Beam commissioning and neutron radiography on a high current deuteron RFQ

The high current deuteron RFQ has been developed and widely used in many projects, especially for accelerator based neutron source and its applications. This paper presents the beam dynamics, structure design, RF full power test and beam commissioning of PKUNIFTY (Peking University Neutron Imaging Facility), which consists of a high current compact ECR source, a 201.5 MHz four-rod deuteron RFQ, thick beryllium target, moderator, collimator and neutron radiography system. RF and beam commissioning with duty cycle of 4% show the RFQ inter-vane voltage reaches 70 kV at about 240 kW, the delivered peak current of deuteron beam is about 12 mA at 300 kW with the beam transmission of about 60%. The improvement of transmission is going on. The initial neutron radiography test has been carried out. The results will promote the future development of small accelerator based neutron source. Copyright ? 2013 by JACoW.EI