Energy calibration of SPEAR by g-2 precession

Technical Report · Sat Sep 01 04:00:00 EDT 1979

DOI:https://doi.org/10.2172/6584330· OSTI ID:6584330

Fischer, G E; Gustavson, D B; Johnson, J R; Murray, J J; Phillips, T J; Prepost, R; Schwitters, R F; Sinclair, C K; Wiser, D E

We have checked the absolute energy calibration of SPEAR near 3.6 GeV to an accuracy of +- 0.02% by measuring the g-2 precession frequency of a stored positron beam at a fixed machine energy. This is considerably more accurate than the +- 0.01% systematic uncertainty assigned to the energy calibration on the basis field measurements of the SPEAR magnets. Alternatively, these results can be interpreted as a large-..gamma.. (..gamma.. /approximately/ 7055) measurement of the positron magnetic anomaly a/sub e+/ = (1.1599 +- 0.0012) /times/ 10/sup /minus/3/. 6 refs., 2 figs., 1 tab.

• Research Organization: Stanford Linear Accelerator Center, Menlo Park, CA (USA)
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 6584330
• Report Number(s): SLAC-PEP-NOTE-316; ON: DE89006267
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430400* -- Particle Accelerators-- Storage Rings
BEAM BENDING MAGNETS
BEAM DYNAMICS
BEAMS
BETATRON OSCILLATIONS
CALIBRATION
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
ENERGY
EQUIPMENT
LEPTON BEAMS
MAGNETS
MEASURING METHODS
ORIENTATION
OSCILLATIONS
PARTICLE BEAMS
POSITRON BEAMS
SPIN ORIENTATION
STORAGE RINGS