PEP as a synchrotron radiation source: Status and review

Conference · Wed Mar 01 04:00:00 EST 1989

OSTI ID:6042535

Paterson, J M

The electron-positron collider, PEP, is a 15 GeV storage ring built and operated for high energy physics. As a synchrotron radiation source, it has some unique characteristics which give it extraordinary capabilities which are now beginning to be exploited. Two insertion device beam lines are operational, each illuminated by 2-m-long, 77-mm period undulator magnets. In parasitic operation on high energy physics runs, they provide photons above 10 KeV, with a peak brightness of 10/sup 16/ photons/(s-mm/sup 2//minus/mrad/sup 2/) within a 0.1% band width. This record brightness in this spectral range has already opened up exciting new areas of research. In tests of a low emittance mode of operation at 7.1 GeV, horizontal emittances of about 5 mm-rad were measured, which is about the same as that planned for the new third generation x-ray sources. At a current of 15 mA at 7.1 GeV, the present undulators deliver photon beams from 2.7 to 14 KeV with a peak brightness of about 10/sup 17/. Higher performance can be achieved with longer insertion devices optimized for these energies. Future operation in both parasitic mode and dedicated low emittance mode is planned; this will not only provide new physics opportunities, but the ability to advance the technology of beamline components and instrumentation will be required for the high power, high brightness beams from the third generation x-ray sources. Further performance upgrades are being studied and planned. These will be discussed in this paper along with a description of the present status and a review of PEP's capabilities and limitations. 18 refs., 6 figs., 1 tab.

• Research Organization: Stanford Linear Accelerator Center, Menlo Park, CA (USA)
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 6042535
• Report Number(s): SLAC-PUB-4899; CONF-890335-116; ON: DE89011277
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430400* -- Particle Accelerators-- Storage Rings
BEAM DYNAMICS
BEAM EMITTANCE
BEAM LUMINOSITY
BEAM OPTICS
BEAM-BEAM INTERACTIONS
DESIGN
PEP STORAGE RINGS
PERFORMANCE
RADIATION SOURCES
STORAGE RINGS
SYNCHROTRON RADIATION SOURCES
USES