A Possible Common RFQD in the AD Experimental Area

The AD is today delivering 5.3 MeV antiproton beams to 4 experiments: ATRAP, ATHENA, ASACUSA and the new ACE collaboration installed in the DEM-area. Furthermore, the ASACUSA experiment is using an RFQD to decelerate pbars to energies of around 60 keV. (Fig. 1) A preliminary study has been made in order to investigate the possibilities of installing a new RFQD to decelerate the AD beam from 5.3 MeV to energies of around 60 keV. A new RFQD associated with a Penning trap and a low energy beam transport system could supply several AD experiments with 60 keV beams. The advantage would be a greatly improved antiproton flux (approximately 2 orders of magnitude) for the experiments that today use degrader foils for deceleration (ATHENA and ATRAP), and it would also open up possibilities for additional experiments. However, special attention has to be paid to the study and design of the low energy beam transport system and ejection from the trap since these techniques are not yet well known or mastered.