mm (incl. 10mm each end to start coil)

» ECcap3 custom connection @ STFT– Space, electrical isolation, soldering compatibility

To PPF1



Design – Inlet…» Capillaries

– ID 0.68mm or 0.76mm– Length around 2.5m (tuned)– Coiled / convoluted routing on cylinder (TBD)– Joined to LMT Cooling circuit or PPF1

» LMT cooling circuit (combined)– 3.74mm OD 70um wall– Swaged-solder connection

Al spreader foil

Power tapes

Cooling tubes

Schematic 2: cross section of cooling concept for 3 stacks of power tapes



Design – Inlet…» PPF0

– Based on Helicoflex– Already tested (I.Wilmut)– Only hole changes from original design

2 Types 1.3 & 1.25 nominal (0.76 & 0.68mm ID)



Design» Exhaust – with fluid flow

PPF0 @ Disc or LMT cooling 6.0mm ID / 8.1mm ID tubing ECex1 HEX ECheat1 custom connection Heater PPF1



Design – Exhaust…» PPF0 @ Disc or LMT cooling

– PPF0

– LMT Cooling



Design – Exhaust…» 6.0mm ID / 8.1mm ID tubing

– 6.0mm ID 0.2mm wall = 30mm bend R

– 8.1mm ID 0.15mm wall = straight lengths only 4x8.4mm (+1.2mm gaps) = 37.2mm



Design – Exhaust…» ECex1

– Custom connection

» HEX– 14mm ID 0.2mm wall CuNi– 370mm long body with end caps

STFT



Design – Exhaust…» ECheat1 custom connection

– Staggered connections– Insulation issues– Fastening issues– Cu – Stain.s



Design – Exhaust…» Heater

» PPF1– SERTO 6mm OD - 6mm OD

13

16.2



Design – Off-cylinder» HEX assemblies (no inlet / filter) complete

– Iteration through QMUL practical experience (end-caps – soldering of ECcap3 & ECex1)

» Higher level, 1 ‘sample’ for in-house tests, rest to do» Assembly of all HEX (new) for overall view» Parameter dwg to do?



Design – On-cylinder» Exhaust & LMT circuit design, PPF1 – STFT complete



Installation – On-cylinder – Assembly Sites (Liv. NIK.)» Combined (Exhaust / Inlet assembly)

– D9-D7 before D9 or before D6 services laid (avoid layering)– Laid using support frame– STFT clip (await connection), PPF0 connected, LMT Kapton taped– Exhaust uses insert mounted clamp, Inlet clipped to exhaust, LMT wrapped

with LMTs

» Exhaust– D6 –D1 with relevant Disc– Laid by hand STFT clip (await connection), PPF0 connected– Exhaust uses Support Cylinder insert mounted clamp



Installation – On-cylinder – Assembly Sites (Liv. NIK.)» Inlet

– D6-D1 with relevant Disc– Pre-formed coils– Laid by hand, supported above STFT, Kapton taped– Inlet clipped to exhaust



Installation – On-cylinder – Assembly Sites (Liv. NIK.)» Connection for Testing



Installation – Off-cylinder» Space required to ‘insert’ connection

– Use R1116 envelope (post EC insertion)



Installation – Off-cylinder» Order of connection

– Low Z to high Z– Special spanner

Z+Z-



Installation – Off-cylinder» Strain relief at STFT (ECex1)

– Permanent– Adjustable

positions not guaranteed



Installation – Off-cylinder» Connection for Testing

– STFT break & make + drying if cold testing Compromise for maximum HEX length

– Extension pieces connected in, STFT sealed once, testing, remove & integrate SCT EC into ATLAS, add interconnect to PPF1, seal & test seal



Manufacture – On-cylinder only» Piece Parts all detailed & out for manufacture with NTE (6

weeks from 24/03/05)» Attempting to get them to deliver those for D9 – D7

(including LMT cooling) ASAP



Assembly – On-cylinder only» Jig details out for quote» Jig to be used @ RAL for assembly of Interconnects,

including LMT cooling



Post assembly operations – On-cylinder only» Clean circuits

– Flushing with Swansolve

» Pressure test– To 25 Bar

» Leak test– 5x10-8 bar l/s (time / pressure test)

» Check blockage– Simple flow test for circuits with capillaries (based on flow through Disc

capillary for D9 – D7)

» Bar code according to the ATLAS parts ID– With traveller document



Schedule – On-cylinder only» Interconnects

– SB - Models / drawings for D9 - D7 including LMT cooling - 09/03/05– JT - Check drawings - 10/03/05– SB - Quote pack to go to NTE - 11/03/05– NTE - Quote back - 16/03/05– SB / OM raise order & release through OM - 17/03/05 (actual 24/03/05)– NTE Manufacture - 6 Weeks(incl. Easter) - 28/04/05– RAL Tech manufacture D9 (all 8 /2 types) incl.LMT cooling - 1 Week -

5/05/05– RAL Tech manufacture D8 (all 8 /2 types) incl.LMT cooling - 1 Week -

12/05/05– RAL Tech manufacture D7 (all 8 /2 types) incl.LMT cooling - 1 Week -

19/05/05



Schedule» Jig

– JT-Model Jig - 08/03/05– Contractor detail jig - 2 Weeks - 22/03/05– JT - Check drawings (incl. any changes) - 24/03/05– JT -Quote pack to OM - 29/03/05 – Expected 01/04/05 (companies

turning down!)– JT / OM raise order & release through OM - 29/03/05– Manufacture 4 weeks - 26/04/05

PRR of SCT off-detector cooling system

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