International Topical Meeting on Nuclear Research Applications and Utilization of Accelerators
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AT/P5-06
Design and Construction of a New Ion Beam Analysis (IBA) Facility at the 3 MV Van de Graaff Accelerator of Bangladesh Atomic Energy Commission A.K.M. Fazlul Hoque, Md. Asad Shariff, Md. Joynal Abedin, K.Md. Amjad Hussain, Md. Abu Accelerator Facilities Division, Atomic Energy Centre, Ramna (Dhaka), Bangladesh Corresponding Author: kazi326@yahoo.com A new beam line and ion beam analysis (IBA) facility has been designed and constructed at the left beam line of the 3 MV Van de Graaff accelerator of Atomic Energy Centre Dhaka (AECD). Thegoal is to perform standard ion beam analysis such as proton induced X-ray emmission (PIXE), proton induced gamma emmission (PIGE, Rutherford Back Scattering spectrometry(RBS), Nuclear Reaction analysis (NRA), etc. with a millimeter size beam. A number of equipments such as new detectors,data acquisition system, data analysis software, vacuum systems, etc were procured and installed. Different necessary attachments were designed and fabricated at AECD workshop to install the new equipments. To be able to perform multiple IBA techniques simultaneously a special, large chamber was designed with computer control sample movement facility. A good control of the size of the beam spot and the current has been achieved with a combination of slits, ion source focusing and quadrupole magnets. The chamber was constructed under a IAEA-TC project BGD/4/023 funding at Ruder Boscovic Institute, Jagreb, Croatia. In the new ion beam analysis (IBA) facility a fine homogeneous beam spot size of 3 or 5 or 7 mm diameter and beam current in the range of 3 - 100 nA are achievable using slits and quadrupole magnets. The beam line and the experimental chamber are described in this paper. |
