Invited Paper
Radiation protection aspects of a 4 MW target
1 Politecnico di Milano, CESNEF, Via Ponzio 34/3, 20133 Milan, Italy
2 CERN, 1211 Geneva 23, Switzerland
* Corresponding author: marco.silari{at}cern.ch
The CERN Superconducting Proton Linac (SPL) is expected to provide a 2.2 GeV, 4 MW proton beam to feed facilities such as, for example, a neutrino factory or a neutrino superbeam. Material activation in such facilities is an important aspect that has to be taken into account at an early stage in designing it. In particular, the choice of the target has consequences on the induced radioactivity and dose rates in the target station and its surroundings. In the present work, the radiological aspects of a stationary target made up of tantalum pellets are compared with those of a free-surface jet of mercury. An estimation of the hadronic inelastic interactions and the production of residual nuclei in the target, the two concentric magnetic horns, the decay tunnel, the surrounding rock and a downstream dump were performed for both targets using the Monte Carlo code FLUKA. The aim was to assess the dose-equivalent rate that is to be expected during maintenance work and to evaluate the amount of residual radioactivity, which will have to be disposed of after the facility has ceased operation. The problem of after-heat in the tantalum target and the consequences of raising the proton beam energy from 2.2 to 4 GeV were also investigated.
![]()
CiteULike
Connotea
Del.icio.us What's this?
This article has been cited by other articles:
![]() |
Q. Z. Yu, T. J. Liang, and W. Yin Activity and radiation protection studies for the W-Ta target of CSNS Radiat Prot Dosimetry, September 1, 2009; 136(3): 216 - 221. [Abstract] [Full Text] [PDF] |
||||
