dorsal/arxiv
View SchemaWake Field Effect Analysis in APT Linac
| Authors | Sergey S. Kurennoy |
|---|---|
| Categories | |
| ArXiv ID | physics/9807028 |
| URL | https://arxiv.org/abs/physics/9807028 |
Abstract
The 1.7-GeV 100-mA CW proton linac is now under design for the Accelerator Production of Tritium (APT) Project. The APT linac comprises both the normal conducting (below 211 MeV) and superconducting (SC) sections. The high current leads to stringent restrictions on allowable beam losses (<1 nA/m), that requires analyzing carefully all possible loss sources. While wake-field effects are usually considered negligible in proton linacs, we study these effects for the APT to exclude potential problems at such a high current. Loss factors and resonance frequency spectra of various discontinuities of the vacuum chamber are investigated, both analytically and using 2-D and 3-D simulation codes with a single bunch as well as with many bunches. Our main conclusion is that the only noticeable effect is the HOM heating of the 5-cell SC cavities. It, however, has an acceptable level and, in addition, will be taken care of by HOM couplers.
{
"annotation_id": "d7e502ce-cf23-4ebf-941e-4aaaebaed0de",
"date_created": "2026-03-02T18:01:21.522000Z",
"date_modified": "2026-03-02T18:01:21.522000Z",
"file_hash": "93b516eb6c813862b115a2072d10856f9433c22b6e68018c98a159285f06a757",
"private": false,
"record": {
"abstract": "The 1.7-GeV 100-mA CW proton linac is now under design for the Accelerator\nProduction of Tritium (APT) Project. The APT linac comprises both the normal\nconducting (below 211 MeV) and superconducting (SC) sections. The high current\nleads to stringent restrictions on allowable beam losses (\u003c1 nA/m), that\nrequires analyzing carefully all possible loss sources. While wake-field\neffects are usually considered negligible in proton linacs, we study these\neffects for the APT to exclude potential problems at such a high current. Loss\nfactors and resonance frequency spectra of various discontinuities of the\nvacuum chamber are investigated, both analytically and using 2-D and 3-D\nsimulation codes with a single bunch as well as with many bunches. Our main\nconclusion is that the only noticeable effect is the HOM heating of the 5-cell\nSC cavities. It, however, has an acceptable level and, in addition, will be\ntaken care of by HOM couplers.",
"arxiv_id": "physics/9807028",
"authors": [
"Sergey S. Kurennoy"
],
"categories": [
"physics.acc-ph"
],
"title": "Wake Field Effect Analysis in APT Linac",
"url": "https://arxiv.org/abs/physics/9807028"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "f63fdeb8-020e-4dec-8d31-16c0b77c97e7",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}