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Dark Sector Physics with a Primary Electron Beam Facility at CERN

Åkesson, Torsten LU orcid (2018) In CERN SPSC Expressions of Interest
Abstract
In this Expression of Interest, we propose a primary electron beam facility with the main motivations being (i) dark sector experiments, and (ii) to enable a suite of development projects in acceleration technology. We also present a detailed description of an experiment, the Light Dark Matter eXperiment, LDMX, which could make use of this facility to probe thermal dark matter over a majority of the viable sub-GeV mass range. We show that LDMX can achieve orders of magnitude more sensitivity than any previous or currently envisioned experiment. LDMX uses missing momentum to search for dark matter produced via {\it dark bremsstrahlung} produced in the interaction of electrons on a thin target. This requires a low-current, high repetition... (More)
In this Expression of Interest, we propose a primary electron beam facility with the main motivations being (i) dark sector experiments, and (ii) to enable a suite of development projects in acceleration technology. We also present a detailed description of an experiment, the Light Dark Matter eXperiment, LDMX, which could make use of this facility to probe thermal dark matter over a majority of the viable sub-GeV mass range. We show that LDMX can achieve orders of magnitude more sensitivity than any previous or currently envisioned experiment. LDMX uses missing momentum to search for dark matter produced via {\it dark bremsstrahlung} produced in the interaction of electrons on a thin target. This requires a low-current, high repetition rate electron beam, with optimal energy of ∼16 \GeV. We propose to create this electron beam at CERN by restoring the SPS's electron acceleration capability. (Less)
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Book/Report
publication status
published
subject
in
CERN SPSC Expressions of Interest
publisher
CERN
report number
CERN-SPSC-2018-023 ; SPSC-EOI-018
language
English
LU publication?
yes
id
063fc8b9-c3ae-4c40-8d46-ab423eb77989
alternative location
https://cds.cern.ch/record/2640784
date added to LUP
2022-03-18 14:04:11
date last changed
2022-03-22 16:21:47
@techreport{063fc8b9-c3ae-4c40-8d46-ab423eb77989,
  abstract     = {{In this Expression of Interest, we propose a primary electron beam facility with the main motivations being (i) dark sector experiments, and (ii) to enable a suite of development projects in acceleration technology. We also present a detailed description of an experiment, the Light Dark Matter eXperiment, LDMX, which could make use of this facility to probe thermal dark matter over a majority of the viable sub-GeV mass range. We show that LDMX can achieve orders of magnitude more sensitivity than any previous or currently envisioned experiment. LDMX uses missing momentum to search for dark matter produced via {\it dark bremsstrahlung} produced in the interaction of electrons on a thin target. This requires a low-current, high repetition rate electron beam, with optimal energy of ∼16 \GeV. We propose to create this electron beam at CERN by restoring the SPS's electron acceleration capability.}},
  author       = {{Åkesson, Torsten}},
  institution  = {{CERN}},
  language     = {{eng}},
  number       = {{CERN-SPSC-2018-023 ; SPSC-EOI-018}},
  series       = {{CERN SPSC Expressions of Interest}},
  title        = {{Dark Sector Physics with a Primary Electron Beam Facility at CERN}},
  url          = {{https://cds.cern.ch/record/2640784}},
  year         = {{2018}},
}