• G Joshi

      Articles written in Pramana – Journal of Physics

    • First on-line test of the LINAC superbuncher at nuclear science centre

      S Ghosh R Mehta P N Prakash A Mandal G K Chaudhari S S K Sonti D S Mathuria K K Mistry A Rai S Rao P Barua A Pandey B K Sahu A Sarkar G Joshi S K Datta R K Bhowmik A Roy

      More Details Abstract Fulltext PDF

      An on-line test of the LINAC superbuncher at Nuclear Science Centre has been successfully performed. DC O7+ beam of nominal energy 92 MeV was accelerated through the superbuncher resonator, operating at a field of 4.54 MV/m. The total energy gain of the beam was measured to be 4.5 MeV. For the pulsed beam test a phase locked bunched beam of O7+ of nominal energy 92 MeV, FWHM 1.3 ns from the pre-tandem multiharmonic buncher was injected into the superbuncher. By properly adjusting the phase and amplitude of the resonator, the best FWHM of the bunched beam was measured to be 185 ps near the entrance of the first LINAC module. Fully depleted cooled surface barrier detector was used for measuring the time width. In a separate experiment the intrinsic time resolution of the same detector was measured to be 134 ps. Consequently the intrinsic time width of the bunched beam, after correcting for the detector resolution, would be 127 ps. Details of the experiment and results are presented.

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