PAC2013 - List of Authors (Lefferts, R.S.)

Paper	Title	Page
THPAC33	Scintillator Diagnostics for the Detection of Laser Accelerated Ion Beams	1208
	N.M. Cook Stony Brook University, Stony Brook, USA R.S. Lefferts SBUNSL, Stony Brook, New York, USA O. Tresca BNL, Upton, Long Island, New York, USA V. Yakimenko SLAC, Menlo Park, California, USA
	Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy. Radiation pressure acceleration with ultraintense laser pulses presents an exciting new scheme for accelerating ions. One of the advantages conferred by using a gaseous laser and target is the potential for a fast (several Hz) repetition rate. This requires diagnostics which are not only comprehensive for a single shot, but also capable of repeated use. We consider several scintillators as candidates for an imaging diagnostic for protons accelerated to MeV energies by a CO2 laser focused on a gas jet target. We have measured the response of chromium-doped alumina (Chromox), CsI:Tl, and two polyvinyl toluene (PVT) screens to protons in the 2 – 8 MeV range using a CCD camera. We have calibrated the luminescent yield in terms of photons emitted per incident proton for each scintillator. We also discuss how light scattering and material properties affect detector resolution. Furthermore, we consider material damage and the presence of an afterglow under intense exposures. Our analysis reveals a near order of magnitude greater yield from Chromox in response to proton beams at > 5 MeV energies, while scattering effects favor PVT at lower energies. Many thanks are due to M. Babzien, A. Drees, K. Kusche, and A. Lipski for their contributions to this work.

Paper

Title

Page

Scintillator Diagnostics for the Detection of Laser Accelerated Ion Beams

1208

N.M. Cook
Stony Brook University, Stony Brook, USA
R.S. Lefferts
SBUNSL, Stony Brook, New York, USA
O. Tresca
BNL, Upton, Long Island, New York, USA
V. Yakimenko
SLAC, Menlo Park, California, USA

Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy.
Radiation pressure acceleration with ultraintense laser pulses presents an exciting new scheme for accelerating ions. One of the advantages conferred by using a gaseous laser and target is the potential for a fast (several Hz) repetition rate. This requires diagnostics which are not only comprehensive for a single shot, but also capable of repeated use. We consider several scintillators as candidates for an imaging diagnostic for protons accelerated to MeV energies by a CO2 laser focused on a gas jet target. We have measured the response of chromium-doped alumina (Chromox), CsI:Tl, and two polyvinyl toluene (PVT) screens to protons in the 2 – 8 MeV range using a CCD camera. We have calibrated the luminescent yield in terms of photons emitted per incident proton for each scintillator. We also discuss how light scattering and material properties affect detector resolution. Furthermore, we consider material damage and the presence of an afterglow under intense exposures. Our analysis reveals a near order of magnitude greater yield from Chromox in response to proton beams at > 5 MeV energies, while scattering effects favor PVT at lower energies.
Many thanks are due to M. Babzien, A. Drees, K. Kusche, and A. Lipski for their contributions to this work.