Title of article :
A theory of the beam loss-induced vacuum instability applied to the heavy-ion synchrotron SIS18
Author/Authors :
Mustafin، نويسنده , , E. and Boine-Frankenheim، نويسنده , , O. and Hofmann، نويسنده , , I. and Reich-Sprenger، نويسنده , , H. and Spiller، نويسنده , , P.، نويسنده ,
Abstract :
A theoretical model to describe the vacuum instability induced by the lost particles in heavy-ion accelerators is proposed and applied to the U+28 beam lifetime measurements in the SIS18 at GSI, where the instability is of concern for high-intensity operation. The method allows to derive values of the desorption yield, the charge-exchange cross-section and the total pumping speed from the measurements of the beam lifetime I(t). The obtained desorption yields are comparable with those found in the other heavy-ion machines. Directions of possible cures are discussed.
Keywords :
Vacuum instability , Heavy-ion accelerators , Heavy-ion beam lifetime , Heavy-ion beam-induced desorption , Heavy-ion storage rings
Journal title :
Astroparticle Physics
