TY - JOUR
T1 - Superconducting linac beam dynamics with high-order maps for RF resonators
AU - Geraci, Andrew A.
AU - Nolen, Jerry A.
AU - Pardo, Richard C.
N1 - Funding Information:
This work was supported by the US Department of Energy under Contract No. W-31-109-ENG-38.
Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2004/2/21
Y1 - 2004/2/21
N2 - The arbitrary-order map beam optics code COSY Infinity has recently been adapted to calculate accurate high-order ion-optical maps for electrostatic and radio-frequency accelerating structures. The beam dynamics of the superconducting low-velocity positive-ion injector linac for the ATLAS accelerator at Argonne National Lab is used to demonstrate some advantages of the new simulation capability. The injector linac involves four different types of superconducting accelerating structures and has a total of 18 resonators. The detailed geometry for each of the accelerating cavities is included, allowing an accurate representation of the on- and off-axis electric fields. The fields are obtained within the code from a Poisson-solver for cylindrically symmetric electrodes of arbitrary geometry. The transverse focusing is done with superconducting solenoids. A detailed comparison of the transverse and longitudinal phase space is made with the conventional ray-tracing code LINRAY. The two codes are evaluated for ease of optimization, with particular attention to higher-order effects, and future applications are discussed.
AB - The arbitrary-order map beam optics code COSY Infinity has recently been adapted to calculate accurate high-order ion-optical maps for electrostatic and radio-frequency accelerating structures. The beam dynamics of the superconducting low-velocity positive-ion injector linac for the ATLAS accelerator at Argonne National Lab is used to demonstrate some advantages of the new simulation capability. The injector linac involves four different types of superconducting accelerating structures and has a total of 18 resonators. The detailed geometry for each of the accelerating cavities is included, allowing an accurate representation of the on- and off-axis electric fields. The fields are obtained within the code from a Poisson-solver for cylindrically symmetric electrodes of arbitrary geometry. The transverse focusing is done with superconducting solenoids. A detailed comparison of the transverse and longitudinal phase space is made with the conventional ray-tracing code LINRAY. The two codes are evaluated for ease of optimization, with particular attention to higher-order effects, and future applications are discussed.
KW - Beam optics
KW - High-order maps
KW - Superconducting linacs
UR - http://www.scopus.com/inward/record.url?scp=1042304342&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=1042304342&partnerID=8YFLogxK
U2 - 10.1016/j.nima.2003.11.177
DO - 10.1016/j.nima.2003.11.177
M3 - Conference article
AN - SCOPUS:1042304342
SN - 0168-9002
VL - 519
SP - 388
EP - 395
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
IS - 1-2
T2 - Proceedings of the Sixth International Conference on Charged (CPO)
Y2 - 21 October 2002 through 25 October 2002
ER -