Radiation Studies for the Environmental Protection at the Beam Delivery System for the Next Linear Collider
The concentration of induced radionuclides in the soil and groundwater around, and air inside the collimation section of the Beam Delivery System of the Next Linear Collider are calculated with the FLUKA Monte Carlo code. The concentration of {sup 3}H and {sup 22}Na in groundwater are comparable to the drinking water limits. The fluence of particles (photon, neutron, proton and pion) in the air inside the tunnel for the collimation section is also calculated with FLUKA. The induced activities of {sup 3}H, {sup 7}Be, {sup 11}C, {sup 13}N, {sup 15}O, and {sup 41}Ar are then estimated by folding the particle fluences with various nuclear cross sections. The worker exposure during access after accelerator shutdown and the general public dose from radioactivity released to the environment are studied. The concern is from the short-lived radioisotopes of {sup 13}N and {sup 15}O, produced mainly by photons, and {sup 41}Ar produced by thermal neutrons. The results show that the radiological consequences from the air activation are minor.
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC03-76SF00515
- OSTI ID:
- 763813
- Report Number(s):
- SLAC-PUB-8488; TRN: US0004847
- Resource Relation:
- Other Information: PBD: 3 Jul 2000
- Country of Publication:
- United States
- Language:
- English
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