TRACKING STUDY OF THE NEW INJECTION BUMP SYSTEM OF THE HLS RING

In this paper, a summary of the existing three-kicker injection bump s ystem of the HLS ring is presented and a new, lattice-independent, fou r-kicker bump system which has been proposed for the second phase proj ect of NSRL is described. Conditions for generating a bump orbit by fo ur kickers an discussed. A theory of multiturn injection based on sing le-particle dynamics is introduced to analyse the conditions to achiev e multiturn injection. Tracking study of the new system are carried ou t to verify the correctness of the scheme. Parameters such as dimensio n of the injected beam phase space ellipse, tolerance of the injected beam energy dispersion, timing jitter allowance of the kickers, etc., are calculated. (C) 1998 Elsevier Science B.V. All rights reserved.