Quadrupole Magnet Requirements for Achromatic Operation of DIAC Nano-beamline

DIAC (Daejeon ion accelerator complex) is part of KEK's TRIAC (Tokai Radioactive Isotope Accelerator Complex), which was transferred to KAERI in April 2012 and installed. It consists of ion source, RFQ, and IH, and the specifications of each component are shown in Table I. To use accelerated beams, three beamlines are planned to be installed downstream of the accelerator, called Nano, Material, and Micro-beams, respectively. The beamlines are configured as shown in Fig. 1. The specifications of the quadrupole magnet for the achromatic operation of the Nano-beamline for DIAC have been investigated. Experimental confirmation is needed to see if the current quadrupole magnet satisfies the specifications. Based on these experiments, the whole system for the achromatic operation will be designed and prepared for user service.