Title :
Recent developments in high-current superconducting ion linacs
Author :
Delayen, J.R. ; Bohn, C.L. ; Kennedy, W.L. ; Roche, C.T. ; Sagalovsky, L.
Author_Institution :
Argonne Nat. Lab., IL, USA
Abstract :
It is noted that recent experimental and analytical results in the areas of resonator geometry and beam physics are very encouraging for superconducting high-current ion accelerators. Niobium resonators fabricated for high-brightness ion acceleration have yielded continuous-wave (CW) average accelerating gradients as high as 18 MV/m. In a superconducting RFQ (radio-frequency quadrupole) geometry, high CW surface electric fields were sustained over surface areas of order 10 cm/sup 2/. Analyses of cumulative beam breakup in superconducting linacs consisting of decoupled, independently phased cavities were also encouraging. In addition to the construction and testing of a superconducting section, future work will include the development of superconducting cavities operating at higher frequencies and velocities. Fabrication of a 2-gap, 850 MHz, beta /sub 0/=0.28 spoke resonator is nearly complete.<>
Keywords :
cavity resonators; ion accelerators; linear accelerators; niobium; superconducting devices; Nb; accelerating gradients; beam physics; cumulative beam breakup; radio-frequency quadrupole; resonator geometry; superconducting RF cavities; superconducting high-current ion accelerators; superconducting linacs; Acceleration; Geometry; Ion accelerators; Linear accelerators; Niobium; Particle beams; Physics; Radio frequency; Structural beams; Testing;
Conference_Titel :
Particle Accelerator Conference, 1991. Accelerator Science and Technology., Conference Record of the 1991 IEEE
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-0135-8
DOI :
10.1109/PAC.1991.164993
