Analysis of Potential Target Materials for Production of High Intensity Secondary Beams Público

Abstract

High intensity secondary beams are becoming increasingly important for the field of high energy physics (HEP), necessitating advancements in production targetry. Here, we consider some of the crucial factors for choosing a target material, including secondary production, radiation damage, and energy deposition, in the context of designing a production target for the Mu2e experiment. We use Geant4 and G4Beamline simulations to study secondary production across various materials and FLUKA simulations to study radiation damage and energy deposition across various materials. We find that number of nuclear interaction lengths may be a proxy for secondary production and that number of radiation lengths may be a proxy for damage to the target material. Thus, we propose that considering radiation length and nuclear interaction length is a valuable starting point for choosing production target materials, both for Mu2e and future accelerator contexts. 

Table of Contents

1 Introduction 1

1.1 The Standard Model . . . 1

1.2 Charged Lepton Flavor Violation and Mu2e . . . 3

1.3 Production Targetry . . . 8

2 Methods 16

2.1 Software . . . 16

2.2 Muon Production . . . 17

2.3 Material Damage . . . 19

3 Muon Production 21

3.1 Results . . . 21

3.2 Discussion . . . 27

4 Material Damage 31

4.1 Results . . . 31

4.2 Discussion . . . 35

5 A General Framework 39

6 Conclusions 42

Appendix A 44

Appendix B 47

Appendix C 50

References 58 

About this Honors Thesis

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School	Emory College
Department	Physics
Degree	B.S.
Submission	Honors Thesis
Language	English
Research Field	Physics, Elementary Particles and High Energy
Palabra Clave	Mu2e accelerator production target
Committee Chair / Thesis Advisor	Erin Bonning, Emory University
Committee Members	Simbarashe Nkomo, Emory University Justin Burton, Emory University

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