A Review of the 1991 E760 Run

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The 1991 E760 run was highly successful. This note is an attempt to record some important information regarding Accumulator operation during the run, so that it will be easily accessible for the next E760 run. The topics are not in any particularly relevant order, but are taken mostly from a seminar given by M. Church on 2/13/92. Much ramp data resides in the 'E760 Ramps Notebook' and much other data resides in E760 logbooks V, VI, VII, and VIII. Table 1 summarizes the data collected during the run. Fig. 1 shows the luminosity collected week by week and the average ... continued below

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26 pages

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Church, M. February 20, 1992.

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Description

The 1991 E760 run was highly successful. This note is an attempt to record some important information regarding Accumulator operation during the run, so that it will be easily accessible for the next E760 run. The topics are not in any particularly relevant order, but are taken mostly from a seminar given by M. Church on 2/13/92. Much ramp data resides in the 'E760 Ramps Notebook' and much other data resides in E760 logbooks V, VI, VII, and VIII. Table 1 summarizes the data collected during the run. Fig. 1 shows the luminosity collected week by week and the average stacking rate per stack. Fig. 2 shows the luminosity integrated through the run. A total of 31 pb{sup -1} was collected. Fig 3. shows a typical deceleration (above transition) with a typical efficiency of 95%. Early in the run the efficiency was very close to 100%. I suspect there was an aperture restriction - possibly a momentum aperture limitation as we wandered too close to the edge of the momentum aperture. The deceleration efficiency really should be 100%. Fig. 4 shows a typical data-taking cycle. The break point 2/3rds through the data-taking is a deceleration to the {eta}{sub c}. Fig. 4a and 4b show horizontal and vertical aperture as a function of momentum for the 1990 ramps and 1991 ramps as measured in Jan. 1991. During the run, the actual apertures were known to be smaller. The problem of radiation during stacking was solved during this run by the addition of more shielding. Fig. 4c shows the final layout of shielding blocks. A 40 mA stack gave about 3 mrads of radiation in the Pb-G as measured by standard chipmunks. The total amount of radiation received during the run was about 100 rads - bringing the total to about 200 rads for the Pb-G.

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26 pages

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  • Report No.: FERMILAB-PBAR-NOTE-524
  • Grant Number: AC02-07CH11359
  • DOI: 10.2172/983961 | External Link
  • Office of Scientific & Technical Information Report Number: 983961
  • Archival Resource Key: ark:/67531/metadc1014283

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • February 20, 1992

Added to The UNT Digital Library

  • Oct. 14, 2017, 8:36 a.m.

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  • Oct. 25, 2017, 11:55 a.m.

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Church, M. A Review of the 1991 E760 Run, report, February 20, 1992; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc1014283/: accessed April 24, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.