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Title: Dual-ridge waveguide load design for eRHIC

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1376129
Report Number(s):
BNL-114063-2017-CP
R&D Project: KBCH139; 18034; KB0202011
DOE Contract Number:
SC00112704
Resource Type:
Conference
Resource Relation:
Conference: 18th International Conference on RF Superconductivity (SRF2017); Lanzhou, Gansu Province, China; 20170717 through 20170721
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS

Citation Formats

Kolb P., Gao, Y., Pai, C., Porqueddu, R., Smith, K., and Xu, W.. Dual-ridge waveguide load design for eRHIC. United States: N. p., 2017. Web.
Kolb P., Gao, Y., Pai, C., Porqueddu, R., Smith, K., & Xu, W.. Dual-ridge waveguide load design for eRHIC. United States.
Kolb P., Gao, Y., Pai, C., Porqueddu, R., Smith, K., and Xu, W.. Mon . "Dual-ridge waveguide load design for eRHIC". United States. doi:. https://www.osti.gov/servlets/purl/1376129.
@article{osti_1376129,
title = {Dual-ridge waveguide load design for eRHIC},
author = {Kolb P. and Gao, Y. and Pai, C. and Porqueddu, R. and Smith, K. and Xu, W.},
abstractNote = {},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jul 17 00:00:00 EDT 2017},
month = {Mon Jul 17 00:00:00 EDT 2017}
}

Conference:
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  • A Radio Frequency Quadrupole (RFQ) accelerator with an RF power input of 2 MW and an H{sup +} beam output current of 100 mAmps at 6.7 MeV, continuous duty factor utilizes twelve nearly identical ridge-loaded waveguides. The ridge-loaded, vacuum waveguides couple the RF power to the RFQ accelerating cavity. The mechanical design and fabrication of the ridge-loaded waveguides are the topics of this paper.
  • The luminosity of the eRHIC ring-ring design is limited by the beam-beam effect exerted on the electron beam. Recent simulation studies have shown that the beam-beam limit can be increased by means of an electron lens that compensates the beam-beam effect experienced by the electron beam. This scheme requires proper design of the electron ring, providing the correct betatron phase advance between interaction point and electron lens. We review the performance of the eRHIC ring-ring version and discuss various parameter sets, based on different cooling schemes for the proton/ion beam.
  • The conceptual design of the high luminosity electron-ion collider, eRHIC, is presented. The goal of eRHIC is to provide collisions of electrons (and possibly positrons) with ions and protons at the center-of-mass energy range from 25 to 140 GeV, and with luminosities exceeding 10{sup 33} cm{sup -2} s{sup -1}. A considerable part of the physics program is based on polarized electrons, protons and He3 ions with high degree of polarization. In eRHIC electron beam will be accelerated in an energy recovery linac. Major R&D items for eRHIC include the development of a high intensity polarized electron source, studies of variousmore » aspects of energy recovery technology for high power beams and the development of compact magnets for recirculating passes. In eRHIC scheme the beam-beam interaction has several specific features, which have to be thoroughly studied. In order to maximize the collider luminosity, several upgrades of the existing RHIC accelerator are required. Those upgrades may include the increase of intensity as well as transverse and longitudinal cooling of ion and proton beams.« less
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