The SLAC Linac During the PEP-II Era

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The 3 km long linac of the Stanford Linear Accelerator Center (SLAC) has for many years provided low emittance beams for the SLC collider. With the beginning of the operation of the B-Factory, PEP-II, the linac will now serve primarily as an injector for the low (LER) and high energy rings (HER) of PEP-II. The different beams are stabilized by a new regional linac energy management (LEM) program, which keeps the magnet strengths and therefore the deflections constant at each of the four extraction points. They are at 3.1 GeV (positrons for LER), 9 GeV (electrons for HER), 25 GeV ... continued below

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Decker, Franz-Josef April 7, 1999.

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Description

The 3 km long linac of the Stanford Linear Accelerator Center (SLAC) has for many years provided low emittance beams for the SLC collider. With the beginning of the operation of the B-Factory, PEP-II, the linac will now serve primarily as an injector for the low (LER) and high energy rings (HER) of PEP-II. The different beams are stabilized by a new regional linac energy management (LEM) program, which keeps the magnet strengths and therefore the deflections constant at each of the four extraction points. They are at 3.1 GeV (positrons for LER), 9 GeV (electrons for HER), 25 GeV (electrons for the positron production), and 28.5 GeV (electrons for other purposes such as test beams, plasma experiments, and iris destruction tests). Since many components of the accelerator can be configured on each pulse, it is possible to run these beams with different intensities, bunch length, energies, rates, etc. Only the quadrupole magnet strengths are fixed, producing different lattices for different energy beams, which must be matched at extraction from the linac. Since PEP-II injection does not require all of the full 120 Hz rate, it is possible to run other experiments at the same time. That might include an extension of the SLC run or a high charge, fixed target experiment, which will require some additional pulsed magnets.

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  • Other Information: PBD: 7 Apr 1999

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  • Report No.: SLAC-PUB-8112
  • Grant Number: AC03-76SF00515
  • DOI: 10.2172/10050 | External Link
  • Office of Scientific & Technical Information Report Number: 10050
  • Archival Resource Key: ark:/67531/metadc628112

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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.

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  • April 7, 1999

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • Feb. 5, 2016, 7:41 p.m.

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Decker, Franz-Josef. The SLAC Linac During the PEP-II Era, report, April 7, 1999; Menlo Park, California. (digital.library.unt.edu/ark:/67531/metadc628112/: accessed December 13, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.