Abstract
MARA is a new recoil mass separator in the Accelerator Laboratory of University of Jyväskylä (JYFL-ACCLAB) with a mass resolving power of 250 and an ion-optical configuration of QQQDEDM. In this paper the construction, control and conditioning of its electrostatic deflector are described. The deflector was designed for voltages up to 500kV accross the gap, corresponding to a 3.6MV/m field, to accomodate fusion reactions with inverse kinematics. Titanium electrodes with a beam dump opening in the anode are used. The conditioning procedure, which has been used repeatedly to take the deflector to 450kV, is described, along with the safety systems and precautions that are in place.
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