Electromagnetic simulations of coaxial type HOM coupler

Conference · Sun Jul 10 00:00:00 EDT 2005

OSTI ID:850258

Wu, Genfa; Wang, Haipeng; Rimmer, Robert; Reece, Charles

DESY-type coaxial high order mode (HOM) coupler was used in many superconducting cavities. The electric probe tip is located at the maximum B-field inside the coupler can. For continuous wave (CW) high current application, the heating of this tip can be severe to degrade the cavity performance. Electromagnetic (EM) simulation was done to estimate the tip heating. The geometric remedies and detuning effect were discussed. The effect to HOM external quality factor (Qext) was also estimated due to these remedies. The HOM probe tip heating power was provided for CEBAF 12-GeV cavities and AES injector cavities.

• Research Organization: TJNAF (Thomas Jefferson National Accelerator Facility, Newport News, VA)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-84ER40150
• OSTI ID: 850258
• Report Number(s): JLAB-ACC-05-418; DOE/ER/40150-3591; TRN: US0504366
• Resource Relation: Conference: 12th SRF Workshop, Cornell University, July 10, 2005
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
SUPERCONDUCTING CAVITY RESONATORS
ELECTRIC PROBES
HEATING
PERFORMANCE
QUALITY FACTOR
SIMULATION
ELECTROMAGNETIC TESTING
CEBAF ACCELERATOR