Simple Lattice for the Precoo1er/Accumu1ator Scheme

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The Precoo1er/Accumu1ator scheme uses RF stacking to collect antiprotons produced by a mu1tipu1se proton extraction from the Main Ring. The stacking requires X{sub p} {approx} 2.5 m at the injection septum; therefore, a simple expansion of the present precoo1er lattice from {bar R} = 75 m to {bar R} = 101 m is not practical. It is possible that an appropriate high-X{sub p} insertion could be designed so that the increase in {gamma}{sub T} from the larger ring would cancel the decrease caused by the insertion, but one may wish also to consider lowering {gamma}{sub T} to run the ring ... continued below

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3 pages

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MacLachlan, James October 23, 1980.

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Description

The Precoo1er/Accumu1ator scheme uses RF stacking to collect antiprotons produced by a mu1tipu1se proton extraction from the Main Ring. The stacking requires X{sub p} {approx} 2.5 m at the injection septum; therefore, a simple expansion of the present precoo1er lattice from {bar R} = 75 m to {bar R} = 101 m is not practical. It is possible that an appropriate high-X{sub p} insertion could be designed so that the increase in {gamma}{sub T} from the larger ring would cancel the decrease caused by the insertion, but one may wish also to consider lowering {gamma}{sub T} to run the ring always above transition so that the {bar p} acceleration could go not to 8 GeV but something on the order of 22 GeV thereby avoiding transition in the Main Ring and helping the Main Ring aperture bottleneck. This note discusses the possibility of a simple FODO lattice with missing magnets for dispersion killing and the stochastic cooling straight sections. For transverse cooling one would need to replace the FODO straight sections with high {beta} drifts to keep the phase advance over the cooling section sufficiently small. The same type of insertion as used in the current precoo1er design could be employed in the proposed lattice as well.

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3 pages

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  • Report No.: FERMILAB-PBAR-NOTE-098
  • Grant Number: AC02-07CH11359
  • DOI: 10.2172/982476 | External Link
  • Office of Scientific & Technical Information Report Number: 982476
  • Archival Resource Key: ark:/67531/metadc1015274

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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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Creation Date

  • October 23, 1980

Added to The UNT Digital Library

  • Oct. 14, 2017, 8:36 a.m.

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  • Oct. 23, 2017, 8:42 p.m.

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MacLachlan, James. Simple Lattice for the Precoo1er/Accumu1ator Scheme, report, October 23, 1980; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc1015274/: accessed December 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.