RPC SYSTEM LAYOUT and DIMENSIONS M. Shariq Khan National Center for Physics Quaid-e-Azam University, Islamabad PAKISTAN

CONTENTS Geometrical Layout of CMS End Cap RPCs Chamber Sizes Patch panel Mountings FEB cooling & gas circuit on RE 2/2 Summary

GEOMETRICAL LAYOUT OF CMS END CAP RPCs Chamber Data Chamber Geometrical Data Gaps Details Strips Geometry for  segment for a,b,c,d

No. of channels/chamber CHAMBER DATA   RE 1/1 1/2 1/3 RE 2/1 RE 2/2 RE 2/3 RE 3/1 RE 3/2 RE 3/3 4/1 4/2 4/3 (Plus & Minus Z) 36*2 18*2  Segments 4 3 2  Coverage, deg. 10 20 Strips/ Segment 32 64 No. of channels/chamber 128 96 256 192 No. of chambers

Chamber Geometrical data No. of chambers

Gap Geometrical data No. of chambers

Strip data No. of chambers

RE 1/1 Mounting

RE 1/1 Mounting

RE 1/1 Mounting

RE 1/2 Mounting

RE 1/2 Mounting

RE 2 Mounting

RE 2 Mounting

RE 4/1 Mounting

Patch Panel

FEB Cooling

ANALYSIS 1

ANALYSIS 2

ANALYSIS 3

ANALYSIS 4

ANALYSIS 5

ANALYSIS 6

ANALYSIS 7

ANALYSIS 8

Summary Gaps with the specified geometrical dimensions have already been built and tested. Holes for RE 1/1 rails and mounting brackets already drilled on HE back flange (- side ). Rails have been installed. Mounting holes for RPCs on YE1 & YE3 have been drilled for stations 2 & 3. RE 1/2 are attached to CSCs, RPC staggering follows CSCs. RE 1/3 mounted under CSCs, 110 mm off YE1 to accommodate cable trays. Position of RE 4 mounting holes on shielding wall determined.