High gradient performance and quench behavior of a verification cryomodule for a high energy continuous wave linear accelerator

Posen, S.; Cravatta, A.; Checchin, Mattia; Aderhold, Sebastian; Adolphsen, C.; Arkan, T.; Bafia, Daniel; Benwell, A.; Bice, D.; Chase, Brian; Crispin, Contreras-Martinez,; Doolittle, L.; Fuerst, J. D.; Gonnella, D.; Grimm, Chuck; Hansen, Benjamin; Harms, E.; Hartsell, Brian; Hays, G.; Holzbauer, Jeremiah; Hoobler, Sonya; Kaluzny, Joshua; Khabiboulline, T.; Kucera, M.; Lambert, D.; Legg, R.; Lewis, Fred; Makara, J.; Maniar, Harsh; Maniscalco, James; Martinello, Martina; Nelson, J.; Paiagua, Sergio; Pischalnikov, Y.; Prieto, P.; Reid, J.; Ross, M.; Serrano, Carlos; Solyak, N.; A., Syed,; Sun, Ding; Tatkowski, G.; Wang, R.; White, M.; L., Zacarias,

doi:10.1103/physrevaccelbeams.25.042001

Cited by 8 publications

(1 citation statement)

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“…Reducing the phase instability in the additional cavities even further would directly obviate the need of looking for a trade off between compression and jitter, as the on-crest emission combined with the linearization would directly provide the best achievable time-resolution. The latest LLRF control techniques have already proven cavity phase stability values as low as 41 for a normal conducting 1.3 GHz CW buncher cavity and for the 1.3 GHz superconducting linac 42 . The application of these values to the additional cavities in the beamline, while keeping the gun phase stability at , would increase the time resolution from the linearization solution in Fig.…”

Section: Discussionmentioning

confidence: 99%

Novel approach to push the limit of temporal resolution in ultrafast electron diffraction accelerators

Esuain

Hwang

Neumann

et al. 2022

Sci Rep

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Ultrafast electron diffraction techniques that employ relativistic electrons as a probe have been in the spotlight as a key technology for visualizing structural dynamics which take place on a time scale of a few femtoseconds to hundreds femtoseconds. These applications highly demand not only extreme beam quality in 6-D phase space such as a few nanometer transverse emittances and femtosecond duration but also equivalent beam stability. Although these utmost requirements have been demonstrated by a compact setup with a high-gradient electron gun with state-of-the-art laser technologies, this approach is fundamentally restricted by its nature for compressing the electrons in a short distance by a ballistic bunching method. Here, we propose a new methodology that pushes the limit of timing jitter beyond the state-of-the-art by utilizing consecutive RF cavities. This layout already exists in reality for energy recovery linear accelerator demonstrators. Furthermore, the demonstrators are able to provide MHz repetition rates, which are out of reach for most conventional high-gradient electron guns.

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