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Calorimeter Cosmic-ray Commissioning Run Dec ’00 – Jan ‘01

Calorimeter Cosmic-ray Commissioning Run Dec ’00 – Jan ‘01. Lar in CC and ECN; HV turned on (2kV) for both Two quadrants of CC (CCNE+CCSE) fully populated with BLS cards and preamps

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Calorimeter Cosmic-ray Commissioning Run Dec ’00 – Jan ‘01

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  1. Calorimeter Cosmic-ray Commissioning Run Dec ’00 – Jan ‘01 • Lar in CC and ECN; HV turned on (2kV) for both • Two quadrants of CC (CCNE+CCSE) fully populated with BLS cards and preamps • Pedestal calibration runs taken with online system, automatically downloaded to Oracle dB and extracted to make ADC pedestal and limit download files • Pedestal subtraction and zero suppression modes turned on in BLS/ADC • Multi-crate data taken (few Hz) with a few muon scintillator tiles to look for m.I.p.’s in calorimeter • Timing for SCA readout in question and still being investigated so unclear if coincidence with muon L1 trigger could be seen (though most people in the control room believe they saw something!) • Online calorimeter examines and detector display were running during cosmic data taking • Timing issues being worked on this week to read out a single ICD tile with muon chambers generating the L1 trigger • Problems with reconstruction of cosmic data being investigated

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