dorsal/arxiv
View SchemaDesign of an interaction region with head-on collisions for the ILC
| Authors | R. Appleby, D. Angal-Kalinin, F. Jackson, M . Alabau-Pons, P. Bambade, J. Brossard, O. Dadoun, C. Rimbault, L. Keller, Y. Nosochkov, A. Seryi, J. Payet, O. Napoly, C. Rippon, D. Uriot |
|---|---|
| Categories | |
| ArXiv ID | physics/0609248 |
| URL | https://arxiv.org/abs/physics/0609248 |
| Journal | Conf.Proc.C060626:682-684,2006 |
Abstract
An interaction region (IR) with head-on collisions is considered as an alternative to the baseline configuration of the International Linear Collider (ILC) which includes two IRs with finite crossing-angles (2 and 20 mrad). Although more challenging for the beam extraction, the head-on scheme is favoured by the experiments because it allows a more convenient detector configuration, particularly in the forward region. The optics of the head-on extraction is revisited by separating the e+ and e- beams horizontally, first by electrostatic separators operated at their LEP nominal field and then using a defocusing quadrupole of the final focus beam line. In this way the septum magnet is protected from the beamstrahlung power. Newly optimized final focus and extraction optics are presented, including a first look at post-collision diagnostics. The influence of parasitic collisions is shown to lead to a region of stable collision parameters. Disrupted beam and beamstrahlung photon losses are calculated along the extraction elements.
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"abstract": "An interaction region (IR) with head-on collisions is considered as an\nalternative to the baseline configuration of the International Linear Collider\n(ILC) which includes two IRs with finite crossing-angles (2 and 20 mrad).\nAlthough more challenging for the beam extraction, the head-on scheme is\nfavoured by the experiments because it allows a more convenient detector\nconfiguration, particularly in the forward region. The optics of the head-on\nextraction is revisited by separating the e+ and e- beams horizontally, first\nby electrostatic separators operated at their LEP nominal field and then using\na defocusing quadrupole of the final focus beam line. In this way the septum\nmagnet is protected from the beamstrahlung power. Newly optimized final focus\nand extraction optics are presented, including a first look at post-collision\ndiagnostics. The influence of parasitic collisions is shown to lead to a region\nof stable collision parameters. Disrupted beam and beamstrahlung photon losses\nare calculated along the extraction elements.",
"arxiv_id": "physics/0609248",
"authors": [
"R. Appleby",
"D. Angal-Kalinin",
"F. Jackson",
"M . Alabau-Pons",
"P. Bambade",
"J. Brossard",
"O. Dadoun",
"C. Rimbault",
"L. Keller",
"Y. Nosochkov",
"A. Seryi",
"J. Payet",
"O. Napoly",
"C. Rippon",
"D. Uriot"
],
"categories": [
"physics.acc-ph"
],
"journal_ref": "Conf.Proc.C060626:682-684,2006",
"title": "Design of an interaction region with head-on collisions for the ILC",
"url": "https://arxiv.org/abs/physics/0609248"
},
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