1 / 24

MICE Beamline PID w Aerogel Counters

MICE Beamline PID w Aerogel Counters. Lucien Cremaldi Aerogel R&D and Test Beam Ghislain Gregoire Design and Simulation Don Summers Aerogel Procurement & Mirrors Jim Reidy Jr. -Quarknet Teacher - TB Aerogel Counter David Sanders, Peter Sonnek, Brooke Rankins- R&D, DAQ

kezia
Download Presentation

MICE Beamline PID w Aerogel Counters

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. MICE Beamline PID w Aerogel Counters • Lucien Cremaldi Aerogel R&D and Test Beam • Ghislain Gregoire Design and Simulation • Don Summers Aerogel Procurement & Mirrors • Jim Reidy Jr. -Quarknet Teacher - TB Aerogel Counter • David Sanders, Peter Sonnek, Brooke Rankins- R&D, DAQ • Mike Reep and Scott Watkins- Machine Shop • Romulus Godang - GEANT4, RECO • Matsusita- Aerogel Samples • Hideyuki Sakamoto G4MICE • Vittorio Palladino PID Watchdog Lucien Cremaldi*, MICE Collaboration Meeting Oct 8-11, RAL.,

  2. 2 Threshold Aerogel Counters Aerogel Counter Lucien Cremaldi*, MICE Collaboration Meeting Oct 8-11, RAL.,

  3. ISIS Beam Line A C B

  4. Beam Spot at z = 20.76m • 4x4 Aerogel Array Provides • ample coverage. • ~95% containment in 3x3. • Array is offset from x,y = 0,0. • Triangle tiles can reduce cost. • Variation of Beam Spot size • over counter length is minimal. Triangle tiles Lucien Cremaldi*, MICE Collaboration Meeting Oct 8-11, RAL.,

  5. Matsushita Electric Works 1.030+-0.001 Lucien Cremaldi*, MICE Collaboration Meeting Oct 8-11, RAL.,

  6. Matsushita Aerogel Samples n=1.03 n=1.07(1.08) n=1.12 115 x 115 x 10.5 mm3 115 x 115 x 11.5 mm3 115 x 115 x 11.5 mm3 Lucien Cremaldi*, MICE Collaboration Meeting Oct 8-11, RAL.,

  7. Matsushita Aerogel Samples(2) Lucien Cremaldi*, MICE Collaboration Meeting Oct 8-11, RAL.,

  8. Forward Transmittance T = A exp{ -t C/4}Rayleigh-like C =0.041 1.03 n A C 1.03 98.99 0.041 1.08 98.84 0.252 1.12 96.96 0.638 t(nm) sample thickness (nm) wavelength 0.252 1.07 0.638 1.12 • Blue photons are re-scattered w dN/dq = 1+cos2. • Absorption believed to be minimal. Lucien Cremaldi*, MICE Collaboration Meeting Oct 8-11, RAL.,

  9. Scattering Length T=To exp(-x/xo) Lucien Cremaldi*, MICE Collaboration Meeting Oct 8-11, RAL.,

  10. Muon Momentum Sprectra • Run Configuration of good Mu/Pi (T.Roberts) • Muons Peaking at 220 MeV/c • Pion show high energy tail (p>350 MeV/c removed by tracking??) 16200 280 Lucien Cremaldi*, MICE Collaboration Meeting Oct 8-11, RAL.,

  11. PE Threshold Plots Lucien Cremaldi*, MICE Collaboration Meeting Oct 8-11, RAL.,

  12. Muon Detection Efficiency The efficiency drop at low momenta is due to the proximity of the muon threshold in n=1.12 aerogel The efficiency at low momenta could be improved by increasing the thickness of the radiator Lucien Cremaldi*, MICE Collaboration Meeting Oct 8-11, RAL.,

  13. Momentum Distributions of Triggers Remember: the pion sample is exaggerated by a factor 40 112on/107off 112on/107on Misidentified pions in the range 285 to 320 MeV/c Unambiguous separation of muons and pions (32 pions / 385 muons) There is no need for a momentum cut i.e. an actual pion impurity in this configuration only

  14. Purity Matrix(4) Purity 107off/112off 107off/112on 107on/112on • Purity = Percent of good muons for a particular Trigger Configuration. • Muon Purity >99% Pion Misid < 1.2 x 10-4 Lucien Cremaldi*, MICE Collaboration Meeting Oct 8-11, RAL.,

  15. Aerogel CounterDesign (1) Lucien Cremaldi*, MICE Collaboration Meeting Oct 8-11, RAL.,

  16. Aerogel Counter Design (2) Lucien Cremaldi*, MICE Collaboration Meeting Oct 8-11, RAL.,

  17. Dimensions (3) Lucien Cremaldi*, MICE Collaboration Meeting Oct 8-11, RAL.,

  18. Radiator (4) Collection Mirror 3mm Lexan Sheet Radiator Lucien Cremaldi*, MICE Collaboration Meeting Oct 8-11, RAL.,

  19. Conical Mirror (4) 2-axis elliptical cone Lucien Cremaldi*, MICE Collaboration Meeting Oct 8-11, RAL.,

  20. Paper Model (5) Lucien Cremaldi*, MICE Collaboration Meeting Oct 8-11, RAL.,

  21. Test Beam(1) aerogel 200 GeV/c p Tyvek Rotating Table • Fermilab Meson Test July'06 • Beam 150 GeV p (b=1) • Aerogel 1.03, 1.07, 1.12 Lucien Cremaldi*, MICE Collaboration Meeting Oct 8-11, RAL.,

  22. Test Beam(2) 107 ADC counts 20 PE 112 ADC counts 24 PE Lucien Cremaldi*, MICE Collaboration Meeting Oct 8-11, RAL.,

  23. Road Map Price (2 det) -64 Aerogel x $350USD ~ $25K -Reflectors $5K -Steele Boxes $5K -Table $5K -Installation and checkout $5K -Shipping $5K -(8-12) PMTs HARP ok ~50-60K -Parts Fabricated in UM shop. -Mechanical Drawings GG. -Mirrors Coated by Outside Vendor. Summer ‘06 = 1 @ FNAL1x1x1 modulewhite reflectorMeasure pe yields Fall- 06Mechanical fabrication Reflectors/ConesAerogel purchase?? May ‘07Mechanical Assembly Summer ‘07Aerogel Installation at RAL Lucien Cremaldi*, MICE Collaboration Meeting Oct 8-11, RAL.,

  24. Summary • Aerogel Technology well suited to augment m p PID in MICE beamline. • Photoelectron yield adequate for high efficiency and low misid rate. • Mechanical design highly advanced. • Fabrication staightforward. • Ready to install in MICE in Fall ‘07. • TRD Update & Saftey Sheets completed (Ghislain). • PID Review set for Oct. 12-13 at RAL Meeting. Lucien Cremaldi*, MICE Collaboration Meeting Oct 8-11, RAL.,

More Related