Energy upgrade as regards quench performance

MacKay, W.W. ; Tepikian, S.

关键词: CONFIGURATION;    CROSS SECTIONS;    DIPOLES;    MAGNETS;    OPTICS;    PERFORMANCE;    PRODUCTION;    PROTONS;    TRAINING relativistic heavy ion collider;   

DOI  :  10.2172/1007887
RP-ID  :  BNL--94637-2011-IR
PID  :  OSTI ID: 1007887
Others  :  R&D Project: KBCH139
Others  :  18031
Others  :  Other: KB0202011
Others  :  TRN: US1101797

学科分类：核物理和高能物理

美国|英语

来源: SciTech Connect

【 摘 要 】

Since the cross section for W production increases rapidly with energy, we consider the possibility of increasing the collision energy of polarized protons at RHIC. The limits of present hardware are examined with a particular emphasis on the quench training performance of magnets. Ignoring the limits of the DX magnets, the short-sample currents for the main arc (8 cm) dipoles could allow an increase of more than 30%, however we estimate 400 to 500 training quenches for the just 8 cm dipoles to reach this level. We propose that a 10% increase in energy might be achieved with the present hardware configuration. Raising the beam energy to 275 GeV ({radical}s = 550 GeV) should increase the W production rate by almost 50% from the 250 GeV level for the same optics with identical {beta}*'s at the collision points.