Abstract
A neutron spectrometer of new type for fusion diagnostics is presently under construction at the Dept. of Neutron Research, Uppsala University1. The spectrometer is based on the Magnetic Proton Recoil (MPR) method and combines high efficiency with good energy resolution and high count rate capability. The MPR spectrometer will be installed as a diagnostic on JET and operated during the coming DT phase2. It is also a prototype for an ITER diagnostics, aimed at providing information on a range of plasma quantities, such as ion temperature (Ti), fuel ion densities (nD, nT), α-particle effects, and total neutron yield3. Due to its high count rate capability, the MPR can offer high quality data at kHz sampling rates. In this paper we will mainly deal with the status of the MPR construction programme.
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