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US Test beam data analysis & validation of OSCAR/ORCA Tim Cox, UC Davis Nikolai Terentiev*, CMU CMS Physics Week Fermilab Apr 12 - 15, 2005.

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Presentation on theme: "US Test beam data analysis & validation of OSCAR/ORCA Tim Cox, UC Davis Nikolai Terentiev*, CMU CMS Physics Week Fermilab Apr 12 - 15, 2005."— Presentation transcript:

1 US Test beam data analysis & validation of OSCAR/ORCA Tim Cox, UC Davis Nikolai Terentiev*, CMU CMS Physics Week Fermilab Apr 12 - 15, 2005

2 T. Cox (UC Davis), N.Terentiev (CMU) CMS Physics Week Fermilab Apr 12-15, 2005 2 Outline Status of work on section in Physics TDR, Vol 1 (T. Cox, UC Davis ) Endcap Muon Cathode Strip Chambers (CSC) test beam raw data vs ORCA simulation/digitization The time profile of signal for the cathode strips. The ratio of charges for two adjacent cathode strips. Plans

3 T. Cox (UC Davis), N.Terentiev (CMU) CMS Physics Week Fermilab Apr 12-15, 2005 3 Status of work on section in Physics TDR, Vol 1 What this is about “Test beam data analysis and validation of OSCAR simulation”, one of the Muon PTDR tasks listed on http://cmsdoc.cern.ch/cms/Physics/muon/www/management/ tasks_page.html http://cmsdoc.cern.ch/cms/Physics/muon/www/management/ tasks_page.html Good: more people actually working on this than mentioned there. Details in https://uimon.cern.ch/twiki/bin/view/CMS/Muonhttps://uimon.cern.ch/twiki/bin/view/CMS/Muon Bad: work is really just starting so few real results. Bad: we haven’t got a list of ‘target’ plots yet. Please suggest such plots - evidence and support for reliability of simulation and reconstruction. (I presume we’d even like to know the detectors really work to measure what we expect they will.)

4 T. Cox (UC Davis), N.Terentiev (CMU) CMS Physics Week Fermilab Apr 12-15, 2005 4 Task ‘Test beam data analysis and validation of OSCAR simulation’ DTsCSCsRPCsOSCARNeutron bkgd Work underway? yes no?–yes People known to be contributing Cerminara Marcellini Hoepfner (Amapane) Belotelov Breedon Chertok Cox Meshcheryakov Moissenz Mumford Terentiev ?ArceSrimanobhas (Phat) Arce Cox Comments Web page: https://uimon. cern.ch/twiki/ bin/view/CMS/ DTTestBeam Much work is getting going… need changes in ORCA for test beam data (& geom) Is anybody there? OSCAR general support, & knowledge of validation Phat has restarted work under Pedro’s guidance. Status of work on section in Physics TDR, Vol 1

5 T. Cox (UC Davis), N.Terentiev (CMU) CMS Physics Week Fermilab Apr 12-15, 2005 5 Status of work on section in Physics TDR, Vol 1 Conclusions Good: work underway for DTs and CSCs. Bad: no RPC-related program of work? Suggestions for what plots the task needs to supply for the PTDR, from physics, hardware, or software viewpoint, gratefully accepted.

6 T. Cox (UC Davis), N.Terentiev (CMU) CMS Physics Week Fermilab Apr 12-15, 2005 6 CSC test beam data vs ORCA Sep-Oct ’04 EMU CSC Beam Test Asynchronous (1.5 week). 25 ns structured beam (1 week). Setup features 5 CSCs, 3 RPCs, HCAL. 4 peripheral crates. New DDU/DCC. TrackFinder crate (SP1+SP2). Trigger: SC (Scint. Counters), TF (Track Finder). Details and main results in EMU Oct 2004 meeting talks by F.Geurts, D.Acosta, A.Korytov, M.Von der Mey, J.Hauser, S.Durkin.

