کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10715856 1027380 2010 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
High current cavity design at BNL
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم ابزار دقیق
پیش نمایش صفحه اول مقاله
High current cavity design at BNL
چکیده انگلیسی
In order to meet the requirements of high average current accelerators, such as the Superconducting Proton Linac (SPL) at CERN and the electron-ion collider, (MeRHIC) at BNL, a high current 5-cell Nb superconducting cavity, called BNL3 cavity, was optimized and designed. The optimization process aimed at maximizing the R/Q of the fundamental mode and the geometry factor G under an acceptable RF field level of Bpeak/Eacc or Epeak/Eacc. In addition, a pivotal consideration for the high current accelerators is efficient damping of dangerous Higher-Order Modes (HOM) to avoid inducing emittance degradation, cryogenic loading or Beam-Break-Up (BBU). To transport the HOMs out of the cavity, the BNL3 cavity employs a larger beam pipe, allowing the propagation of HOMs but not the fundamental mode. Moreover, concerning the BBU effect, the BNL3 cavity is aimed at low (R/Q)Qext for dangerous modes, including dipole modes and quadrupole modes. This paper presents the design of the BNL3 cavity, including the optimization for the fundamental mode, and the BBU limitation for dipole and quadrupole modes. The BBU simulation results show that the designed cavity is qualified for high-current, multi-pass machines such as MeRHIC and by-product light source.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 622, Issue 1, 1 October 2010, Pages 17-20
نویسندگان
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