Tests of compressed geometry NEC acceleration tubes

Conference · Mon Dec 31 23:00:00 EST 1984

OSTI ID:5411035

Raatz, J E; Rathmell, R D; Stelson, P H; Ziegler, N F

Tests have been performed in the 3 MV Pelletron test machine at NEC on a compressed geometry tube which increases the insulating length of the tube by eliminating the heated electrode assemblies (approx.2.5 cm thick) at the end of each tube section. Some insert electrodes are changed to provide some trapping of secondary ions. The geometry tested provided an 18% increase in live ceramic in the tube. The compressed geometry tube allowed a terminal voltage of 3.55 MV on the 3 MV column at normal gradients of 30.3 kv/tube gap. The tube was also conditioned to more than 4 MV and remained stable in voltage with few sparks and with low x-ray levels for days at about 4 MV. This same performance could be achieved with or without arc discharge cleaning. 4 refs., 4 figs.

• Research Organization: National Electrostatics Corp., Middleton, WI (USA); Oak Ridge National Lab., TN (USA)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 5411035
• Report Number(s): CONF-850470-9; ON: DE85016392
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430100* -- Particle Accelerators-- Design
Development
& Operation
ACCELERATORS
BEAM OPTICS
ELECTRIC POTENTIAL
ELECTRODES
ELECTROSTATIC ACCELERATORS
ENERGY RANGE
MEV RANGE
MEV RANGE 01-10
PELLETRON ACCELERATORS
PERFORMANCE