Electrostatic Separator and Mass Separation

摘要

Present performance of KEK electrostatic separator (Mark I) and the results of mass separation test using this separator and described. Maximum voltage of 900 kV was obtained with the 3 m separator and of 800 kV with the 9 m separator across the electrode spacing of 10 cm. Mass separation test using the 9 m separator was attempted at the bubble chamber beam Kl, and mass separation between pion and proton was achieved at the momentum of 3.5 GeV/c and 2 GeV/c. Separation ratio of -- 3.6 between pion and proton was obtained. The relative kaon yields were enriched from -- 1/200 to -- 1/15 at the mass slit when the separator was tuned at the momentum of 3.5 GeV/c. (Atomindex citation 10:455741)