Beam Position and Phase Monitors Characterized and Installed in the LANSCE CCL

Title: Beam Position and Phase Monitors Characterized and Installed in the LANSCE CCL

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Abstract

The Los Alamos Neutron Science Center - Risk Mitigation Project is in the process of replacing older Coupled-Cavity-Linac (CCL) Beam-Position Monitors (BPMs) with newer Beam Position and Phase Monitors (BPPMs) and their associated electronics and cable plants. In many locations, these older BPMs include a separate Delta-T loop for measuring the beam's central phase and energy. Thirty-one BPPMs have been installed and many have monitored the charged particle beam. The installation of these newer BPPMs is the first step to installing complete BPPM measurement systems. Prior to the installation, a characterization of each BPPM took place. The characterization procedure includes a mechanical inspection, a vacuum testing, and associated electrical tests. The BPPM electrical tests for all four electrodes include contact resistance measurements, Time Domain Reflectometer (TDR) measurements, relative 201.25-MHz phase measurements, and finally a set of position-sensitive mapping measurements were performed which included associated fitting routines. This paper will show these data for a typical characterized BPPM.

Authors:

Gilpatrick, John D ^[1]; Kutac, Vincent G ^[1]; Martinez, Derwin ^[1]; McCrady, Rodney C ^[1]; O'Hara, James F ^[1]; Olivas, Felix R ^[1]; Shurter, Robert B ^[1]; Watkins, Heath A ^[1]

Los Alamos National Laboratory

Publication Date:: 2012-04-11

Research Org.:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Sponsoring Org.:: DOE/LANL

OSTI Identifier:: 1038530

Report Number(s):: LA-UR-12-20505
TRN: US1201922

DOE Contract Number:: AC52-06NA25396

Resource Type:: Conference

Resource Relation:: Conference: 2012 Beam Instrumentation Workshop (BIW12) ; 2012-04-15 - 2012-04-19 ; Newport News, Virginia, United States

Country of Publication:: United States

Language:: English

Subject:: 43 PARTICLE ACCELERATORS; BEAM POSITION; CABLES; CHARGED PARTICLES; ELECTRODES; MITIGATION; MONITORS; NEUTRONS; TESTING

Citation Formats


                    Gilpatrick, John D, Kutac, Vincent G, Martinez, Derwin, McCrady, Rodney C, O'Hara, James F, Olivas, Felix R, Shurter, Robert B, and Watkins, Heath A. Beam Position and Phase Monitors Characterized and Installed in the LANSCE CCL.  United States: N. p., 2012. 
        Web.

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                    Gilpatrick, John D, Kutac, Vincent G, Martinez, Derwin, McCrady, Rodney C, O'Hara, James F, Olivas, Felix R, Shurter, Robert B, & Watkins, Heath A. Beam Position and Phase Monitors Characterized and Installed in the LANSCE CCL.  United States.

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                    Gilpatrick, John D, Kutac, Vincent G, Martinez, Derwin, McCrady, Rodney C, O'Hara, James F, Olivas, Felix R, Shurter, Robert B, and Watkins, Heath A. Wed .  
        "Beam Position and Phase Monitors Characterized and Installed in the LANSCE CCL".  United States.  https://www.osti.gov/servlets/purl/1038530.

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@article{osti_1038530,

  title        = {Beam Position and Phase Monitors Characterized and Installed in the LANSCE CCL},

  author       = {Gilpatrick, John D and Kutac, Vincent G and Martinez, Derwin and McCrady, Rodney C and O'Hara, James F and Olivas, Felix R and Shurter, Robert B and Watkins, Heath A},

  abstractNote = {The Los Alamos Neutron Science Center - Risk Mitigation Project is in the process of replacing older Coupled-Cavity-Linac (CCL) Beam-Position Monitors (BPMs) with newer Beam Position and Phase Monitors (BPPMs) and their associated electronics and cable plants. In many locations, these older BPMs include a separate Delta-T loop for measuring the beam's central phase and energy. Thirty-one BPPMs have been installed and many have monitored the charged particle beam. The installation of these newer BPPMs is the first step to installing complete BPPM measurement systems. Prior to the installation, a characterization of each BPPM took place. The characterization procedure includes a mechanical inspection, a vacuum testing, and associated electrical tests. The BPPM electrical tests for all four electrodes include contact resistance measurements, Time Domain Reflectometer (TDR) measurements, relative 201.25-MHz phase measurements, and finally a set of position-sensitive mapping measurements were performed which included associated fitting routines. This paper will show these data for a typical characterized BPPM.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/1038530},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2012},

  month        = {4}

}

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