H-/D- projekt
Status
- high intensive internal beam currents of p+, D+
Limitations
- low extraction efficiency of the 4-section deflection electrostatic system (max. 35%, max. external currents ~ 5µA)
Goal
- high intensive external p+, D+ beams (tens of µA)
- possibility of external targets installation (fast neutron generation, liquid and gaseous targets for radioisotopes production)
Solution
- conversion of the U-120M into negative machine H-, D-
- employment of high effective beam extraction by means of the stripping method
- project and realization of a new beam line
New internal PIG ion source with a cold cathode
Effective production both positive and negative ions, material Mo
Optimisation: arc volume geometry, extraction slit dimensions, plasma gap width, gas flow, cathode heat transfer, cathode life time (~ 800hours), H- DC current 2.0 mA
Operation: ~ 200hours, gas: 3He2
Operation: ~ 800hours, gas: H2, D2
Upgrade of the cyclotron vacuum system
Parameters of the cyclotron vacuum system
H- beam transmission for the different combination of diffusion pumps in operation
Stripping method of H-/D- extraction
New beam line
Position 2:
- Targets for production of fast neutrons
- Liquid target H218O, 18O(p,n)18F, PET studies
- Gaseous target, production of 81Rb/81mKr generator
- Gaseous target, production 123I
- Solid state targets for production non-commercial radionuclides 124I, 86Y, 230U
