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This document contains preliminary engineering drawings related to the ME0 muon system upgrade, compiled by Sasha Surkhov on February 22, 2014, and updated on March 3, 2014. It outlines critical specifications for the ME0 chamber, including dimensions and weights, and discusses the readout electronics configuration, power requirements, and layout details. The design ensures efficient operation with proper shielding and integration of various components. It also highlights the need for simulations to evaluate the geometry and performance of the proposed design.
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MUON UPGRADE: ME0 All engineering drawings from Sasha Surkhov 22.2.2014 PRELIMINARY !! GMM 3-3-2014
INTERFACE HE: ME0 • Extension up to 3.0 ; 3.5 ; 4 ? • Calorimeters are working • out various scenarios
ME0 CHAMBER LOCATION R_inis 400mm R_out 1400mm Z_min200mm Z_max300mm
Possible ME0 Stack Layout Back flange Mechanical Supports Guiding Rail & Services Pocket For package of 6 • 20-degrees/chamber in phi, 2-chamber units offset in phi degrees in successive layers • Assures 4 or more hits at all f , given the dead space between abutting chambers • Absorbers removed from previous version • Need simulations to evaluate geometry • Weight of each 20 x 18 degree 6 layer wedge 60x6 = 360 kg • Weight of ME0 per endcap 360x12= 4320 kg 6 1 3 5 2 4 Thicknesses cm: 2.5 Borated Poly 1.2 Pb 3.2 Single Chamber 1 3.2 Single Chamber 2 3.2 Single Chamber 3 3.2 Single Chamber 4 3.2 Single Chamber 5 3.2 Single Chamber 6 3.2 Sliding Rail 1.2 Pb 2.5 Borated Poly ------------------------ 28.8cm 2.5 borated polyethylene plus 1.2 Pb for n shielding f direction → 2.5 borated polyethylene plus 1.2 Pb for n shielding 12 30 degree Chambers R_inis 400mm R_out 1400mm Z_min200mm Z_max300mm Dz = 30 cm • Archana: 21.2.2014
Readout Electronics - Current baseline VFAT3 ASIC GEB Opto-hybrid GBT TTC TTC Opto links uTCA uTCA DCS DCS DAQ DAQ Muon TF Backend electronics Paul Aspell & Gilles Delentdecker
ME0 Power : Possible Granularity • Each single detector will consist • 3072 readout channels – strips running one directional in φ • 24 VFAT3 chips • 1 optical-hybrid based on GBTs • One ME0 super-module wedgewill consist 6 times the single detector. • 18432 readout channels – strips running one directional in φ • 144 VFAT3 chips • 6 optical-hybrids based on GBTs
LV Power Table and LV Cables Package 8A@3V 14A@3V 22A@3V • Modular Structure of ME0 permits easy maintenance and operation of all the electronics • The LV power granularity should follow the same concept. It will secure: • Flexibility of switch on/off part of the super-module • Secure the LV current monitoring on single detector level. • Dealing with “low” currents per cable. • The LV power cable package couldbe: • 6 cables for the VFATs 8A@3V • 6 cables for the optical hybrids 14A@3V
Fibers – Possible Layout • Per single detector we have 4 versatile optical links with 8 fibers to the uTCA GEB in total • Per super-module we will have 24 versatile optical links with 192 fibers to the uTCA GEB
HV Powering • It will be based on Multichannel system able to measure the HV currents through the GEM foils. GEM tops GEM bottom
Cable Package for the ME0 super-module - Wedge 12 LV cables – (6 x 14A@3V) + (6 x 8A@3V) 192 Fibers (24 versatile links to uTCA GEB) 6 HV Multi-core cables
Approximate ME0 Deadlines August 20 Submit CMS/LHCC March 20 First Draft April 20 II Draft May 20 III Version June 20 TP Ready TP Preparation Stack Layout Wedge Engineering Layout R&D Needed Module Layout Readout Layout Front-End electronics DAQ Cost Estimates Services Layout Integration Layout CERN Test Beam Requests Costing estimates
BackUP • Documents available from integration Office
Present Shielding for ME1/1: Need Simulations for ME0 shielding 20mm B-Poly + 10mm Pb h=2.0 GE1/1 GE0 25mm B-Poly + 12mm Pb Neutron Shielding 50mm B-Poly + 50mm Pb Z ~ 5250-5530* GMM - Archana Sharma - 3/2/2014