Target and orbit feedback simulations of a muSR beam line at BNL

MacKay, W.; Blaskiewicz, M.; Fischer, W.; Pile, P.

doi:10.2172/1210188

Title: Target and orbit feedback simulations of a muSR beam line at BNL

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Abstract

Well-polarized positive surface muons are a tool to measure the magnetic properties of materials since the precession rate of the spin can be determined from the observation of the positron directions when the muons decay. For a dc beam an ideal µSR flux for surface µ⁺ should be about 40 kHz/mm². In this report we show how this flux could be achieved in a beam line using the AGS complex at BNL for a source of protons. We also determined that an orbit feedback system with a pair of thin silicon position monitors and kickers would miss the desired flux by at least an order of magnitude, even with perfect time resolution and no multiple scattering.

Authors:

MacKay, W. ^[1]; Blaskiewicz, M. ^[1]; Fischer, W. ^[1]; Pile, P. ^[1]

Brookhaven National Lab. (BNL), Upton, NY (United States)

Publication Date:: Tue Jul 28 00:00:00 EDT 2015

Research Org.:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Nuclear Physics (NP)

OSTI Identifier:: 1210188

Report Number(s):: BNL-108273-2015-IR
R&D Project: KBCH139; 18031; KB0202011

DOE Contract Number:: SC00112704

Resource Type:: Technical Report

Country of Publication:: United States

Language:: English

Subject:: 43 PARTICLE ACCELERATORS

Citation Formats


                    MacKay, W., Blaskiewicz, M., Fischer, W., and Pile, P. Target and orbit feedback simulations of a muSR beam line at BNL.  United States: N. p., 2015. 
        Web.  doi:10.2172/1210188.

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                    MacKay, W., Blaskiewicz, M., Fischer, W., & Pile, P. Target and orbit feedback simulations of a muSR beam line at BNL.  United States.  https://doi.org/10.2172/1210188

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                    MacKay, W., Blaskiewicz, M., Fischer, W., and Pile, P. 2015.  
        "Target and orbit feedback simulations of a muSR beam line at BNL".  United States.  https://doi.org/10.2172/1210188.  https://www.osti.gov/servlets/purl/1210188.

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@article{osti_1210188,

  title        = {Target and orbit feedback simulations of a muSR beam line at BNL},

  author       = {MacKay, W. and Blaskiewicz, M. and Fischer, W. and Pile, P.},

  abstractNote = {Well-polarized positive surface muons are a tool to measure the magnetic properties of materials since the precession rate of the spin can be determined from the observation of the positron directions when the muons decay. For a dc beam an ideal µSR flux for surface µ+ should be about 40 kHz/mm2. In this report we show how this flux could be achieved in a beam line using the AGS complex at BNL for a source of protons. We also determined that an orbit feedback system with a pair of thin silicon position monitors and kickers would miss the desired flux by at least an order of magnitude, even with perfect time resolution and no multiple scattering.},

  doi          = {10.2172/1210188},

  url          = {https://www.osti.gov/biblio/1210188},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Jul 28 00:00:00 EDT 2015},

  month        = {Tue Jul 28 00:00:00 EDT 2015}

}

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