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Calorimetry + muon/p-id summary

Calorimetry + muon/p-id summary. Dhiman Chakraborty Northern Illinois University. Calorimetry. Performance goals Electromagnetic Calorimetry (ECal) Hadronic Calorimetry (HCal) Digital Analog Particle-flow algorithms (formerly energy-flow) Simulations

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Calorimetry + muon/p-id summary

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  1. Calorimetry + muon/p-id summary Dhiman Chakraborty Northern Illinois University

  2. Calorimetry • Performance goals • Electromagnetic Calorimetry (ECal) • Hadronic Calorimetry (HCal) • Digital • Analog • Particle-flow algorithms (formerly energy-flow) • Simulations • Particle identification (Digi/Ana) • Test Beam Calorimetry + muon/p-id summary LC workshop, Cornell, 16 July, '03

  3. Performance goals • Jet energy measurement precise enough to separate Ws and Zs in hadronic decays on an event-by-event basis: ΔE = 0.3 sqrt(E [GeV]) • Use track momenta for charged clusters; cal only for for neutrals: particle-flow algorithms • Identify non-pointing neutral clusters • Excellent hermeticity Calorimetry + muon/p-id summary LC workshop, Cornell, 16 July, '03

  4. ECal • Si-W (Oregon+SLAC) • Si-W-Scint (Kansas) • Scint-W (Colorado) • Crystal (Iowa+Caltech) • Cerenkov-compensated (Iowa+Fairfield) All analog Calorimetry + muon/p-id summary LC workshop, Cornell, 16 July, '03

  5. 0.5 cm x 0.5 cm 0.3 mm Si 3.5 mm/layer 30 layers Rin = ~142 cm Zmax = 2.1m 20X0, 0.8λ0 Sampling ~2% 5T field Small Rm and fine segmentation aids PFAs Europe on board Design well under way Electronics rough draft complete Mechanical conceptual design started. Tests, more simulations in the offing Si-W ECal Calorimetry + muon/p-id summary LC workshop, Cornell, 16 July, '03

  6. More affordable than Si-W Somewhat coarser segmentation – limited by fiber routing Fine sampling and timing Efficiency and uniformity need to be established – gang 3-5 tiles Choice of photodet, fiber coupling … Europe, Asia on board on scint. option Detailed simulation studies in progress Si-W-Scint. & Scint.-W Calorimetry + muon/p-id summary LC workshop, Cornell, 16 July, '03

  7. Inexpensive Excellent E resol. (100% sampling) No longitudinal segmentation – limitation to PFA? Still in early stage Extensive simulations needed and planned Cerenkov-compensated precision calorimetry Uses Cerenkov light to measure e,γ; ionization for hadrons, e – combine the two Not much known Crystal Cerenkov Calorimetry + muon/p-id summary LC workshop, Cornell, 16 July, '03

  8. RPC – Digital (ANL, U. Chicago, Boston, FNAL) Scintillator – Digital (?) (NIU, UIC) GEM – Digital (U Texas - Arlington) Scintillator – Analog (Colorado) ~34 layers, ~3.5 cm thick w/ 2.5 cm thick stainless steel or similar absorber ~ 4λ0, ~6% sampling 1-10 cm2 cells HCal Calorimetry + muon/p-id summary LC workshop, Cornell, 16 July, '03

  9. RPC DHCal • Multiple gas gaps, glass substrate, graphite/ink resistive layer • Avalanche mode operation • Prototypes constructed, electronics, DAQ in place, initial studies are very encouraging • Extensive testing, readout chip design in progress • Backed by detailed simulation Calorimetry + muon/p-id summary LC workshop, Cornell, 16 July, '03

  10. Scintillator DHCal • Proven technology • Somewhat larger cells • Cheap production by in-house extrusion • MANY options for fiber routing, surface treatment, groove shape, transducer tested with encouraging results • Cosmic ray prototype stack ~ready • Bolstered by extensive simulation Calorimetry + muon/p-id summary LC workshop, Cornell, 16 July, '03

  11. GEM DHCal • New technology • Double-gap • First prototype w/electronics assembled, operational • Initial tests with CR, source at par with results shown by developers • Multichannel prototypes under construction • Backed up by extensive simulation Calorimetry + muon/p-id summary LC workshop, Cornell, 16 July, '03

  12. Scint. HCal (analog) • Similar to Scint DHCal, but ~2.5 times larger tiles • Improve lateral resolution by staggering • Cell prototyping done • Stack prototype next • Simulation studies in progress Calorimetry + muon/p-id summary LC workshop, Cornell, 16 July, '03

  13. Particle-flow algorithms • Several calorimeter groups are deeply involved in simulation and software development as well as PFA development (NIU, ANL, Colorado, UTA, …) • First jet reconstruction results are most encouraging, prompting us to more realistic simulations and sophisticated reco algorithms • Much effort invested Calorimetry + muon/p-id summary LC workshop, Cornell, 16 July, '03

  14. Muon & PID Summary R. Wilson – CSU: Particle ID Software Infrastructure • Embedding PID in the overall LCD/JAS s/w infrastructure? • Fast Simulation/Reconstruction : dE/dx tool; code checks; muon fast simulation. • Cross subsystem PID. A. Maciel – NIU: Simulation Software Development • Extension of generalized and universal simulation framework – new worldwide effort. • Planar muon detector example with 45o strips. Big advance! u vs. v for 2 tracks Calorimetry + muon/p-id summary LC workshop, Cornell, 16 July, '03

  15. Muon & PID Summary (cont.) C. Milstene – NIU: Muon ID Software Development • Resurrection of m code. • Verification of M. Piccolo’s muon ID for single particles and b-b events. G. Fisk – Fermilab: Scintillator Muon Detector Prototype Planes: Description • General description of scintillator strip layout. M. Wayne – UND: Fiber Connections & Routing • Discussion of fiber associated with bringing the WLS light out of the scintillator strips and onto a multi-anode photomultiplier. Calorimetry + muon/p-id summary LC workshop, Cornell, 16 July, '03

  16. Muon & PID Summary (cont.) P. Karchin – WSU: MAPMT Readout and Calibration Issues • Test results on Hamamatsu M-16 multi-anode PMT. Calibration ideas. R. Wilson – CSU Geiger Photodiode Array Readout Test • Description of tests performed on prototype APD (avalanche photo-diode). M. Piccolo – INFN RPC Prototype Design Issues • First test results for new glass RPCs. • Rate capability studies • Test Beam at Frascati Plateau curve Calorimetry + muon/p-id summary LC workshop, Cornell, 16 July, '03

  17. Prototype Module Layout 5.0 m 2.5m 43 full strips 43 short strips 3.6m (L) x 4.1cm (W) x 1cm (T) 3.6m => 0m long Read out: both ends of full strips; one end of short strips (except the shortest 22). 2*(43 + 21) fibers/side =128 channels = 8 (1.2mm dia) fibers/pix * 16(4 x 4mm2) pixels => Equivalent of One MAPMT/prototype plane Calorimetry + muon/p-id summary LC workshop, Cornell, 16 July, '03

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