Herrmann H W, Kim Y H, McEvoy A M, Zylstra A B, Young C S, Lopez F E, Griego J R, Fatherley V E, Oertel J A, Stoeffl W, Khater H, Hernandez J E, Carpenter A, Rubery M S, Horsfield C J, Gales S, Leatherland A, Hilsabeck T, Kilkenny J D, Malone R M, Hares J D, Milnes J, Shmayda W T, Stoeckl C, Batha S H
Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
Rev Sci Instrum. 2016 Nov;87(11):11E732. doi: 10.1063/1.4962059.
The newest generation of Gas Cherenkov Detector (GCD-3) employed in Inertial Confinement Fusion experiments at the Omega Laser Facility has provided improved performance over previous generations. Comparison of reaction histories measured using two different deuterium-tritium fusion products, namely gamma rays using GCD and neutrons using Neutron Temporal Diagnostic (NTD), have provided added credibility to both techniques. GCD-3 is now being brought to the National Ignition Facility (NIF) to supplement the existing Gamma Reaction History (GRH-6m) located 6 m from target chamber center (TCC). Initially it will be located in a reentrant well located 3.9 m from TCC. Data from GCD-3 will inform the design of a heavily-shielded "Super" GCD to be located as close as 20 cm from TCC. It will also provide a test-bed for faster optical detectors, potentially lowering the temporal resolution from the current ∼100 ps state-of-the-art photomultiplier tubes (PMT) to ∼10 ps Pulse Dilation PMT technology currently under development.
