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Chung, Moses
Intense Beam and Accelerator Laboratory (IBAL)
Research Interests
  • Accelerator, beam physics and diagnostics, plasma


Measurement of transmission efficiency for 400 MeV proton beam through collimator at Fermilab MuCool Test Area using Chromox-6 scintillation screen

DC Field Value Language Jana, M. R. ko Chung, Moses ko Freemire, B. ko Hanlet, P. ko Leonova, M. ko Moretti, A. ko Palmer, M. ko Schwarz, T. ko Tollestrup, A. ko Torun, Y. ko Yonehara, K. ko 2015-03-30T07:46:20Z - 2014-12-24 ko 2013-06 -
dc.identifier.citation REVIEW OF SCIENTIFIC INSTRUMENTS, v.84, no.6, pp. - ko
dc.identifier.issn 0034-6748 ko
dc.identifier.uri -
dc.identifier.uri ko
dc.description.abstract The MuCool Test Area (MTA) at Fermilab is a facility to develop the technology required for ionization cooling for a future Muon Collider and/or Neutrino Factory. As part of this research program, feasibility studies of various types of RF cavities in a high magnetic field environment are in progress. As a unique approach, we have tested a RF cavity filled with a high pressure hydrogen gas with a 400 MeV proton beam in an external magnetic field (B = 3 T). Quantitative information about the number of protons passing through this cavity is an essential requirement of the beam test. The MTA is a flammable gas (hydrogen) hazard zone. Due to safety reasons, no active (energized) beam diagnostic instrument can be used. Moreover, when the magnetic field is on, current transformers (toroids) used for beam intensity measurements do not work due to the saturation of the ferrite material of the transformer. Based on these requirements, we have developed a passive beam diagnostic instrumentation using a combination of a Chromox-6 scintillation screen and CCD camera. This paper describes details of the beam profile and position obtained from the CCD image with B = 0 T and B = 3 T, and for high and low intensity proton beams. A comparison is made with beam size obtained from multi-wires detector. Beam transmission efficiency through a collimator with a 4 mm diameter hole is measured by the toroids and CCD image of the scintillation screen. Results show that the transmission efficiency estimated from the CCD image is consistent with the toroid measurement, which enables us to monitor the beam transmission efficiency even in a high magnetic field environment. ko
dc.description.statementofresponsibility close -
dc.language ENG ko
dc.publisher AMER INST PHYSICS ko
dc.subject External magnetic field ko
dc.subject Feasibility studies ko
dc.subject High magnetic fields ko
dc.subject High pressure hydrogen gas ko
dc.subject Ionization cooling ko
dc.subject Multi-wires detectors ko
dc.subject Quantitative information ko
dc.subject Transmission efficiency ko
dc.title Measurement of transmission efficiency for 400 MeV proton beam through collimator at Fermilab MuCool Test Area using Chromox-6 scintillation screen ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-84879895313 ko
dc.identifier.wosid 000321273500012 ko
dc.type.rims ART ko
dc.description.wostc 1 *
dc.description.scopustc 1 * 2015-12-28 * 2015-11-04 *
dc.identifier.doi 10.1063/1.4808275 ko
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