Speaker
Mr
Oleg Sotnikov
(Budker Institute of Nuclear Physics)
Description
High-voltage negative-ion based injector is under development at Budker Institute of Nuclear Physics. Negative ion part of the injector is studied at separate test stand and consists of: 1) the long-pulse RF surface-plasma source, 2) low energy beam transport line (LEBT), 3) single aperture 0.5-1 MeV accelerating tube. Deflecting magnets and high speed cryopumps (10^5 l/s), that are installed in LEBT, purify the transported negative ion beam from the co-streaming fluxes of electrons, hydrogen atoms and molecules, and cesium vapor. As a result, the loading on the accelerating tube by harmful co-streaming and secondary particles is considerably reduced. It will enable more stable operation of the negative ion beam accelerator.
Paper presents experimental results on 1 A, 90 keV H- beam production and transport through the LEBT to the multisection calorimeter, installed at distance 3.5 m from the source. The parameters of the transported beam were measured at distance 1.6 m by the movable Faraday cup and at the LEBT exit - by beam calorimeter. The efficiency of beam transport vs various source and LEBT parameters will be presented and discussed.
Primary author
Mr
Oleg Sotnikov
(Budker Institute of Nuclear Physics)
Co-authors
Prof.
Alexander Ivanov
(Budker Institute of Nuclear Physics)
Dr
Andrey Sanin
(Budker Institute of Nuclear Physics)
Dr
Petr Deichuli
(Budker Institute of Nuclear Physics)
Prof.
Yuri Belchenko
(Budker Institute of Nuclear Physics)
