A Tungsten / Scintillating Fiber Electromagnetic Calorimeter Prototype for a High-Rate Muon g-2 Experiment
R. McNabb (1), J. Blackburn (1), J. D. Crnkovic (1), D. W. Hertzog, (1), B. Kiburg (1), J. Kunkle (1), E. Thorsland (1), D. M. Webber (1), K. R., Lynch (2) ((1) Department of Physics, University of Illinois at, Urbana-Champaign, (2) Department of Physics, Boston University)
TL;DR
This paper presents a new compact electromagnetic calorimeter prototype using tungsten and scintillating fibers, optimized for high-rate muon g-2 experiments, with detailed construction, testing, and simulation results.
Contribution
It introduces a novel tungsten/scintillating fiber calorimeter design with simple assembly and validated performance for high-rate muon g-2 experiments.
Findings
Measured intrinsic sampling resolution of (11.8±1.1)/√E(GeV)
Achieved a radiation length of 0.69 cm and Moliere radius of 1.73 cm
Validated design with test beam and GEANT-4 simulations
Abstract
A compact and fast electromagnetic calorimeter prototype was designed, built, and tested in preparation for a next-generation, high-rate muon g-2 experiment. It uses a simple assembly procedure: alternating layers of 0.5-mm-thick tungsten plates and 0.5-mm-diameter plastic scintillating fiber ribbons. This geometry leads to a detector having a calculated radiation length of 0.69 cm, a Moliere radius of 1.73 cm, and a measured intrinsic sampling resolution term of (11.8\pm1.1)/\sqrt{E(GeV)}, in the range 1.5 to 3.5 GeV. The construction procedure, test beam results, and GEANT-4 comparative simulations are described.
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