The MuLan Detector Calibration System Christopher J. Church James Madison University April 23, 2005
Overview: μLan Project Detector Calibration System Current Status Data Analysis Things to come
μLan Project: What is it? Collaborative effort to achieve a one part per million (PPM) measurement of the muon lifetime The Paul Scherrer Institut Villigen, Switzerland
The Experiment: Detectors Photomultipl ier Tubes Scintillation Material Light Guides e+e+e+e+
Detector Calibration System The detector calibration system allows simulations of muon decay to be run as well as individual detector testing
Using LED’s The LED Pulser Boards Fiber Optic Connection Assembly
LED Boards and Fibers Installed
LED System: Concept to Reality Driver Boxes Driver Boards ECL to TTL Boards Driver Boards
Installation of the System Summer 2004
Some Initial Data
Some Analysis to Come... Consistent output from each LED Any anomalous features in the data
Current Status The Calibration System was installed on the detector July 2004 The System is currently functioning on for 50% of the detectors in the ball
The Future… Currently plans are being developed to bring the remaining 50% of detector LEDs online during the summer of 2005
Acknowledgments Dr. Kevin Giovanetti, Eric Bartel, Matt Miller, and Rebekah Esmaili T.I. Banks et al. “MuLan Progress Report 2004” The μLan Collaboration: Boston U., U. of Illinois Urbana-Champaign, U. of Kentucky, U of CA, Berkeley National Science Foundation KAMLAND PSI Experiment R