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T1008 status. March 19, 2012 W.Baldini for the SuperB -IFR Group Presented by Aria Soha. R&D for the SuperB Instrumented Flux Return. Muon Identification E< 5GeV Superconducting solenoid F lux R eturn I nstrumented with active material

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t1008 status

T1008 status

March 19, 2012

W.Baldini for the SuperB-IFR Group

Presented by Aria Soha

r d for the superb instrumented flux return
R&D for the SuperB Instrumented Flux Return
  • Muon Identification E< 5GeV
  • Superconducting solenoid Flux Return Instrumented with active material
  • Plastic scintillator bars readout through WLS fibers and Silicon Photo-Multipliers (SiPM)
  • Baseline layout to be tested on beam with a prototype
  • TDR to be written in spring…
the ifr baseline detection technique
The IFR Baseline Detection Technique
  • Magnet Flux Return instrumented to detect Muons and KL
  • BaBar-like detector with hexagonal barrel and two encaps
  • Plan to re-use BaBar IFR structure, adding iron to improve μ-ID
  • Scintillator as active material to cope with higher flux of particles
  • Minos-like scintillator bars readout through WLS fibers and Silicon Photo-Multipliers
  • 8-9 active
  • layers

Endcap

Barrel

μ

the prototype
The Prototype

Iron

Active Layers

(Pizza Boxes)

Prototype

  • Iron: 60x60x92 cm3, 9 slots for the active layers
  • up to 9 active layers readout together
  • 4 Time Readout (TDC-RO) “standard “
  • 4 Binary Readout (BiRo) “standard”
  • 4 special modules to study different
  • fibers or SiPM geometry

Active Layer

(“pizza box”)

summary of activities
Summary of Activities
  • Installation: March 1-4
  • ORC walkthrough: March 5, first beam: March 5
  • Trigger timing and apparatus setting up
  • Data taking summary:
    • 8,6,5 GeV
    • Cherenkov scan
    • Muons:
      • Selected with Cherenkov (C1)
      • Selected with downstream scintillators (S3 and S4)
    • Pions
      • Selected with Cherenkov (C1)
    • Control triggers
      • No Cherenkov
      • Only Electrons (C2) veto
  • Still 16 hours of beam (until 6 am)
cherenkov scans
Cherenkov Scans
  • Fundamental importance to collect clean samples of muons and pions
  • very important to understand how well the Cherenkov tags the particles
  • Scan needed for each beam momentum: 8, 6, & 5 GeV/c
cherenkov pressure s can 8 gev n 2
Cherenkov Pressure Scan: 8 GeV (N2)

July-11 scan

Pion

peak

Muon peak

March-12 scan

cherenkov p ressure scan 6 gev n 2
Cherenkov Pressure Scan: 6 GeV (N2)

July-11 scan

March-12 scan

event samples
Event Samples…

Hit channel

time (samples of of 12.5 nsec)

Detector hit map for a sample of Muons at 8 GeV

event samples1
Event samples…

Hit channel

time (samples of of 12.5 nsec)

Detector hit map for a sample of Pions at 8 GeV

summary
Summary
  • Took data at 8, 6, & 5 GeV
  • Cherenkov seems to be more efficient at 6 and 5 GeV than in October
  • 24h (March 9th) running since Friday
  • Apart from a few interruptions at the beginning (March 6th) the beam was very stable
  • Took data until morning of March 14th then moved equipment out of the area