E 906DrellYan Monte Carlo Data Acquisition and Data

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E 906/Drell-Yan: Monte Carlo, Data Acquisition and Data Analysis Paul E. Reimer n Expected

E 906/Drell-Yan: Monte Carlo, Data Acquisition and Data Analysis Paul E. Reimer n Expected Rates and Monte Carlo (WBS 2. 5. 1) n Data Acquisition (WBS 2. 4) – CODA – Latched data – TDC data n Data Analysis (WBS 2. 5. 2)

Data Sources Station 2 & 3 Drift Chambers 1700 Channels Multi-hit TDC’s Station 4

Data Sources Station 2 & 3 Drift Chambers 1700 Channels Multi-hit TDC’s Station 4 Prop Tubes 400 Channels Bit latches MWPC 5500 Channels bit latches 11 December 2006 256 Hodoscopes—bit latches E 906/Drell-Yan Review: Data Acquisition and Analysis 2

Data Acquisition Framework: CODA WBS 2. 4. 1 n The CODA (CEBAF Online Data

Data Acquisition Framework: CODA WBS 2. 4. 1 n The CODA (CEBAF Online Data Acquisition) software frame work will be used for Data Acquisition Take from D. Abbot, CODA Users Workshop 2004 11 December 2006 E 906/Drell-Yan Review: Data Acquisition and Analysis 3

DAQ: Latch Electronics Detector n Station 1 MWPC, Station 4 Prop. Tubes Tracking and

DAQ: Latch Electronics Detector n Station 1 MWPC, Station 4 Prop. Tubes Tracking and Hodoscope readout n Readout will be based on the Nevis system n Equipment recovered from E 866/Nu. Sea Hodoscopes and E 871/Hyper. CP (approx. 20 k ch. ) Total – Ansley delay cables – Coincidence Registers (CR) – Encoder board (ENC) and – FIFO cards n Rate will not be a problem— Hyper. CP had 20 k channels and a trigger rate of 75 k. Hz—deadtime of approx. 3 s Station 1 MWPC Channel Count 5500 Station 4 Prop. Tubes 400 All Stations 256 6156 From Y. C. Chen et al. NIM A 455 (2000) 424 11 December 2006 E 906/Drell-Yan Review: Data Acquisition and Analysis 4

DAQ: Multi Hit TDC WBS 2. 4. 2, 2. 4. 3 n Station 2

DAQ: Multi Hit TDC WBS 2. 4. 2, 2. 4. 3 n Station 2 and 3 drift chambers readout via multi-hit TDC (1700 channels plus spares) n Fermilab Prep has sufficient channels of Le. Croy 3377 FERA TDC n Dead time of 1. 8 s + 0. 1 s/hit n Fermilab PREP recommends testing these modules prior to experiment and has offered to supply test procedures and setup. E 906 will supply labor n FERA readout options under exploration – Le. Croy 1190 FERA to VME memory interface – Struck SIS 3700 32 -bit ECL input FIFO (VME module) http: //www. struck. de/sis 3700. htm – Fermilab DYC 3 FERA to RS 485 interface http: //ppd. fnal. gov/elec/dyc 3 nov. html 11 December 2006 E 906/Drell-Yan Review: Data Acquisition and Analysis 5

Data Storage n Total data set for 5. 2£ 1018 protons is approximately 4

Data Storage n Total data set for 5. 2£ 1018 protons is approximately 4 TB (1 k. Hz/2£ 1012 protons £ 1. 5 k. B event size) n Temporarily store data locally on disk n Background spool data to Feynman Computing Center for long term storage (discussed with Fermilab CD) – Sustained data rate of 125 k. B/s (easily within network capacity) 11 December 2006 E 906/Drell-Yan Review: Data Acquisition and Analysis 6

Analysis Software WBS 2. 5. 2 n Modification of existing E 866 analysis codes

Analysis Software WBS 2. 5. 2 n Modification of existing E 866 analysis codes – Track recognition, trace back and energy loss algorithms are identical – E 866 code already ported to Fermilab computing farms—probably not necessary. – New event decoding routines needed n Computing requirements – Minimal—E 866 event analysis rate was approx. 20 ms/event on vintage 1997 HP PA 8000 0. 18 GHz – Scale to today: Should be able to do real time analysis of all data on small cluster (1 to 4) Linux-based PC’s – We do not anticipate heavy demand on computing resources 11 December 2006 E 906/Drell-Yan Review: Data Acquisition and Analysis 7

Monte Carlo simulations n GEANT-Based Monte Carlo – Simulation of detector through end of

Monte Carlo simulations n GEANT-Based Monte Carlo – Simulation of detector through end of 1 st magnet – Used for configuration of hadron absorber within aperture of 1 st magnet and particle rates at Station 1 – Extend simulation to entire spectrometer for data analysis (WBS 2. 5. 1 Abilene, Los Alamos, Argonne) n Fast. MC – Modified version of E 866/E 772 “fast” Monte Carlo Code to include E 906 geometry. – Only traces muons from Drell-Yan events, and the decays of J/ , 0, 00, D (D-bar) and K decays. – Magnetic field is simplified, but muon energy loss and multiple scattering are included. – Verified with • E 866 rate and resolution comparisons • full GEANT simulation of target, beam dump and absorber 11 December 2006 E 906/Drell-Yan Review: Data Acquisition and Analysis 8

Conclusions n DAQ – CODA framework from JLab – Latched readout via Nevis electronics

Conclusions n DAQ – CODA framework from JLab – Latched readout via Nevis electronics – Drift Chambers via Le. Croy 3377 TDC n Data Analysis – Code is straight forward modification of E 866 Analysis – Data storage requirements are “small” – CPU requirements are small 11 December 2006 E 906/Drell-Yan Review: Data Acquisition and Analysis 9