Requirements to beam emittances at photon colliders. Laser cooling of electron beams

Journal Article · Sat Feb 01 04:00:00 EST 1997 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.52965· OSTI ID:552900

Telnov, V ^[1]

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1. Institute of Nuclear Physics, 630090, Novosibirsk (Russia)

Linear colliders offer unique opportunity to study {gamma}{gamma},{gamma}e interactions. Using the laser backscattering method one can obtain {gamma}{gamma} and {gamma}e colliding beams with the energy and luminosity comparable to that in e{sup +}e{sup {minus}} collisions or even higher (due to absence of some beam collision effects). In order to reach ultimate parameters of photon colliders the {open_quotes}geometric{close_quotes} luminosity of initial electron beams should be higher than that in e{sup +}e{sup {minus}} collisions. In this report requirements to beam emittances at photon colliders are analyzed and a novel method of obtaining electron beams with small transverse emittances is considered: the electron beam is cooled during a head-on collision with the focused powerful laser pulse. With reasonable laser parameters (laser flash energy about 10 J) one can decrease the transverse normalized emittances by a factor of 10 per one stage. A limit on the final (after few stages) transverse emittance of the electron beam is much lower than that given by other known methods. {copyright} {ital 1997 American Institute of Physics.}

• OSTI ID: 552900
• Report Number(s): CONF-961178--
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 396; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BEAM EMITTANCE
BEAM LUMINOSITY
DESIGN
ELECTRON BEAMS
LINEAR COLLIDERS
PHOTON BEAMS
PHOTON-ELECTRON INTERACTIONS
PHOTON-PHOTON INTERACTIONS
TEV RANGE 100-1000