dorsal/arxiv
View SchemaRF Cavities For The Muon and Neutrino Factory Collaboration Study
| Authors | A. Moretti, N. Holtkamp, T. Jurgens, Z. Qian, V. Wu |
|---|---|
| Categories | |
| ArXiv ID | physics/0008152 |
| URL | https://arxiv.org/abs/physics/0008152 |
| Journal | eConfC000821:THC18,2000 |
Abstract
A multi-laboratory collaboration is studying the feasibility of building a muon collider, the first phase of which maybe a neutrino factory. The phase space occupied by the muons is very large and needs to be cooled several orders of magnitude for either machine, 100,000 to 1 million for the collider and ten to 100 for the factory. Ionization cooling is the base line method for muon cooling. This scheme uses hydrogen absorbers and rf re-acceleration in a long series of magnetic focusing channels to cool the muons. At Fermilab two rf cavity types are under study to provide the required cooling rf re-acceleration, a 805 MHz high gradient cavity for the collider and a 201 MHz high gradient cavity for the neutrino factory. The 805 MHz cavity currently under going cold testing is a non-periodic pi-mode cavity with the iris openings shaped to follow the contour of the beam. The 201 MHz cavity uses hollow thin metal tubes over the beam aperture to terminate the field in a pill-box type mode to increase its shunt impedance. This is possible because muons have little interactions with thin metal membranes. Details of these cavities and cold measurement data will be presented.
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"abstract": "A multi-laboratory collaboration is studying the feasibility of building a\nmuon collider, the first phase of which maybe a neutrino factory. The phase\nspace occupied by the muons is very large and needs to be cooled several orders\nof magnitude for either machine, 100,000 to 1 million for the collider and ten\nto 100 for the factory. Ionization cooling is the base line method for muon\ncooling. This scheme uses hydrogen absorbers and rf re-acceleration in a long\nseries of magnetic focusing channels to cool the muons. At Fermilab two rf\ncavity types are under study to provide the required cooling rf\nre-acceleration, a 805 MHz high gradient cavity for the collider and a 201 MHz\nhigh gradient cavity for the neutrino factory. The 805 MHz cavity currently\nunder going cold testing is a non-periodic pi-mode cavity with the iris\nopenings shaped to follow the contour of the beam. The 201 MHz cavity uses\nhollow thin metal tubes over the beam aperture to terminate the field in a\npill-box type mode to increase its shunt impedance. This is possible because\nmuons have little interactions with thin metal membranes. Details of these\ncavities and cold measurement data will be presented.",
"arxiv_id": "physics/0008152",
"authors": [
"A. Moretti",
"N. Holtkamp",
"T. Jurgens",
"Z. Qian",
"V. Wu"
],
"categories": [
"physics.acc-ph"
],
"journal_ref": "eConfC000821:THC18,2000",
"title": "RF Cavities For The Muon and Neutrino Factory Collaboration Study",
"url": "https://arxiv.org/abs/physics/0008152"
},
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