"First x-ray test of the Icarus nanosecond-gated camera"

Philip A. Hart: Arthur Carpenter, Liam Claus, Daniel Damiani, Matthew Dayton, Franz-Josef Decker, Arianna Gleason, Philip Heimann, Emily Hurd, Emma McBride, Silke Nelson, Marcos Sanchez, Sanghoon Song, Diling Zhu; SPIE Optics + Optoelectronics, 04/24/19.

Additional Authors: Arthur Carpenter, Liam Claus, Daniel Damiani, Matthew Dayton, Franz-Josef Decker, Arianna Gleason, Philip Heimann, Emily Hurd, Emma McBride, Silke Nelson, Marcos Sanchez, Sanghoon Song, Diling Zhu

Abstract:

The Icarus camera system, combining a sensor developed by Sandia and readout electronics by LLNL, provides 0.5 Hz bursts of four frames with 3 ns separation. The sensor has 1024×512 25 μm pixels and is 25 μm thick. The system was developed for single line-of-sight measurements at the ns time scale for electrons and X-rays at facilities such as NIF. We report on initial tests of the Icarus system with hard X-rays pulse pairs with nanosecond time spacings at the LCLS, a newly available beam mode. We describe noise, gate profiles, gain, cross-talk, persistence, linearity, and quantum efficiency for the first version of the sensor. We present evidence of the suitability of the system for science measurements at a free electron laser with an X-ray pump X-ray probe experiment. We expect further developments of the technology to allow use of 350 ps bunch separation from the LCLS accelerator and, with a pulsed delay tube like DIXIE, to eventually reach sub-25 ps time-resolved X-ray imaging of processes such as plasma evolution.