Concept Design of a New Structure of 1.3GHz Single-Cell Superconducting Cavity

  • This paper reported a new shape of practicing single-cell superconducting cavities. It consist of the two half end-cell of 9-cell Beijing TESLA shape accelerating cavity. The ratio of the maximal surface electric field to accelerating gradient,Ep/Eacc,of the π-mode of the 9-cell cavity is reduced to 2.024. The cell -to-cell coupling k is high to 1.95%. The Ep/Eacc in the single-cell cavities is reduced to 1.8.The monopole, dipole and quadrupole high-ordermodes, HOM, was calculated with resistance-band model using URMEL-T. In addition, the concept of the structure parameters of niobium cavity was introduced as well as the condition of calculation reliability with codes, URMEL and URMEL-T, was discussed.
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  • [1] V.Lagomarsino iet al/i,IEEE Trans Mag-15(1979)25.[2] P.Kneisel iet al/i,NIM,188(1981)669.[3] C.Lyneis iet al/i,Appl.iPhys/i.iLett/i,31(1977)541.[4] H.Padamsee,A.Joshi,JAppl iPhys/iics,50(1979)1112.[5] D.L.Rubin,Linear Collider Applications of Superconducting RF,thelst TESLA Workshop,23-26July 1990,Cornell UnivUSA.[6] H.Padamseeetal.SuperconductingRFActivitiesatCornellUniversity,Proc.of the 3rd Workshopon RF Supercon ductivity,Argonne,Illinois(1988),USA.[7] R.M Sundelin,IEEE Transon Nuclear Science,NS-32(1985)3570.[8] Q.S.Shu iet al/i,Reducing Feild Emissionin Superconducting RF Cavities for the Next Generation of Particle Accelerators,CLNS 90/1020,Cornell Univ,(1990),USA.[9] J.Graberetal,A Would Record Accelrating Gradientina Niobium Superconducting Accelerator Cavity,Proc.of the 1993 IEEEPAC,Wash.DC,p892(1993)[10] TWeil and,NIM.216(1983)329.[11] U.Laustroer,Uvan Riencn,T.Weil and,DESYM-87-03(1987),Germany.[12] Donglin Zu,Jia-erh Chen,Proc.of the 1993IEEEPAC.Wash.DC,p1095(1993).[13] K.Halbach,R.F.Holsinger,Part Accel,7(1976)213.[14] Donglin Zu,Summary of URMEL(T)calculationson Crab Cavity, CLNS 91-1090, CU, USA.[15] H. Padarnsee iet al/i, Superconducting RF Accelerating and Crab Cavities for the Cornell B-Factory,CESR-B, CLNS90-1039, internal report of laboratory of iNucl/iear Studies, CU, USA.[16] H. Padamsee iet al/i, Crab Cavity Development for the Cornell B-Factory, CESR-B, PAC. San Francisco.1991.[17] T. Weiland, IEEE Trans. iNucl/i. Sci. NS-32 (1985) 2738.
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Zu Donglin. Concept Design of a New Structure of 1.3GHz Single-Cell Superconducting Cavity[J]. Chinese Physics C, 1996, 20(11): 1041-1052.
Zu Donglin. Concept Design of a New Structure of 1.3GHz Single-Cell Superconducting Cavity[J]. Chinese Physics C, 1996, 20(11): 1041-1052. shu
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Received: 1900-01-01
Revised: 1900-01-01
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Concept Design of a New Structure of 1.3GHz Single-Cell Superconducting Cavity

    Corresponding author: Zu Donglin,
  • Institute of Heavy Ion Physics, Beijing University, Beijing 100871

Abstract: This paper reported a new shape of practicing single-cell superconducting cavities. It consist of the two half end-cell of 9-cell Beijing TESLA shape accelerating cavity. The ratio of the maximal surface electric field to accelerating gradient,Ep/Eacc,of the π-mode of the 9-cell cavity is reduced to 2.024. The cell -to-cell coupling k is high to 1.95%. The Ep/Eacc in the single-cell cavities is reduced to 1.8.The monopole, dipole and quadrupole high-ordermodes, HOM, was calculated with resistance-band model using URMEL-T. In addition, the concept of the structure parameters of niobium cavity was introduced as well as the condition of calculation reliability with codes, URMEL and URMEL-T, was discussed.

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