Depolarization in the SLC collider arcs

Conference · Mon Jun 27 04:00:00 EDT 1994

OSTI ID:882555

Emma, P; Limburgh, T; Rossmanith, R

In the 1993 running cycle of the Stanford Linear Collider electron spin polarization measurements with a Moller polarimeter at the end of the linac and a Compton polarimeter near the interaction point (IP) indicated a relative polarization loss of up to 20% across the arc. We present calculations of the depolarizing effects where variations in energy, energy spread and transverse emittance as well as changes in orbit and initial spin orientation are taken into account. We compare our results with measurements and conclude that, in standard operating conditions, the relative polarization loss is only 3+/-2%.

• Research Organization: Thomas Jefferson National Accelerator Facility, Newport News, VA
• Sponsoring Organization: USDOE - Office of Energy Research (ER)
• DOE Contract Number: AC05-84ER40150
• OSTI ID: 882555
• Report Number(s): CEBAF-PR-94-28; DOE/ER/40150-3893
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATORS
DEPOLARIZATION
ELECTRONS
LINEAR ACCELERATORS
POLARIMETERS
POLARIZATION
SPIN
SPIN ORIENTATION
STANFORD LINEAR COLLIDER