Investigation of the radiation background in the interaction region of the medium-energy electron relativisitic heavy ion collider (MeRHIC)

Conference · Mon May 04 00:00:00 EDT 2009

OSTI ID:952526

Beebe-Wang, J

There are three main sources of the radiation background in MeRHIC: forward synchrotron radiation generated upstream of the detector, the direct backward radiation caused by the photons hitting beampipe downstream of the detector, and the indirect secondary radiation caused by hard photons hitting vacuum systems, masks, collimators, absorbers or any other elements in the interaction region. In this paper, we first calculate the primary radiation distribution by employing electromagnetic theory. Then we obtain the direct backward scattering rate by applying the kinematic Born approximation deduced from scattering dynamics. The diffuse scattering cross section is calculated as a function of the surface properties of the MeRHIC vacuum system. Finally, the dominating physical processes and minimization of indirect secondary radiation is presented and discussed.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States)
• Sponsoring Organization: Doe - Office Of Science
• DOE Contract Number: DE-AC02-98CH10886
• OSTI ID: 952526
• Report Number(s): BNL-81796-2009-CP; KB0202011; TRN: US0902513
• Resource Relation: Conference: Particle Accelerator Conference; Vancouver, B.C., Canada; 20090504 through 20090508
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
43 PARTICLE ACCELERATORS
ACCELERATORS
BORN APPROXIMATION
COLLIMATORS
CROSS SECTIONS
DIFFUSE SCATTERING
DISTRIBUTION
ELECTRONS
HEAVY IONS
MINIMIZATION
PHOTONS
RADIATIONS
SCATTERING
SURFACE PROPERTIES
SYNCHROTRON RADIATION
VACUUM SYSTEMS