W.Van Doninck Re-scope TDR August 2008

The forward RPC system (TDR)The forward RPC system (TDR)The forward RPC system (TDR)The forward RPC system (TDR)

ChinaChina

KoreaKorea

PakistanPakistan

Gap production

Korea

Gap production

Korea

Front-end electronics

Pakistan

Front-end electronics

Pakistan

“ Thin design everywhere ” “ Thin design everywhere ”

RE1/1

RE1/2

RE1/3

RE2/1

RE2/2

RE2/3

RE3/1

RE3/2

RE3/3

RE4/1

RE4/2

RE4/3

No. of chambers 36*2 36*2 36*2 18*2 36*2 36*2 18*2 36*2 36*2 18*2 36*2 36*22

W.Van Doninck Re-scope TDR August 2008

Existing at presentExisting at presentExisting at presentExisting at present

RE1/1

RE1/2

RE1/3

RE2/1

RE2/2

RE2/3

RE3/1

RE3/2

RE3/3

RE4/1

RE4/2

RE4/3

No. of chambers 36*2 36*2 36*2 18*2 36*2 36*2 18*2 36*2 36*2 18*2 36*2 36*2

China

Pakistan

Staged

Low eta chambers identical for stations 2,3 and 4

W.Van Doninck Re-scope TDR August 2008

Restoring the TDR system ?Restoring the TDR system ?Restoring the TDR system ?Restoring the TDR system ?

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

W.Van Doninck Re-scope TDR August 2008

Improvement from extra planeImprovement from extra planeImprovement from extra planeImprovement from extra plane

Results shown for range of

RPC efficiency & noise

W.Van Doninck Re-scope TDR August 2008

A possible road to a 5 station systemA possible road to a 5 station systemA possible road to a 5 station systemA possible road to a 5 station system

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

W.Van Doninck Re-scope TDR August 2008

New RE2: double RPC with on New RE2: double RPC with on chamber AND/OR logicchamber AND/OR logic

New RE2: double RPC with on New RE2: double RPC with on chamber AND/OR logicchamber AND/OR logic

See Luc’s talk

W.Van Doninck Re-scope TDR August 2008

Possible (aggressive) timeline for Possible (aggressive) timeline for phase Iphase I

Possible (aggressive) timeline for Possible (aggressive) timeline for phase Iphase I

Mumbai RPC conference

W.Van Doninck Re-scope TDR August 2008

Status of discussionsStatus of discussionsStatus of discussionsStatus of discussions

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 !

W.Van Doninck Re-scope TDR August 2008

RE4 on YE3RE4 on YE3RE4 on YE3RE4 on YE3

W.Van Doninck Re-scope TDR August 2008

InterfaceInterfaceInterfaceInterface

W.Van Doninck Re-scope TDR August 2008

RE4 near yokeRE4 near yokeRE4 near yokeRE4 near yoke

W.Van Doninck Re-scope TDR August 2008

RE4 near yokeRE4 near yokeRE4 near yokeRE4 near yoke

W.Van Doninck Re-scope TDR August 2008

And off yoke RE4And off yoke RE4And off yoke RE4And off yoke RE4

W.Van Doninck Re-scope TDR August 2008

Envelope 626+20=646mm of 655 Envelope 626+20=646mm of 655 availableavailable

Envelope 626+20=646mm of 655 Envelope 626+20=646mm of 655 availableavailable

626 mm

W.Van Doninck Re-scope TDR August 2008

Summary and conclusionsSummary and conclusionsSummary and conclusionsSummary and conclusions

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