Comparisons of Yield Calculations with Data

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Given what is claimed to a reasonably accurate technique for calculating the pbar yield, it is useful to ask for comparisons with the data available from the recent commissioning run. The simplest comparison to make is that of the yield. The number of pbars circulating in the Debuncher was measured many times; the total number of secondaries at IC728 in AP-2 was also measured many times. The ratio of pbars to total flux at IC728 was measured once (Bk. I, p 166); this number was {bar P}/total = 0.032. Typically, the ratio of secondaries at IC728 to protons on target ... continued below

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Dugan, G. February 1, 1986.

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Description

Given what is claimed to a reasonably accurate technique for calculating the pbar yield, it is useful to ask for comparisons with the data available from the recent commissioning run. The simplest comparison to make is that of the yield. The number of pbars circulating in the Debuncher was measured many times; the total number of secondaries at IC728 in AP-2 was also measured many times. The ratio of pbars to total flux at IC728 was measured once (Bk. I, p 166); this number was {bar P}/total = 0.032. Typically, the ratio of secondaries at IC728 to protons on target was about 0.0012 (this was about the same number, independent of whether the lens was operated at 600 or 1000 T/m.). Thus, at IC728 we have N{sub P}/N{sub {bar P}} {approx} 1.2 x 10{sup -3} x 3.2 x 10{sup -2} = 3.8 x 10{sup -5} = 38 ppm.

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  • Report No.: FERMILAB-PBAR-NOTE-448
  • Grant Number: AC02-07CH11359
  • DOI: 10.2172/948897 | External Link
  • Office of Scientific & Technical Information Report Number: 948897
  • Archival Resource Key: ark:/67531/metadc929071

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Office of Scientific & Technical Information Technical Reports

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  • February 1, 1986

Added to The UNT Digital Library

  • Nov. 13, 2016, 7:26 p.m.

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  • Nov. 22, 2016, 11:08 p.m.

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Dugan, G. Comparisons of Yield Calculations with Data, report, February 1, 1986; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc929071/: accessed October 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.