title: Shielding design for the front end of the CERN SPL.
abstract: CERN is designing a 2.2-GeV Superconducting Proton Linac (SPL) with a beam power of 4 MW, to be used for the production of a neutrino superbeam. The SPL front end will initially accelerate 2 x 10(14) negative hydrogen ions per second up to an energy of 120 MeV. The FLUKA Monte Carlo code was employed for shielding design. The proposed shielding is a combined iron-concrete structure, which also takes into consideration the required RF wave-guide ducts and access labyrinths to the machine. Two beam-loss scenarios were investigated: (1) constant beam loss of 1 Wm(-1) over the whole accelerator length and (2) full beam loss occurring at various locations. A comparison with results based on simplified approaches is also presented.
authors.affiliation: CERN, 1211 Geneva 23, Switzerland.
authors.forename: Matteo
authors.initials: M
authors.lastname: Magistris
authors.forename: Marco
authors.initials: M
authors.lastname: Silari
authors.forename: Helmut
authors.initials: H
authors.lastname: Vincke
mesh_terms: D003198:Computer Simulation; D017076:Computer-Aided Design; D005160:Facility Design and Construction / Q000379:methods*; D008962:Models, Theoretical; D010315:Particle Accelerators / Q000295:instrumentation*; D011829:Radiation Dosage; D011834:Radiation Monitoring / Q000295:instrumentation / Q000379:methods*; D011835:Radiation Protection / Q000295:instrumentation* / Q000379:methods; D018570:Risk Assessment / Q000379:methods; D012307:Risk Factors; D013557:Switzerland