A Magnetic Particle-Time-Of-Flight (MagPTOF) diagnostic for simultaneous measurements of shock- and compression bang-times at the NIF

A magnetic particle-time-of-flight (MagPTOF) diagnostic has been designed for simultaneous measurements of shock- and compression-bang time at the National Ignition Facility (NIF). This type of measurement combined with the measured shock-burn weighted $\rho$R will significantly constrain the modeling of the implosion dynamics. The MagPTOF design is an upgrade to the existing particle time-of-flight (pTOF) diagnostic, which has recorded accurate bang times in cryogenic DT implosions, DT exploding pushers and D$^3$He implosions with accuracy better than 70 ps. The inclusion of a deflecting magnet will increase proton signal-to-background by a factor of 1000, allowing for simultaneous measurements of shock- and compression-bang times in D$^3$He-filled surrogate implosions using D$^3$He protons and DD-neutrons, respectively. This work was supported in part by the U.S. DOE, NNSA, LLNL and LLE.