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Straw working group. Introduction. Status and plans 2011. Module 0 The frame is in 154 Straws (report by Neil and Yuriy ) Parts and tooling ready by the end of February 64-straw prototype: Test beam with new web and cover with TDC. (validation!) Electronics

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straw working group

Straw working group

Introduction

Hans Danielsson

status and plans 2011
Status and plans 2011
  • Module 0
    • The frame is in 154
    • Straws (report by Neil and Yuriy)
    • Parts and tooling ready by the end of February
  • 64-straw prototype:

Test beam with new web and cover with TDC. (validation!)

  • Electronics
    • Shorter web (received), TDC (FPGA), CARIOCA baseline
  • Interface parts, which means integration
  • NEW: Micromegashave been ordered for tracking 4x (10x10cm2). Independent tracking for cosmics and test beam. (~ April)

Rate >100kHz/cm2 and s ~ 25 mm.

Hans Danielsson

major procurement in 2011
Major procurement in 2011
  • Straw material (single supplier) 65 kSFr
  • Frames: DR and Market Survey > 300- kSFr
  • Interface parts
    • Workshop on detector Integration Date ?
    • “Module 0” in September
  • Tooling (Installation in the experiment)
  • Gas system
  • Web, mechanical parts, power supplies etc. First validation with module 0, then series production

Hans Danielsson

milestones in 2011
Milestones in 2011
  • Module 0 start-up Feb. 2011
    • Finish assembly 1/7/2011
  • Straw production start-up in Dubna End of Jan
  • Interface part “module 0” 1/10/2011
  • Assembly site at Dubna ready Jul 2011
  • Decision on FE baseline Jan 2011

->Ok, CARIOCA

  • Validate TDC on cover (test beam) June 2011
  • Synchronization run ??? Nov. 2011

Hans Danielsson

spares
Spares

Hans Danielsson

working principle
Incident charged particle

Gas

cathode

High voltage 1

Conversion gap

E1

e-

Micro-grille

Avalanche

Amplification gap

Anode strip

E2

Anode plane

Working principle

High voltage 2

1 ) Conversion stage:

Ionization of gas by the charged particle which produces electron-ion pairs.Electrons directed by E1 (0.1 to 1 kV / cm) to the micro-grid, and cross the mesh holes.

2 ) Amplification stage:

E2 (≈ 50 kV/cm) >> E1 avalanche, electronsmulitplication.

Shuoxing Wu

08-03-2010

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