A helical-shape scintillating fiber trigger and tracker system for the DarkLight experiment and beyond
Name
1812.01369.pdf
Description
Submitted version
Size
733.78 KB
Format
Adobe PDF
Checksum (MD5)
7bde316d8709ea39f49bb524f2e5e473
Author(s)
Wang, Yimin
Corliss, Ross
Milner, Richard G
Tschalär, Christoph
Bernauer, Jan C
Date Issued
2019
Journal
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Publisher
Elsevier BV
Version
Original manuscript
Abstract
© 2019 Elsevier B.V. The search for new physics beyond the Standard Model has interesting possibilities at low energies. For example, the recent 6.8σ anomaly reported in the invariant mass of e+e− pairs from 8Be nuclear transitions and the discrepancy between predicted and measured values of muon g-2 give strong motivations for a protophobic fifth-force model. At low energies, the electromagnetic interaction is well understood and produces straightforward final states, making it an excellent probe of such models. However, to achieve the required precision, an experiment must address the substantially higher rate of electromagnetic backgrounds. In this paper, we present the results of simulation studies of a trigger system, motivated by the DarkLight experiment, using helical-shape scintillating fibers in a solenoidal magnetic field to veto electron–proton elastic scattering and the associated radiative processes. We also assess the performance of a tracking detector for lepton final states using scintillating fibers in the same setup.
MIT Department
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution-NonCommercial-NoDerivs License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1016/J.NIMA.2019.05.007
