THE SUPERCONDUCTING ELECTRON-CYCLOTRON-RESONANCE 6.4 GHZ HIGH-B MODE AND FREQUENCY SCALING IN ELECTRON-CYCLOTRON-RESONANCE ION SOURCES

We would like to present the initial results and description of the su perconducting electron cyclotron resonance ion source (SCECR) operatin g in the high-B mode-a new high magnetic field, low-frequency mode of operation. First, we describe the operating characteristics of this mo de, which include very high mirror confinement in all directions, yet having a minimum field low enough for electron cyclotron resonance hea ting of 6.4 GHz. The source performance for oxygen, neon, argon, krypt on, and xenon is presented and comparisons are made with several exist ing high-performance ECR sources. In this high-B mode the SCECR matche s or exceeds the performance of all existing ECR sources. These result s perhaps invalidate the classical frequency squared source performanc e scaling law, and suggest the new possibility of high-performance, lo w-frequency (and hence low cost) sources as will be discussed.