Design of air cooled quadrupole magnets for high current injector at IUAC

The high current injector facility (HCI) at IUAC consists of a high temperature superconducting electron cyclotron resonance ion source (HTS-ECRIS) to produce higher currents of multiply charge states. The ions are first extracted at 30kV potential from the source and then mass analysed using a combination of a quadrupole doublet and a large acceptance combined function dipole magnet [1]. Ions are further accelerated to 8keV/u using an electrostatic accelerating column. Ions are further bunched using a multi harmonic RF buncher and transported using a set of magnetic quadrupoles to the entrance of radio frequency quadrupole (RFQ) for subsequent acceleration. The beam transport section from source to RFQ is known as low energy beam transport section (LEBT). Here, we are presenting the ion optical and hardware design of magnetic quadrupoles involved in this section.