Beam Background and Detector Layout

1
Beam Background and Detector Layout

• 4th Concept Collaboration Meeting
• FNAL 19-20 October 2006

2
VXD Layout (SiDMay06)
3
The Issues

• SiDs VXD and Beam Pipe is optimized for 5 Tesla
  B field
• Beam optics requires for the TPC rin gt 20.5 cm

4
The angles involved
VXD B (13)
VXD B (12)
TPC BP (10)
DREAM (6.5)
5
The Numbers Involved

• Small exercise using eq. Motion of particle in
  B-Field

q (rad) Pt (3.55 T) GeV Pt (5 T) GeV
TPC 0.077 0.25 0.35
VXD Barrel 0.11 0.015 0.021
VXD Endcaps 0.10 0.017 0.024
Beam Pipe 0.096 0.013 0.018
Dream Endcaps 0.067 0.36 0.50
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Would it be a Problem?

• Much will depend on ILC parameters

7
USSC beam parameters

• TPC
• VXD Barrel
• VXD Endcaps
• Beam Pipe
• DREAM
• Generic (4Tesla)

8
It will be for High Luminosity
colored dots is 10cm detector at r1.5 cm for
3,4,5 Tesla

• TPC
• VXD Barrel
• VXD Endcaps
• Beam Pipe
• DREAM
• Generic (4Tesla)

9
Need a Simulation for B3.5 Tesla

• Need a full simulation
• 3.5 tesla (for 4th Concept)
• 5 Tesla (for our exchange program with FNAL)
• Files available at SLAC (stdhep)
• D. Barbareschi will do that