Hug, F. ; Arnold, M. ; Bahlo, T. ; Pforr, J. ; Pietralla, N. (2018)
Beam-based alignment of SRF cavities in an electron injector linac.
In: Journal of Physics: Conference Series, 1067 (3)
doi: 10.1088/1742-6596/1067/3/032021
Artikel, Bibliographie
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Kurzbeschreibung (Abstract)
Proper alignment of accelerating cavities is an important issue concerning beam quality of linear rf-accelerators. In particular, SRF cavities of injector linacs using high accelerating gradients on low-velocity electron beams can deteriorate the beam quality significantly when not aligned sufficiently. On the other hand, knowing the exact position of every cavity after several cool-down cycles of a cryomodule can be difficult depending on the particular module design. We will report on operational experience on the SC injector of the Darmstadt superconducting recirculating linac and ERL (S-DALINAC) showing unwanted effects on beam dynamics and beam quality due to cavity misalignment, such as transverse beam deflections by changing accelerating phases and a growth of transverse emittance. These effects could already be observed at small beam currents of a few nA, so space-charge effects were eliminated to be the reason for these observations. In this work we will report on the possibility to realign SRF cavities after cool-down by measuring the transverse deflection of the beam and compare results with beam dynamics simulations.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2018 |
| Autor(en): | Hug, F. ; Arnold, M. ; Bahlo, T. ; Pforr, J. ; Pietralla, N. |
| Art des Eintrags: | Bibliographie |
| Titel: | Beam-based alignment of SRF cavities in an electron injector linac |
| Sprache: | Englisch |
| Publikationsjahr: | 2018 |
| Ort: | Bristol |
| Verlag: | IOP Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Physics: Conference Series |
| Jahrgang/Volume einer Zeitschrift: | 1067 |
| (Heft-)Nummer: | 3 |
| Kollation: | 5 Seiten |
| DOI: | 10.1088/1742-6596/1067/3/032021 |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | Proper alignment of accelerating cavities is an important issue concerning beam quality of linear rf-accelerators. In particular, SRF cavities of injector linacs using high accelerating gradients on low-velocity electron beams can deteriorate the beam quality significantly when not aligned sufficiently. On the other hand, knowing the exact position of every cavity after several cool-down cycles of a cryomodule can be difficult depending on the particular module design. We will report on operational experience on the SC injector of the Darmstadt superconducting recirculating linac and ERL (S-DALINAC) showing unwanted effects on beam dynamics and beam quality due to cavity misalignment, such as transverse beam deflections by changing accelerating phases and a growth of transverse emittance. These effects could already be observed at small beam currents of a few nA, so space-charge effects were eliminated to be the reason for these observations. In this work we will report on the possibility to realign SRF cavities after cool-down by measuring the transverse deflection of the beam and compare results with beam dynamics simulations. |
| ID-Nummer: | Artikel-ID: 032021 |
| Zusätzliche Informationen: | 9th International Particle Accelerator Conference, IPAC18 |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 530 Physik |
| Fachbereich(e)/-gebiet(e): | 05 Fachbereich Physik 05 Fachbereich Physik > Institut für Kernphysik |
| Hinterlegungsdatum: | 11 Jun 2024 12:54 |
| Letzte Änderung: | 11 Jun 2024 12:54 |
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Verfügbare Versionen dieses Eintrags
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Beam-based alignment of SRF cavities in an electron injector linac. (deposited 03 Jun 2024 09:16)
- Beam-based alignment of SRF cavities in an electron injector linac. (deposited 11 Jun 2024 12:54) [Gegenwärtig angezeigt]
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