HB2014 - List of Authors (Kotrle, G.)

Paper	Title	Page
MOPAB48	Design of a New Beam Current Monitor Under Heavy Heat Load	154
	J.L. Sun, P.-A. Duperrex, G. Kotrle PSI, Villigen PSI, Switzerland
	Funding: The research leading to these results has received funding from the European Community's Seventh Framework Programme (FP7/2007-2013) under grant agreement n.°290605 (PSI-FELLOW/COFUND) At the Paul Scherrer Institute (PSI), a 590 MeV 50 MHz High Intensity Proton Accelerator (HIPA) has been operated for many years at 2.2 mA / 1.3 MW and it will be soon upgraded to 3 mA / 1.8 MW. A spallation source target is driven from the HIPA. Downstream from this target is a beam current monitor, called MHC5. The thermal load in MHC5 induced by the scattered particles from the target causes the resonance frequency of the current monitor to drift. Even with an active cooling system, the drift remains a problem. A new beam current monitor has been designed to overcome this shortcoming. The mechanical design of the new monitor has been completed and manufacturing will start soon. A novel feature is the use of graphite for the resonator cavity to give thermal self-compensation, structural stability and improved thermal load distribution. The design and the preliminary lab test results are presented in this paper.

Paper

Title

Page

Design of a New Beam Current Monitor Under Heavy Heat Load

154

J.L. Sun, P.-A. Duperrex, G. Kotrle
PSI, Villigen PSI, Switzerland

Funding: The research leading to these results has received funding from the European Community's Seventh Framework Programme (FP7/2007-2013) under grant agreement n.°290605 (PSI-FELLOW/COFUND)
At the Paul Scherrer Institute (PSI), a 590 MeV 50 MHz High Intensity Proton Accelerator (HIPA) has been operated for many years at 2.2 mA / 1.3 MW and it will be soon upgraded to 3 mA / 1.8 MW. A spallation source target is driven from the HIPA. Downstream from this target is a beam current monitor, called MHC5. The thermal load in MHC5 induced by the scattered particles from the target causes the resonance frequency of the current monitor to drift. Even with an active cooling system, the drift remains a problem. A new beam current monitor has been designed to overcome this shortcoming. The mechanical design of the new monitor has been completed and manufacturing will start soon. A novel feature is the use of graphite for the resonator cavity to give thermal self-compensation, structural stability and improved thermal load distribution. The design and the preliminary lab test results are presented in this paper.