Radiation environment simulations at the Tevatron, studies of the beam profile and measurement of the Bc meson mass

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The description of a computer simulation of the CDF detector at Fermilab and the adjacent accelerator parts is detailed, with MARS calculations of the radiation background in various elements of the model due to the collision of beams and machine-related losses. Three components of beam halo formation are simulated for the determination of the principal source of radiation background in CDF due to beam losses. The effect of a collimator as a protection for the detector is studied. The simulation results are compared with data taken by a CDF group. Studies of a 150 GeV Tevatron proton beam are performed ... continued below

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143 pages

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Nicolas, Ludovic Y. & U., /Glasgow September 1, 2005.

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Description

The description of a computer simulation of the CDF detector at Fermilab and the adjacent accelerator parts is detailed, with MARS calculations of the radiation background in various elements of the model due to the collision of beams and machine-related losses. Three components of beam halo formation are simulated for the determination of the principal source of radiation background in CDF due to beam losses. The effect of a collimator as a protection for the detector is studied. The simulation results are compared with data taken by a CDF group. Studies of a 150 GeV Tevatron proton beam are performed to investigate the transverse diffusion growth and distribution. A technique of collimator scan is used to scrape the beam under various experimental conditions, and computer programs are written for the beam reconstruction. An average beam halo growth speed is given and the potential of beam tail reconstruction using the collimator scan is evaluated. A particle physics analysis is conducted in order to detect the B{sub c} {yields} J/{psi}{pi} decay signal with the CDF Run II detector in 360 pb{sup -1} of data. The cut variables and an optimization method to determine their values are presented along with a criterion for the detection threshold of the signal. The mass of the B{sub c} meson is measured with an evaluation of the significance of the signal.

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143 pages

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  • Report No.: FERMILAB-THESIS-2005-65
  • Grant Number: AC02-76CH03000
  • Office of Scientific & Technical Information Report Number: 878983
  • Archival Resource Key: ark:/67531/metadc875168

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Office of Scientific & Technical Information Technical Reports

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  • September 1, 2005

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  • Sept. 21, 2016, 2:29 a.m.

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  • Dec. 1, 2016, 12:55 p.m.

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Nicolas, Ludovic Y. & U., /Glasgow. Radiation environment simulations at the Tevatron, studies of the beam profile and measurement of the Bc meson mass, thesis or dissertation, September 1, 2005; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc875168/: accessed August 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.