PAC09 - List of Authors (Woodward, M.L.)

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Woodward, M.L.

Paper	Title	Page
WE6RFP033	Design and Development of the T2K Pion Production Target	2860
	C.J. Densham, M. Baldwin, M.D. Fitton, V.B. Francis, M.T. Rooney, M.L. Woodward STFC/RAL, Chilton, Didcot, Oxon A. Ichikawa Kyoto University, Kyoto T. Nakadaira, T. Sekiguchi KEK, Ibaraki
	Funding: Science and Technology Facilities Council The T2K experiment will utilise the highest pulsed power proton beam ever built to generate an intense beam of neutrinos. This uses the conventional technique of colliding the 0.75 MW 30 GeV proton beam with a graphite target and using a magnetic horn system to collect pions of one charge and focus them into a decay volume where the neutrino beam is produced. The target is a two interaction length (900 mm long) graphite target supported directly within the bore of the first magnetic horn which generates the required field with a pulsed current of 300 kA. This paper describes the design and development of the target system required to meet the demanding requirements of the T2K facility. Challenges include radiation damage, shock waves resulting from a 100 K temperature rise in the graphite material during each beam spill, design and optimisation of the helium coolant flow, and integration with the pulsed magnetic horn. Conceptual and detailed engineering studies were required to develop a target system that could satisfy these requirements and could also be replaced remotely in the event of a target failure.

Paper

Title

Page

WE6RFP033

Design and Development of the T2K Pion Production Target

2860

C.J. Densham, M. Baldwin, M.D. Fitton, V.B. Francis, M.T. Rooney, M.L. Woodward
STFC/RAL, Chilton, Didcot, Oxon
A. Ichikawa
Kyoto University, Kyoto
T. Nakadaira, T. Sekiguchi
KEK, Ibaraki

Funding: Science and Technology Facilities Council

The T2K experiment will utilise the highest pulsed power proton beam ever built to generate an intense beam of neutrinos. This uses the conventional technique of colliding the 0.75 MW 30 GeV proton beam with a graphite target and using a magnetic horn system to collect pions of one charge and focus them into a decay volume where the neutrino beam is produced. The target is a two interaction length (900 mm long) graphite target supported directly within the bore of the first magnetic horn which generates the required field with a pulsed current of 300 kA. This paper describes the design and development of the target system required to meet the demanding requirements of the T2K facility. Challenges include radiation damage, shock waves resulting from a 100 K temperature rise in the graphite material during each beam spill, design and optimisation of the helium coolant flow, and integration with the pulsed magnetic horn. Conceptual and detailed engineering studies were required to develop a target system that could satisfy these requirements and could also be replaced remotely in the event of a target failure.