A novel scintillator-based imaging neutral particle analyzer (INPA), which provides energy-resolved radial profiles of confined fast ions, has been designed and installed on the DIII-D tokamak. The system measures charge-exchanged energetic neutrals by viewing an “active” neutral beam through a 1D pinhole camera with a rear collimating slit that defines the neutral particle collection...
Neutron, gamma-ray and x-ray imaging are important diagnostic tools at the National Ignition Facility (NIF) for measuring the two-dimensional (2D) size and shape of the neutron producing region, for probing the remaining ablator, and measuring the extent of the DT plasmas during the stagnation phase of Inertial Confinement Fusion (ICF) implosions. Novel analysis tools for primary fusion and...
A quartz based Cherenkov radiator has been implemented at the National Ignition Facility (NIF) to provide a new high precision measurement of the spectrum of 14.1 MeV DT fusion neutrons. This detector has two benefits over traditional scintillator-based nToFs. (1) it enables a high precision (<50ps) co-registered measurement of both a thresholded gamma spectrum and the neutron spectrum on a...
Triplet sets of replaceable graphite rod collector probes (CPs), each with collection surfaces on opposing faces oriented normal to the magnetic field, were inserted at the outboard mid-plane of DIII-D to understand divertor tungsten (W) transport in the Scrape-Off Layer (SOL). Each CP collects particles along field lines with different parallel collection lengths (determined by the rod...
