Dhiman Chakraborty Cal mu p-id test-beam summary LC workshop Cornell 16

Dhiman Chakraborty Cal+mu+p-id+test-beam summary LC workshop, Cornell, 16 July, '03

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

Performance goals • Jet energy measurement precise enough to separate Ws and Zs in hadronic decays on an event-byevent basis: ΔE = 0. 3 sqrt(E [Ge. V]) • Use track momenta for charged clusters; cal only for neutrals: particle-flow algorithms • Identify non-pointing neutral clusters • Excellent hermeticity Dhiman Chakraborty Cal+mu+p-id+test-beam summary LC workshop, Cornell, 16 July, '03 3

ECal • • • Si-W (Oregon+SLAC) Si-W-Scint (Kansas) Scint-W (Colorado) Crystal (Iowa+Caltech) Cerenkov-compensated (Iowa+Fairfield) All analog Dhiman Chakraborty Cal+mu+p-id+test-beam summary LC workshop, Cornell, 16 July, '03 4

Si-W ECal • • • 0. 5 cm x 0. 5 cm 0. 3 mm Si 3. 5 mm/layer 30 layers Rin = ~142 cm Zmax = 2. 1 m 20 X 0, 0. 8λ 0 Sampling ~2% 5 T field Dhiman Chakraborty • 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 Cal+mu+p-id+test-beam summary LC workshop, Cornell, 16 July, '03 5

Si-W-Scint. & Scint. -W • 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 Dhiman Chakraborty Cal+mu+p-id+test-beam summary LC workshop, Cornell, 16 July, '03 6

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

HCal • 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 • ~ 4λ 0, ~6% sampling • 1 -10 cm 2 cells Dhiman Chakraborty Cal+mu+p-id+test-beam summary LC workshop, Cornell, 16 July, '03 8

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 Dhiman Chakraborty Cal+mu+p-id+test-beam summary LC workshop, Cornell, 16 July, '03 9

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 Dhiman Chakraborty Cal+mu+p-id+test-beam summary LC workshop, Cornell, 16 July, '03 10

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 Dhiman Chakraborty Cal+mu+p-id+test-beam summary LC workshop, Cornell, 16 July, '03 11

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 Dhiman Chakraborty Cal+mu+p-id+test-beam summary LC workshop, Cornell, 16 July, '03 12

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 Dhiman Chakraborty Cal+mu+p-id+test-beam summary LC workshop, Cornell, 16 July, '03 13

LC TB Goals and Organization • Detector groups have made significant progress • Individual detector groups have been working on TB efforts independently – ECAL and HCAL testbeam performed already in Europe and Asia – US Calorimeter group leading the effort – Some documents for requirements exist: e. g. Calorimeter group • It is time for more systematic organization for a coherent effort for Test Beam – Better if groups work together for preparing common needs – One communication channel to outside Provides stronger arguments and accomplish better supports – Provide focus to detector development efforts • Information on available TB facilities compiled – E. Ramberg from FNAL gave detailed status report on MTBF • Need to collaborate with European and Asian colleagues Dhiman Chakraborty Cal+mu+p-id+test-beam summary LC workshop, Cornell, 16 July, '03 14

Summary of TB Needs Dhiman Chakraborty Cal+mu+p-id+test-beam summary LC workshop, Cornell, 16 July, '03 H. E. Fisk 15

• Kick-off LCTB group with the responsibilities – Sets the goals and determines directions for coherent TB preparation for all detector groups – Keep up with progress through regular meetings – Sets priorities if conflict arises – Represents LC TB efforts to outside and facilities – Collaborate with European and Asian TB groups • Discussion session had some 30 members – Set action items for the next few months • Setup communication (mail list, web page and meetings) by Sept. , 2003 • Compile a TB requirement document that includes all detector groups, if possible, in all regions, by Jan meeting • Contact the leaders of LCRD and UCLC for separate sections in the upcoming proposals: Sept. 2003 Dhiman Chakraborty Cal+mu+p-id+test-beam summary 16 • Complete the list of subgroup reps. : Sept. 2003 LC workshop, Cornell, 16 July, '03

Subgroups Groups Cal TRK MUO Repond/Magill D. Karlen Fisk will take to the group… Beam Monitoring M. Woods will work on the document Beam-line Will recruit later Trigger/DAQ Will recruit later Facility Infrastructure Will recruit later Dhiman Chakraborty Cal+mu+p-id+test-beam summary LC workshop, Cornell, 16 July, '03 17

Muon & PID Summary R. Wilson – CSU: Particle ID Software Infrastructure l Embedding PID in the overall LCD/JAS s/w infrastructure? l Fast Simulation/Reconstruction : d. E/dx tool; code checks; muon fast simulation. l Cross subsystem PID. A. Maciel – NIU: Simulation Software Development l Extension of generalized and universal simulation framework – new worldwide effort. l Planar muon detector example with 45 o strips. Big advance! Dhiman Chakraborty u vs. v for 2 tracks Cal+mu+p-id+test-beam summary LC workshop, Cornell, 16 July, '03 18

Muon & PID Summary (cont. ) C. Milstene – NIU: Muon ID Software Development l Resurrection of m code. l Verification of M. Piccolo’s muon ID for single particles and b-b events. G. Fisk – Fermilab: Scintillator Muon Detector Prototype Planes: Description l General description of scintillator strip layout. M. Wayne – UND: Fiber Connections & Routing l Discussion of fiber associated with bringing the WLS light out of the scintillator strips and onto a multi-anode photomultiplier. Dhiman Chakraborty Cal+mu+p-id+test-beam summary LC workshop, Cornell, 16 July, '03 19

Muon & PID Summary (cont. ) P. Karchin – WSU: MAPMT Readout and Calibration Issues l Test results on Hamamatsu M-16 multi-anode PMT. Calibration ideas. R. Wilson – CSU Geiger Photodiode Array Readout Test l Description of tests performed on prototype APD (avalanche photodiode). M. Piccolo – INFN RPC Prototype Design Issues Plateau l First test results for new glass RPCs. curve l Rate capability studies l Test Beam at Frascati Dhiman Chakraborty Cal+mu+p-id+test-beam summary LC workshop, Cornell, 16 July, '03 20

Prototype Module Layout 5. 0 m 2. 5 m 43 full strips 3. 6 m (L) x 4. 1 cm (W) x 1 cm (T) 43 short strips 3. 6 m => 0 m 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. 2 mm dia) fibers/pix * 16(4 x 4 mm 2) pixels => Equivalent of One MAPMT/prototype plane Dhiman Chakraborty Cal+mu+p-id+test-beam summary LC workshop, Cornell, 16 July, '03 21