Beams Document 4678-v1

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On Beamstrahlung Limit on the Ultimate Energy of e+e- Colliders

Document #:
Beams-doc-4678-v1
Document type:
Note
Submitted by:
Vladimir Shiltsev
Updated by:
Vladimir Shiltsev
Document Created:
01 Oct 2014, 20:46
Contents Revised:
01 Oct 2014, 20:46
Metadata Revised:
01 Oct 2014, 20:46
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Abstract:
The beam-beam interaction at IP of a e+e- collider produces radiation (beamstrahlung) that generates energy spread in the oncoming beams, background for the detectors and results in the loss of the HEP measurements precision. The effects scale up with energy and at some point become so severe that all traditional advantages of e+e- colliders (collisions of point-like particles) disappear and instead, the effective collisions occur over a wide COM energy spectrum and with all kind of particles (e+, e-, photons, pairs, etc) becoming almost as “poorly defined” as collisions of compound particles, like protons or ions.
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