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The forward RPC system (TDR)

The forward RPC system (TDR). China. “ Thin design everywhere ”. Korea. Pakistan. Gap production Korea. Front-end electronics Pakistan. 2. Existing at present. China. Pakistan. Staged. Low eta chambers identical for stations 2,3 and 4.

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The forward RPC system (TDR)

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  1. The forward RPC system (TDR) China “ Thin design everywhere ” Korea Pakistan Gap production Korea Front-end electronics Pakistan 2

  2. Existing at present China Pakistan Staged Low eta chambers identical for stations 2,3 and 4

  3. Build station RE4 i.e.144 RPC of the low  type Services to the RE4 station High  RPC’s: 72 RE1/1 + 36 RE2/1 + 36 RE3/1 (high rate!) Services to high  RPC’s (gas & cooling foreseen) Restore HV to 1 channel/chamber (NOT 2 ch/ch) Little design and integration required Requires YE4 shielding walls to support RE4 Price tag (without link and trigger system) ~ 4.3 Mio CHF Restoring the TDR system ?

  4. Results shown for range of RPC efficiency & noise Improvement from extra plane

  5. Support RE4 From YE3 Move the present RE2 station to YE4 to become RE4 Rebuild a new DOUBLE station RE2 ( Call it newRE2) i.e. 144 “packages” for the low  part. Limit the services to present station RE2 (LBB,gas,etc…) Hence make AND/OR on the chamber package. May need extra HV, LV. NO increase of the trigger system wrt TDR Live in EXISTING envelope (no shimming of magnet). Design work and integration required ! Rest of this talk (also see Luc’s talk) High  part as before (with RE2/1 double RPC) Price tag (without link and trigger system) ~ 6.0 Mio CHF A possible road to a 5 station system

  6. New RE2: double RPC with on chamber AND/OR logic See Luc’s talk

  7. Possible (aggressive) timeline for phase I Mumbai RPC conference

  8. Korean Gas gap production facility to remain active and funded Mechanical parts from China (funded) Continuing help from barrel RPC’s (FEB, Coincidence etc…) Keep the ISR lab facilities active (continued support from CERN ) Enough funding available ? Upgrade is estimated at ~ 6 Mio CHF (cfr. RRB document) Confirmed partnership: Belgium-China-India-Korea-Pakistan Under discussion: CERN-Italy-Iran-Egypt Define the responsibilities among the partners The FW RPC upgrade is mandatory for physics at the design luminosity of LHC and even more so for SLHC The presently build initial system of 3 stations at low  requires to be more than doubled ! Status of discussions

  9. RE4 on YE3

  10. Interface

  11. RE4 near yoke

  12. RE4 near yoke

  13. And off yoke RE4

  14. Envelope 626+20=646mm of 655 available 626 mm

  15. RE up-scope required by Physics at the LHC design Luminosity We can do better than the TDR version at little extra cost Collaboration ~ defined and funding (at least for Phase I) secured Mechanics and gas gaps defined and installation scenario understood Details on services still to be finalized We seek approval for Phase I to start orders of HPL and mechanics Summary and conclusions

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