MEETING XVIII -- BEVATRON RESEARCH CONFERENCE -- BEVATRON OPERATION and NUCLEAR EMULSION EXPERIMENTS

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Results of preliminary tests with photographic emulsions using a lip target are discussed. Some methods for the search of heavy mesons are suggested. The preliminary tests with photographic emulsions were designed to investigate exposure conditions inside the Bevatron. These were carried out with stationary targets, since injected targets were not available at that time. The first exposure was designed to study the shielding required for emulsions placed in the direct beam (9 inches from the magnet conterline) during the entire acceleration cycle. Three 200{micro} Ilford G5 emulsions embedded in various thicknesses of brass were exposed for 30 pulses. Nominal maximum ... continued below

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Lofgren, E.J. & Goldhaber, Gerson May 11, 1954.

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Results of preliminary tests with photographic emulsions using a lip target are discussed. Some methods for the search of heavy mesons are suggested. The preliminary tests with photographic emulsions were designed to investigate exposure conditions inside the Bevatron. These were carried out with stationary targets, since injected targets were not available at that time. The first exposure was designed to study the shielding required for emulsions placed in the direct beam (9 inches from the magnet conterline) during the entire acceleration cycle. Three 200{micro} Ilford G5 emulsions embedded in various thicknesses of brass were exposed for 30 pulses. Nominal maximum energy of beam was 3.5 Bev. During the second and third exposure (nominal maximum beam energies 4.1 and 6 Bev respectively) a lip target was placed in front of the emulsions. This was designed so as to dampen out the radial oscillations in the first section (.36 inches thick, 1/2 inch radial length). The beam should then hit the second section (.9 inches thick, .75 inch radial length) which is designed to reduce the beam orbit by {approx} 1 1/4 inches and then hit the emulsions on the next turn. 1/2 inch brass absorber was placed ahead of the emulsions.

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  • Report No.: UCRL-2587
  • Grant Number: DE-AC02-05CH11231
  • DOI: 10.2172/993538 | External Link
  • Office of Scientific & Technical Information Report Number: 993538
  • Archival Resource Key: ark:/67531/metadc1013770

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Office of Scientific & Technical Information Technical Reports

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  • May 11, 1954

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  • Oct. 14, 2017, 8:36 a.m.

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  • Oct. 18, 2017, 10:34 a.m.

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Lofgren, E.J. & Goldhaber, Gerson. MEETING XVIII -- BEVATRON RESEARCH CONFERENCE -- BEVATRON OPERATION and NUCLEAR EMULSION EXPERIMENTS, report, May 11, 1954; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc1013770/: accessed December 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.