The design of a six-channel one-dimensional neutron/x-ray camera (multicollimator) for the Frascati tokamak upgrade (FTU) machine is described only with regard to the aspects concerning the neutron measurements. The multicollimator, viewing a poloidal cross section of FTU, provides the radial profile of neutron emission from D-D plasmas. The ion temperature profile can be derived in ohmic plasmas if independent data on density are available, while energetic ion tails can be located in the presence of additional rf heating. Information on the position and shape of FTU circular plasmas can also be obtained. The constraints imposed on the collimation and shielding by the compactness of FTU and the expected neutron fluxes are analyzed in detail. The detection system and the performance of the multicollimator are also discussed. © 1995 American Institute of Physics.
All Science Journal Classification (ASJC) codes
Batistoni, P., Esposito, B., Martone, M., & Mantovani, S. (1995). Design of the neutron multicollimator for Frascati tokamak upgrade. Review of Scientific Instruments, 66(10), 4949 - 4957. https://doi.org/10.1063/1.1146478