1.7 MV Tandetron Accelerator
Embedded Files
Specifications
Specifications
Manufactured by (HVEE) High Voltage Engineering Europa, The Netherlands.
Terminal voltage : 100 KV - 1.7 MV.
High Currents (after analysing magnet): H+ = 25 micro amps; He+ = 2 micro amps; Heavy Ions = 10-50 micro amps.
Dual Ion Sources : A Duoplasmatron Source and SNICS.
Versatile Switching Magnet : 9 ports (-45deg to +45deg ) : 175 amu-MeV.
90deg Analyzing magnet (for stable Micro beams) : 160 amu-MeV.
State of the art Micro Beam System (manufactured by Oxford Micro beams) for proton beam writing of < 500nm.
Proton Micro-beam facility
Proton Micro-beam facility
At the Ion Microbeam facility, a proton beam, defined by two sets of X-Y slits, one serving as the object aperture (defining the shape) and the other as a collimator aperture (limiting the divergence), is focussed to micrometer size using a set of magnetic quadrupole triplet. Further, the ion beam can be scanned over the sample using an electromagnetic scanner placed before the focussing system.
In 1969 John Cookson and Frank Pilling demonstrated focussing of a proton beam to micrometer size using quadrupole lens system.
Frank Watt and Geoffrey Grime developed the Oxford microprobe system which focused 4MeV proton beam to a spot size of 1 micrometer.
In the 1.7 MV high current tandetron accelerator, the injector part has dual ion sources, Einzel lens for focusing and an analyzing magnet for mass selection. The SNICS source provides light and heavy ion beams of solid targets. The duoplasmatron source extracts high currents of proton and alpha beams from hydrogen and helium gas targets. The high energy side of the accelerator has quadrupole lens for focusing the ion beam, an analyzing magnet and two beam lines for research purpose. The twenty deg. beam line is dedicated for irradiation, implantation and RBS experiments. It is equipped with neutral particle separator and an ion beam scanner for controlled implantation. The chamber is also equipped with the Rutherford backscattering (RBS) setup. The central or the zero deg. beam line is dedicated for proton micro beam writing (PBW) experiments. A new experimental setup has been augumented at the 20 deg beam line with a scattering chamber for ion and electron imaging facility to study ionization and fragmentation of molecular and cluster targets after collision with medium energy heavy ion beams.
Page updated
Google Sites
Report abuse