Bulletin of the American Physical Society
5th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan
Volume 63, Number 12
Tuesday–Saturday, October 23–27, 2018; Waikoloa, Hawaii
Session DM: Instrumentation II
9:00 AM–11:45 AM,
Thursday, October 25, 2018
Hilton
Room: Queen's 6
Chair: Alexandra Gade, Michigan State University
Abstract ID: BAPS.2018.HAW.DM.10
Abstract: DM.00010 : GEM Detectors for DarkLight Phase 1C*
11:15 AM–11:30 AM
Presenter:
Sahara Jesmin Mohammed Prem Nazeer
(Hampton Univ)
Author:
Sahara Jesmin Mohammed Prem Nazeer
(Hampton Univ)
The DarkLight experiment has been proposed to search for a heavy photon A′ in the mass range of 10-100 MeV/c2 produced in electron scattering. Inspired by the recent discovery (Krasznahorkay, A. J. et al., 2016) of an anomaly in the emission of di-leptons from excited Be8, interpreted as evidence for a fifth force carrier with a mass of 17 MeV/c2, DarkLight Phase 1C will be focused on a dedicated search for a force carrier in the invariant mass region around 17 MeV/c2.
The experiment aims to measure the process e-Z → (e-Z) e-e+ with a Tantalum target, by detecting a charged lepton pair in the final state. If the lepton pair originates from the decay of a hypothetical neutral force particle, a peak structure in the invariant mass spectrum is expected. For Phase 1C a setup of two magnetic spectrometers is favored to detect the lepton pair with an invariant mass near 17 MeV/c2. The spectrometers will be instrumented with customized GEM detectors for tracking. A novel GEM construction technique is used where all layers are stretched and assembled mechanically within a double frame.
The preparation of GEM detector construction for the DarkLight Phase 1C experiment will be discussed.
*This work is supported by NSF grants PHY-1505934, 1436680, 1812402 and JSA/JLAB graduate fellowship.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.HAW.DM.10
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