FEL2011 - List of Authors (Smith, T.J.)

Paper	Title	Page
WEPA02	Thermal Acoustic Sensor for High Pulse Energy X-ray FEL Beams	334
	T.J. Smith, J.C. Frisch, E.M. Kraft, J. Loos SLAC, Menlo Park, California, USA G.S. Bentsen Rochester University, Rochester, New York, USA
	Funding: Work supported by Department of Energy Contract DE AC03 76SF00515 The pulse energy density of X-ray FELs will saturate or destroy conventional X-ray diagnostics, and the use of large beam attenuation will result in a beam that is dominated by harmonics. We present results at the LCLS from using a pulse energy detector based on the thermal acoustic effect. In this type of detector an X-ray resistant material (Boron Carbide for this system) intercepts the beam. The pulse heating of this material produces an acoustic pulse that can be detected with high frequency microphones to produce a signal that is linear in the absorbed energy.

Paper

Title

Page

Thermal Acoustic Sensor for High Pulse Energy X-ray FEL Beams

334

T.J. Smith, J.C. Frisch, E.M. Kraft, J. Loos
SLAC, Menlo Park, California, USA
G.S. Bentsen
Rochester University, Rochester, New York, USA

Funding: Work supported by Department of Energy Contract DE AC03 76SF00515
The pulse energy density of X-ray FELs will saturate or destroy conventional X-ray diagnostics, and the use of large beam attenuation will result in a beam that is dominated by harmonics. We present results at the LCLS from using a pulse energy detector based on the thermal acoustic effect. In this type of detector an X-ray resistant material (Boron Carbide for this system) intercepts the beam. The pulse heating of this material produces an acoustic pulse that can be detected with high frequency microphones to produce a signal that is linear in the absorbed energy.