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Integration

Integration. Collaboration Meeting December 2003 Eric Scott. GlueX Detector Integration Mission: To ensure systems meet or exceed physics driven goals To ensure that detectors are designed in a sensible way To ensure they fit together when assembled and function as intended.

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Integration

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  1. Integration Collaboration Meeting December 2003 Eric Scott GlueX Detector Integration Mission: To ensure systems meet or exceed physics driven goals To ensure that detectors are designed in a sensible way To ensure they fit together when assembled and function as intended

  2. Prior conceptual goals • Access to any detector package in one shift period • Access to detector package without removing cables • Signal cables as short as possible • Fiber to control room • Limits ground loops

  3. Considerations from BABAR • Inter-system clearance of 20 mm • Possible exceptions: parts close to solenoid or mechanically fastened to neighbors… • Good Neighbor Policy • “No system may pass its problems to its neighbor without the neighbor’s agreement.” • Such as: Thermal issues – heat put into the solenoid must be removed. • Common Services • Insertion Fixtures • Air Conditioning, heating, ventilation ? http://www1.na.infn.it/wsubnucl/accel/BaBar_old/TDR.html

  4. Survey Thoughts • Design detector packages with known external reference points. • Establish reference convention: • Center of target Z=0 for experiment? • Offset from inside or outside upstream iron • A realistic “human” reference

  5. Integration Packages Package Access Area Package Access Area Cerenkov FCAL TOF Solenoid & Barrel Tracking US Package Fixed Package DS Package

  6. Living with our Solenoid…“Fixed Package” • Fill the central gaps • Barrel Calorimeter covers them anyway • Reduces fringe field • What other steel modifications are desirable / necessary? • US end Fringe Field Suppression possibilities…

  7. Closed Solenoid Standard solenoid Clipped 150 gauss Upstream end Solenoid face is at 0 Front gap is open 4 inches, all others are filled

  8. Standard Solenoid Standard solenoid Clipped 150 gauss Upstream end Solenoid face is at 0 Both ends opened the same amount. All gaps are filled

  9. Solenoid with Plate Standard with 20” X 80” diameter plate located 4” US with a 12” diameter beam hole. Clipped 150 gauss Upstream end Solenoid face is at 0 Both ends opened the same amount. All gaps are filled

  10. Solenoid Plug Standard with 20” X 80” diameter Plug ~4” gap with a 12” diameter beam hole. Clipped at 150 gauss Upstream end Solenoid face is at 0 Both ends opened the same amount. All gaps are filled

  11. Inside the Barrel“US Package” Tracking • CDC • Part of US package? • Cables out US end • Planar Drift Modules • Part of US package / independent? • Cables out US or DS end • DS cable exit – impact on acceptance? • US volume

  12. Possible interference point for DS cable path driven by Cerenkov design and physics acceptance issues…

  13. DS of Solenoid“DS Package” • TOF & LGD • Package slides DS • Appliance concept • Power & Cooling in • Data out (Fiber?) • Cerenkov • Could integrate with TOF & LGD package • Sets the elevation in the hall, should it still? Cerenkov FCAL TOF

  14. Avoiding the millimeter war… • Unified CAD database: JLAB – Unigraphics? • Central repository • Maintainer • One contact person • One location • Current source tree available to all • Establish detector volumes for package groups • Procedure for when conflict arises… • Correlated with simulation geometry?

  15. One stop Engineering support? • Who provides the service? • What are they providing • A check on safety critical points • Design assistance • Full design service • When do we have to have this person / group in place?

  16. Key near-term issues… • Magnet iron / Fringe field reduction (Shielding) • Experiment / Hall elevation (Cerenkov – other PID tech.) • Rack locations: US front, side, access while beam is on… • Cable / Optical space & paths • All out front / some out front for inner sled • If some come out the back, acceptance issues? • Detector interconnects (supports): • Designs must be finished by:______ • Power / Cooling needs and method • Inside magnet (CLEO’s PF-200IG based hydrocarbon coolant farm) • Outside AC, chilled water… • Fire detection / Suppression • Inside magnet gas system? (FM 200 – heptafluoropropane?) • Outside dry pipe, power interrupt on alarm • Fire-wire, air sampling – sniffers…

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