Determination of field amplitude and synchronous phase using the beam-induced signal in an unpowered superconducting cavity

Autor:	John D Galambos, Yan Zhang, S. Henderson, Paul C Chu, Isidoro E Campisi
Rok vydání:	2007
Předmět:	Physics Nuclear and High Energy Physics business.industry Phase (waves) Linear particle accelerator Acceleration Nuclear magnetic resonance Amplitude Optics Physics::Accelerator Physics business Instrumentation Spallation Neutron Source Noise (radio) Excitation Beam (structure)
Zdroj:	Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 571:574-582
ISSN:	0168-9002
Popis:	At the Spallation Neutron Source superconducting linear accelerator, RF fields excited by a pulsed, high-intensity drifting beam in an unpowered superconducting cavity are measured with the cavity control circuit, in order to determine the synchronous phase and to calibrate the pickup probe of the cavity. Measurement errors arising from noise and from the excitation of other pass-band modes in the cavity are analyzed. The phase change due to beam acceleration as well as due to cavity detuning is computed with a model which is described in this paper. Simulation results show excellent agreement with measurements performed in drifting beam experiments. The measured cavity synchronous phase and accelerating gradient determined from the drifting beam measurements are in good agreement with those obtained from a time-of-flight based technique.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::bacafd0318ac4b4aa8a780b8564b67c7 https://doi.org/10.1016/j.nima.2006.10.397 Zobrazit plný text záznamu Full Text from ScienceDirect