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Neutrino Oscillation Experiments



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4 Neutrino Oscillation Experiments Faculty Gary Feldman Postdocs Mayly Sanchez Graduate students Andre Lebedev Sharon Seun Engineers Nathan Felt John Oliver Contents 4 Neutrino Oscillation Experiments 4 1 1 The MINOS Experiment 3 4 1 1 Goals of the Experiment 3 4 1 2 Overview of MINOS 3 4 1 3 MINOS Physics 7 4 2 Harvard Contributions to MINOS 10 4 3 Far Detector Electronics 15 4 3 1 System Description 15 4 3 2 VA Characteristics 17 4 3 3 Electronics Production and Installation 22 Development of Event Reconstruction Code 24 4 4 1 Kalman Filter Implementation 24 4 4 2 Calibration Using Cosmic Muons 32 4 4 3 Transition to Object Oriented Code 33 Reconstruction and Offline Analysis 36 4 5 1 Track Reconstruction 39 4 5 2 Upward Going Muon Analysis 40 4 5 3 Contained Event Analysis 47 4 6 e Analysis 53 4 7 The MIPP Experiment 53 4 7 1 Hadron production uncertainties 54 4 7 2 The MIPP Experiment for MINOS 54 4 7 3 The MIPP Layout 59 4 4 4 5 2 Section 4 Neutrino Oscillation Experiments 4 8 4 9 4 7 4 Harvard Responsibilities in the MIPP Experiment 59 4 7 5 The RICH Detector 63 4 7 6 RICH Reconstruction 63 4 7 7 TPC Software 65 4 7 8 MIPP Data Acquisition 69 The Off Axis Experiment 71 4 8 1 Off Axis Technology Choices 71 4 8 2 Off Axis Performance 73 4 8 3 Off Axis Schedule 74 NOMAD Collaboration Publications 75 Section 4 Neutrino Oscillation Experiments 3 The current activities of the neutrino oscillation group is the preparation of the MINOS experiment a subsidiary experiment MIPP which will measure the hadron production from the MINOS target in a way that will be directly applicable to the MINOS analysis and the Off Axis experiment which will go beyond MINOS in its ability to measure the currently unknown neutrino parameters The group s previous experiment was NOMAD We will not report on it here since Harvard contributions to it have been reported in previous reports and there is very little group activity in that experiment now However there are still papers coming from



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