7 T. Cox (UC Davis), N.Terentiev (CMU) CMS Physics Week Fermilab Apr 12-15, 2005 7 CSC test beam data vs ORCA CSC – Cathode Strip Chamber, six layers, two coordinates in each layer Anode wires in azimuthal, cathode strips in radial directions. Provides ~ 99% efficient 25 ns bunch crossing identification (anode front end + ALCT). Precise measurement of the azimuthal coordinate ( ~ 150  ) by cathode strips. Trigger primitives for Level-1 trigger system.

8 T. Cox (UC Davis), N.Terentiev (CMU) CMS Physics Week Fermilab Apr 12-15, 2005 8 CSC test beam data vs ORCA Test beam data (see details in www-hep.phys.cmu.edu/cms/Beam_Test_Sep_2004/tb.html) www-hep.phys.cmu.edu/cms/Beam_Test_Sep_2004/tb.html CERN H2 150 GeV Muons. 25 ns structured beam. Require single muon track in analysis (one anode wire hit, one cathode comparator hit per CSC layer). ORCA (for EMU CSC digitization in the CMS detector, not yet in the beam test) The single muon particle gun sample, Pt=100 GeV. Flat in Phi over all Phi. Flat in Eta from -2.5 to 2.5. Used versions are OSCAR_3_2_2 and ORCA_8_1_3 (newer versions have the same code for the CSC raw data).

9 T. Cox (UC Davis), N.Terentiev (CMU) CMS Physics Week Fermilab Apr 12-15, 2005 9 CSC test beam data vs ORCA Test beam - the time profile of signal for the cathode strip with max. amplitude. Data from CSC ME3/2. Normalize to area in each event, average thru all events. Time bin 50 ns.

10 T. Cox (UC Davis), N.Terentiev (CMU) CMS Physics Week Fermilab Apr 12-15, 2005 10 CSC test beam data vs ORCA ORCA - the time profile of signal for the cathode strip with max. amplitude. All CSCs (Station 1 excluded). Max. amplitude always in the time bin 4. Normalize to area in each event, average thru all events. Time bin 50 ns.

11 T. Cox (UC Davis), N.Terentiev (CMU) CMS Physics Week Fermilab Apr 12-15, 2005 11 CSC test beam data vs ORCA ORCA vs data for the time profile of the cathode strip signal Reasonable agreement.

12 T. Cox (UC Davis), N.Terentiev (CMU) CMS Physics Week Fermilab Apr 12-15, 2005 12 CSC test beam data vs ORCA Test beam - the ratio of charges Q (Log10) for two adjacent strips (Nmax is a strip with Qmax) Data from CSC ME3/2. At 0 – track between strips Nmax-1 and Nmax. At ~-2 – track between strips Nmax and Nmax+1. No correction for beam profile within two strips.

13 T. Cox (UC Davis), N.Terentiev (CMU) CMS Physics Week Fermilab Apr 12-15, 2005 13 CSC test beam data vs ORCA ORCA - the ratio of charges Q (Log10) for two adjacent strips (Nmax is a strip with Qmax) Cut 1.3 < EtaGen < 1.6 (~ as in the beam test). All ME234/2 CSCs (Station 1 is excluded). Preliminary, need much more statistics to use the same geometry as in the beam test.

14 T. Cox (UC Davis), N.Terentiev (CMU) CMS Physics Week Fermilab Apr 12-15, 2005 14 CSC test beam data vs ORCA ORCA vs data (preliminary) Occupancies from previous figures are normalized to the distribution areas. Reasonable agreement. in case of the track between strips. ORCA needs more study in other cases. To adjust ORCA for the beam test conditions in the final comparison.

15 T. Cox (UC Davis), N.Terentiev (CMU) CMS Physics Week Fermilab Apr 12-15, 2005 15 Plans Continue ORCA with test beam data comparison Cathode strip pedestal RMS, amplitudes, noise, crosstalk. Cathode strip comparator thresholds and timing. Anode front end thresholds, timing. Tracking in the beam test, cathode strip coordinate resolution. The beam test option in ORCA is greatly needed Work is in progress (R. Wilkinson, A. Tumanov, T. Cox, J. Mumford,…). Picture/accompanying text selection for the Physics TDR, Vol 1

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