Square One Systems Design, Inc.
PO Box 10520
Jackson, WY 83002-1050
Instrumentation for Materials Research Using Synchrotron Radiation
Recovery Act - An Energy Tunable X-ray Delay Device
When completed, the Linac Coherent Light Source (LCLS) will produce the world's most concentrated beams of pulsed X-rays. The intense brightness and ultra-short duration of these pulses will provide materials researchers with a powerful experimental tool that promises to revolutionize our understanding of the dynamics of matter. However, to effectively probe ultra-fast dynamic phenomena, a method must be developed to temporally shape incoming X-ray pulses into two pulses with arbitrary relative intensity and time delay. For the LCLS to reach its full scientific potential, there exists an acute need for an apparatus that can manipulate the time structure of hard X-rays over a wide range of energies while preserving peak brightness. A novel, energy tunable X-ray delay device is proposed. This device employs a precisely-aligned train of crystalline beam splitters and reflectors to divide an incoming beam, direct the two resultant beams through paths of different lengths and then to recombine the beams such that their respective pulse trains are slightly out of phase. The device provides for user-selectable time delays from -1.0 to 4.0 nanoseconds. Its innovative design allows it to be automatically reconfigured for compatibility ith the LCLS's full spectrum of available X-ray energies.