Concept of Very-Asymmetric lepton Collider for dark matter search

V. S. Morozov; B. Wojtsekhowski

doi:10.1016/j.nima.2023.168035

Concept of Very-Asymmetric lepton Collider for dark matter search

V. S. Morozov, B. Wojtsekhowski

Accelerator Physics

Research output: Contribution to journal › Article › peer-review

Abstract

Accelerator-based searches for dark matter are aiming for high sensitivity and need an experimental setup with high luminosity. This field of research is often called intensity frontier physics. One of the best motivated portals of interaction between dark matter and ordinary matter is a dark photon which could be observed as a resonance in the invariant mass of the decay products. Electron–positron collisions are known to be the cleanest interaction for such a study. In this paper we propose a scheme for a collider which allows for a luminosity of a few orders of magnitude higher than could be obtained in a conventional symmetric collider and with a few times higher accessible mass than is possible using a positron beam and a fixed target approach. The key concept is based on asymmetric energies: a high-energy circulating positron beam and a low-energy high-intensity electron beam, and optimization of the beam interaction region. We present here a configuration of a collision region of 10 MeV electron and 4 GeV positron beams.

Original language	English
Article number	168035
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	1049
DOIs	https://doi.org/10.1016/j.nima.2023.168035
State	Published - Apr 2023

Funding

We appreciate and are thankful to Y. Derbenev of Jefferson Lab for fruitful discussions. We also thank J. Qiang of Berkeley Lab for his help with setup of BeamBeam3D simulations. This manuscript has been authored in part by UT-Battelle, LLC, under Contract No. DE-AC05-00OR22725 and Jefferson Science Associates, LLC under Contract No. DE-AC05-06OR23177 with the US Department of Energy (DOE). The publisher acknowledges the US government license to provide public access under the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan). We appreciate and are thankful to Y. Derbenev of Jefferson Lab for fruitful discussions. We also thank J. Qiang of Berkeley Lab for his help with setup of BeamBeam3D simulations. This manuscript has been authored in part by UT-Battelle, LLC, under Contract No. DE-AC05-00OR22725 and Jefferson Science Associates, LLC under Contract No. DE-AC05-06OR23177 with the US Department of Energy (DOE). The publisher acknowledges the US government license to provide public access under the DOE Public Access Plan ( http://energy.gov/downloads/doe-public-access-plan ).

Funders	Funder number
DOE Public Access Plan
Jefferson Science Associates, LLC	DE-AC05-06OR23177
U.S. Department of Energy

Keywords

Asymmetric beam energies
Beam–beam interaction
Dark matter search
Electron–positron collider
High luminosity

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10.1016/j.nima.2023.168035

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title = "Concept of Very-Asymmetric lepton Collider for dark matter search",

abstract = "Accelerator-based searches for dark matter are aiming for high sensitivity and need an experimental setup with high luminosity. This field of research is often called intensity frontier physics. One of the best motivated portals of interaction between dark matter and ordinary matter is a dark photon which could be observed as a resonance in the invariant mass of the decay products. Electron–positron collisions are known to be the cleanest interaction for such a study. In this paper we propose a scheme for a collider which allows for a luminosity of a few orders of magnitude higher than could be obtained in a conventional symmetric collider and with a few times higher accessible mass than is possible using a positron beam and a fixed target approach. The key concept is based on asymmetric energies: a high-energy circulating positron beam and a low-energy high-intensity electron beam, and optimization of the beam interaction region. We present here a configuration of a collision region of 10 MeV electron and 4 GeV positron beams.",

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AU - Wojtsekhowski, B.

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Concept of Very-Asymmetric lepton Collider for dark matter search

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