IBIC2014 - List of Authors (Grandsaert, T.J.)

Paper	Title	Page
TUPF27	Optical System for ESS Target Protection	389
	C.A. Thomas, M. Donna, T.J. Grandsaert, M. Göhran, R. Linander, T.J. Shea ESS, Lund, Sweden
	One specificity of the ESS accelerator and target is that a high power and ultra low emittance proton beam is sent straight onto a Tungsten target. The high power density proton beam from the ESS linac will damage any material it meets. Thus a strategy to protect the target and the target area has to be deployed: the proton beam on target will be defocused and swept, distributing homogeneously the power density on an area 10⁴ times larger than its non defocused area. On its way towards the target, the beam goes through two windows: the proton beam window (PBW) separating the high vacuum of the accelerator to the 1-bar He filled area of the target monolith; and the target window (TW) marking the entrance area of the target wheel. In this paper, we present the PBW imaging system, one of the proton beam diagnostics to be developed for imaging the proton beam current density deposited in the PBW. We will describe the expected performance of the imaging system in order to satisfy the PBW protection requirement. We will also describe the radiative processes which could be used as the source of the imaging system. Finally, we will describe the necessary condition and hardware for the implementation of a protection system for both the PBW and TW.
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Paper

Title

Page

Optical System for ESS Target Protection

389

C.A. Thomas, M. Donna, T.J. Grandsaert, M. Göhran, R. Linander, T.J. Shea
ESS, Lund, Sweden

One specificity of the ESS accelerator and target is that a high power and ultra low emittance proton beam is sent straight onto a Tungsten target. The high power density proton beam from the ESS linac will damage any material it meets. Thus a strategy to protect the target and the target area has to be deployed: the proton beam on target will be defocused and swept, distributing homogeneously the power density on an area 10⁴ times larger than its non defocused area. On its way towards the target, the beam goes through two windows: the proton beam window (PBW) separating the high vacuum of the accelerator to the 1-bar He filled area of the target monolith; and the target window (TW) marking the entrance area of the target wheel. In this paper, we present the PBW imaging system, one of the proton beam diagnostics to be developed for imaging the proton beam current density deposited in the PBW. We will describe the expected performance of the imaging system in order to satisfy the PBW protection requirement. We will also describe the radiative processes which could be used as the source of the imaging system. Finally, we will describe the necessary condition and hardware for the implementation of a protection system for both the PBW and TW.

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reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)