Beam lifetime and emittance growth in RHIC under normal operating conditions with the hydrogen gas jet, the cluster-jet and pellet targets

Trbojevic, D.

关键词: CAPTURE;    CROSS SECTIONS;    ELECTRONS;    HYDROGEN;    INELASTIC SCATTERING;    LIFETIME;    PELLETS;    TARGETS relativistic heavy ion collider;   

DOI  :  10.2172/990261
RP-ID  :  BNL--94010-2010-IR
PID  :  OSTI ID: 990261
Others  :  R&D Project: KBCH139
Others  :  18031
Others  :  Other: KB0202011
Others  :  TRN: US1007370

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来源: SciTech Connect

【 摘 要 】

The inelastic scattering of the beam and the residual gas molecules in RHIC could represent one of the limitations on the beam life time and emittance growth. This report covers the dominant central nuclear collisions influence on the beam lifetime and transverse emittance growth. The cross sections for the beam-gas electron radiative captures are an order of magnitude smaller. The capture cross sections include the radiative and non-radiative capture, and the capture from the electron-positron pair creation from the 'vacuum capture'.