Positron Sources for Future High Energy Physics Colliders

Musumeci, P.; Boffo, C.; Bulanov, S. S.; Chaikovska, I.; Golfe, A. Faus; Gessner, S.; Grames, J.; Hessami, R.; Ivanyushenkov, Y.; Lankford, A.; Loisch, G.; Moortgat-Pick, G.; Nagaitsev, S.; Riemann, S.; Sievers, P.; Tenholt, C.; Yokoya, K.

doi:10.48550/arxiv.2204.13245

Cited by 10 publications

(11 citation statements)

References 73 publications

(89 reference statements)

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“…Note that the resonant energy spectrum (10) is essentially discrete, since each value of the number of absorbed laser photons corresponds to its resonant energy: r → E η±(r) (10). Note that the first relation in expression (12), depending on the value of the quantum parameter , can be represented as a condition for the number of the wave absorbed photons required for the resonant process:…”

Section: Resonant Energies Of Positrons (Electrons) In Strong Fieldsmentioning

confidence: 99%

“…Currently, laser systems of high intensities are being intensively created [1][2][3][4][5][6][7][8], as well as sources of highenergy particles [9][10][11][12]. This contributes to the intensive development of quantum electrodynamics (QED) in strong electromagnetic fields .…”

Section: Introductionmentioning

confidence: 99%

“…The article [36] shows that the resonant energy of the produced positron (for channel A) and electron (for channel B) is determined by their outgoing angles (see Exps. (10,12)), as well as the quantum parameter…”

Section: Introductionmentioning

confidence: 99%

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The generation of narrow ultrarelativistic beams of positrons (electrons) in the process of resonant photogeneration of pairs on nuclei in a strong electromagnetic field

Roshchupkin,

Starodub

2022

Preprint

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The generation of narrow beams of high-energy positrons (electrons) in the process of resonant photogeneration of ultrarelativistic electron-positron pairs by high-energy gamma quanta in the field of the nucleus and a strong electromagnetic wave is theoretically predicted. It is shown that if the energy of the initial gamma quanta significantly exceeds the characteristic energy of the process, then ultrarelativistic positrons (for channel A) or electrons (for channel B) are emitted with energies very close to the energy of gamma quanta. Moreover, the resonant differential cross-section of such processes can exceed the corresponding differential cross-section without an external field by thirteen orders of magnitude. This effect makes it possible to obtain narrow beams of ultrarelativistic positrons (electrons) in strong electromagnetic fields with high probability.

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Section: Resonant Energies Of Positrons (Electrons) In Strong Fieldsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The generation of narrow ultrarelativistic beams of positrons (electrons) in the process of resonant photogeneration of pairs on nuclei in a strong electromagnetic field

Roshchupkin,

Starodub

2022

Preprint

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“…High-intensity positron sources are indispensable in high-energy e + e − colliders to achieve the high luminosity required for high-energy physics experiments. A number of excellent reviews of high-intensity e + sources 1,2 in high-energy lepton colliders are available, where any interested reader may find detailed reviews and technical challenges of not only advanced and novel e + sources in future projects but also current conventional e + sources (see references therein for an extended list).…”

Section: Direct Observation Of Positron Capture Process At the Positr...mentioning

confidence: 99%

Direct observation of positron capture process at the positron source of the superKEKB B-factory

Suwada

2022

Sci Rep

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A direct simultaneous detection of electron ($$e^-$$ e - ) and positron ($$e^+$$ e + ) bunches was successfully performed using wideband beam monitors and a detection system at the $$e^+$$ e + capture section of the SuperKEKB B-factory. The time intervals between the secondary-generated $$e^-$$ e - and $$e^+$$ e + bunches were measured to investigate their dynamical capture process. The results show that the time intervals were measured in the range of 20–280 ps on average, and the line-order switch of the $$e^-$$ e - and $$e^+$$ e + bunches and their dynamical phase-slip process in the axial direction were clearly observed as a function of the capture phase of accelerating structures. In this report, the dynamical capture and phase-slip process for the $$e^-$$ e - and $$e^+$$ e + bunches under the two-bunch acceleration scheme is described in detail. This study opens up a new window for direct observation of the $$e^-$$ e - and $$e^+$$ e + capture process at any present and future $$e^+$$ e + sources.

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“…Generating 10 14 e + per second requires extremely high-power electron beams on target, which results in degradation of the targets over time [2]. Research into advanced positron sources has been recognized as an area-ofneed for future accelerator research and development [3,4].…”

Section: Introductionmentioning

confidence: 99%

A Liquid Xenon Positron Target Concept

Max¹,

Holtzapple²,

Fujii³

et al. 2023

Preprint

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Positron targets are a critical component of future Linear Colliders. Traditional targets are composed of high-Z metals that become brittle over time due to constant bombardment by high-power electron beams. We explore the possibility of a liquid xenon target which is continuosly refreshed and therefore not susceptible to the damage mechanisms of traditional solid targets. Using the GEANT4 simulation code, we examine the performance of the liquid xenon target and show that the positron yield is comparable to solid targets when normalized by radiation length. Additionally, we observe that the peak energy deposition density (PEDD) threshold for liquid xenon is higher than for commonly employed metal targets, which makes it an attractive, non-toxic positron target alternative. We develop parameter sets for demonstration applications at FACET-II and future Linear Colliders.

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Positron Sources for Future High Energy Physics Colliders

Cited by 10 publications

References 73 publications

The generation of narrow ultrarelativistic beams of positrons (electrons) in the process of resonant photogeneration of pairs on nuclei in a strong electromagnetic field

The generation of narrow ultrarelativistic beams of positrons (electrons) in the process of resonant photogeneration of pairs on nuclei in a strong electromagnetic field

Direct observation of positron capture process at the positron source of the superKEKB B-factory

A Liquid Xenon Positron Target Concept

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