Beam dynamics and electromagnetic studies of a 3 MeV, 325 MHz radio frequency quadrupole accelerator

We present the beam dynamics and electromagnetic studies of a 3 MeV, 325 MHz H− radio frequency quadrupole (RFQ) accelerator for the proposed Indian Spallation Neutron Source project. We have followed a design approach, where the emittance growth and the losses are minimized by keeping the tune depr...

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Main Authors: Gaur Rahul, Kumar Vinit
Format: Article
Language:English
Published: EDP Sciences 2018-01-01
Series:EPJ Nuclear Sciences & Technologies
Online Access:https://doi.org/10.1051/epjn/2018004
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spelling doaj-485be9d9012a4bcbab186da09ece019f2021-02-02T02:23:08ZengEDP SciencesEPJ Nuclear Sciences & Technologies2491-92922018-01-014910.1051/epjn/2018004epjn170030Beam dynamics and electromagnetic studies of a 3 MeV, 325 MHz radio frequency quadrupole acceleratorGaur RahulKumar VinitWe present the beam dynamics and electromagnetic studies of a 3 MeV, 325 MHz H− radio frequency quadrupole (RFQ) accelerator for the proposed Indian Spallation Neutron Source project. We have followed a design approach, where the emittance growth and the losses are minimized by keeping the tune depression ratio larger than 0.5. The transverse cross-section of RFQ is designed at a frequency lower than the operating frequency, so that the tuners have their nominal position inside the RFQ cavity. This has resulted in an improvement of the tuning range, and the efficiency of tuners to correct the field errors in the RFQ. The vane-tip modulations have been modelled in CST-MWS code, and its effect on the field flatness and the resonant frequency has been studied. The deterioration in the field flatness due to vane-tip modulations is reduced to an acceptable level with the help of tuners. Details of the error study and the higher order mode study along with mode stabilization technique are also described in the paper.https://doi.org/10.1051/epjn/2018004
collection DOAJ
language English
format Article
sources DOAJ
author Gaur Rahul
Kumar Vinit
spellingShingle Gaur Rahul
Kumar Vinit
Beam dynamics and electromagnetic studies of a 3 MeV, 325 MHz radio frequency quadrupole accelerator
EPJ Nuclear Sciences & Technologies
author_facet Gaur Rahul
Kumar Vinit
author_sort Gaur Rahul
title Beam dynamics and electromagnetic studies of a 3 MeV, 325 MHz radio frequency quadrupole accelerator
title_short Beam dynamics and electromagnetic studies of a 3 MeV, 325 MHz radio frequency quadrupole accelerator
title_full Beam dynamics and electromagnetic studies of a 3 MeV, 325 MHz radio frequency quadrupole accelerator
title_fullStr Beam dynamics and electromagnetic studies of a 3 MeV, 325 MHz radio frequency quadrupole accelerator
title_full_unstemmed Beam dynamics and electromagnetic studies of a 3 MeV, 325 MHz radio frequency quadrupole accelerator
title_sort beam dynamics and electromagnetic studies of a 3 mev, 325 mhz radio frequency quadrupole accelerator
publisher EDP Sciences
series EPJ Nuclear Sciences & Technologies
issn 2491-9292
publishDate 2018-01-01
description We present the beam dynamics and electromagnetic studies of a 3 MeV, 325 MHz H− radio frequency quadrupole (RFQ) accelerator for the proposed Indian Spallation Neutron Source project. We have followed a design approach, where the emittance growth and the losses are minimized by keeping the tune depression ratio larger than 0.5. The transverse cross-section of RFQ is designed at a frequency lower than the operating frequency, so that the tuners have their nominal position inside the RFQ cavity. This has resulted in an improvement of the tuning range, and the efficiency of tuners to correct the field errors in the RFQ. The vane-tip modulations have been modelled in CST-MWS code, and its effect on the field flatness and the resonant frequency has been studied. The deterioration in the field flatness due to vane-tip modulations is reduced to an acceptable level with the help of tuners. Details of the error study and the higher order mode study along with mode stabilization technique are also described in the paper.
url https://doi.org/10.1051/epjn/2018004
work_keys_str_mv AT gaurrahul beamdynamicsandelectromagneticstudiesofa3mev325mhzradiofrequencyquadrupoleaccelerator
AT kumarvinit beamdynamicsandelectromagneticstudiesofa3mev325mhzradiofrequencyquadrupoleaccelerator
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