EDR-06, 3 Sep 2002 D Cockerill - RAL CMS ECAL End Cap

ECALEnd Cap

Project updates•ECAL electronics integration group T Lodge(RAL) deputy to W Lustermann.

— Common ECAL wide solutions.

•EE PlanningIncorporated into overall ECAL planning.Justin Greenhalgh in regular contact with ECAL PM, TC and DTC.

•EE Tooling, mounting, assemblyPerson(s) to take responsibility for this work currently under discussion.

Response to EDR-04

EDR-06, 3 Sep 2002D Cockerill - RAL (

2)CMS ECAL End Cap

ECALEnd Cap

Response to EDR-04

• SC mechanics– Market survey launched with OJEC notice on 4

July 2002– Deadline for questionnaire replies, Aug 19 2002– Sorting of replies, requests for tender, Aug 22

2002– Choose company(ies) end 2002

– 332 alveolar units completed by Myachichev– Sufficient for all of EE+ and 20% of EE-

EDR-06, 3 Sep 2002D Cockerill - RAL (

3)CMS ECAL End Cap

ECALEnd Cap

Response to EDR-04

• VPTs– Pre-production, RIE: 500 delivered to RAL, Nov 2000.– Mass production contract, RIE, Oct 2001 for 15000 tubes.– Mass production: 1500 delivered– 1200 visually inspected and 1100 tested at 1.8T, RAL– Over 60 tested at 4T, Brunel

• Full scale Endcap model– E0prime constructed at RAL, June-Oct, 2001– Capacity for 4 cantilevered SCs– Accurate modelling of slice through Dee– Dee cooling, fibre optic & HV services plane, interim cooling

plane, moderator, LV and power cooling plane, readout (50 channel units) plane, moderator+cooling HE side.

EDR-06, 3 Sep 2002D Cockerill - RAL (

4)CMS ECAL End Cap

ECALEnd Cap

E0’

E0’

Up to 4 Standard SCs

Umbilical noise and optimal layout studies

Dee service and electronic integration issues

EDR-06, 3 Sep 2002D Cockerill - RAL (

5)CMS ECAL End Cap

ECALEnd Cap

E0’

Accurate cross section through Dee

All service planes incorporated

50 channel readout box incorporated

To end 2002 - noise studies

2003 – proposal: incorporate new ECAL electronics, take to test beam

EDR-06, 3 Sep 2002D Cockerill - RAL (

6)CMS ECAL End Cap

ECALEnd Cap E0’ stages of build

Fibre optic bundle, backplate & cooling, umbilical

Interim cooling plane, HV, moderator, LV, power cooling plane

EDR-06, 3 Sep 2002D Cockerill - RAL (

7)CMS ECAL End Cap

ECALEnd Cap VPT data

Yield (e/MeV), 1.8T (RAL) versus P*G at 0T (RIE)

Yield (e/MeV), 1.8T (RAL)