Patent Number: 
Section: claims

1. An apparatus for preventing triple junction breakdown, comprising:a first metal electrode;a second metal electrode;an insulator disposed between the first metal electrode and the second metal electrode, wherein the insulator has at least one surface between the first metal electrode and the second metal electrode that is exposed to a vacuum;a first conductive layer located between the first metal electrode and the insulator, wherein the first conductive layer prevents triple junction breakdown from occurring at an interface of the first electrode, insulator and vacuum; anda second conductive layer located between the second metal electrode and the insulator opposite the first conductive layer, wherein the second conductive layer prevents triple junction breakdown from occurring at an interface of the second electrode, insulator and vacuum. 2. The apparatus according to claim 1, wherein the first and second conductive layers comprise metal particles doped into the insulator. 3. The apparatus according to claim 1, wherein the first and second conductive layers are deposited on the insulator. 4. The apparatus according to claim 1, wherein the first and second conductive layers are bonded onto the insulator. 5. The apparatus according to claim 4, wherein the first and second conductive layers are glued onto the insulator. 6. The apparatus according to claim 1, wherein the first and second conductive layers are joined to the insulator at an atom level without formation of a microscopic gap. 7. The apparatus according to claim 1, further comprises a first O-ring and a second O-ring, wherein the first O-ring is sandwiched between the first conductive layer and the first metal electrode and the second O-ring is sandwiched between the second conductive layer and the second metal electrode. 8. An apparatus for preventing triple junction instability in an ion implanter, comprising:a first metal electrode;a second metal electrode;an insulator disposed between the first metal electrode and the second metal electrode, wherein the insulator has at least one surface between the first metal electrode and the second metal electrode that is exposed to a vacuum that transports an ion beam generated by the ion implanter;a first conductive layer located between the first metal electrode and the insulator, wherein the first conductive layer prevents triple junction breakdown from occurring at an interface of the first electrode, insulator and vacuum; anda second conductive layer located between the second metal electrode and the insulator opposite the first conductive layer, wherein the second conductive layer prevents triple junction breakdown from occurring at an interface of the second electrode, insulator and vacuum. 9. The apparatus according to claim 8, wherein the first and second conductive layers comprise metal particles doped into the insulator. 10. The apparatus according to claim 8, wherein the first and second conductive layers are deposited on the insulator. 11. The apparatus according to claim 8, wherein the first and second conductive layers are bonded onto the insulator. 12. The apparatus according to claim 11, wherein the first and second conductive layers are glued onto the insulator. 13. The apparatus according to claim 8, wherein the first and second conductive layers are joined to the insulator at an atom level without formation of a microscopic gap. 14. The apparatus according to claim 8, further comprises a first O-ring and a second O-ring, wherein the first O-ring is sandwiched between the first conductive layer and the first metal electrode and the second O-ring is sandwiched between the second conductive layer and the second metal electrode. 15. A method for preventing triple junction instability in an ion implanter, comprising:providing a first metal electrode;providing a second metal electrode;disposing an insulator between the first metal electrode and the second metal electrode, wherein the insulator has at least one surface between the first metal electrode and the second metal electrode that is exposed to a vacuum that transports an ion beam generated by the ion implanter;providing a first conductive layer located between the first metal electrode and the insulator, wherein the first conductive layer prevents triple junction breakdown from occurring at an interface of the first electrode, insulator and vacuum; andproviding a second conductive layer located between the second metal electrode and the insulator opposite the first conductive layer, wherein the second conductive layer prevents triple junction breakdown from occurring at an interface of the second electrode, insulator and vacuum. 16. The method according to claim 15, wherein the providing of the first and second conductive layers comprises doping metal particles into the insulator. 17. The method according to claim 15, wherein the providing of the first and second conductive layers comprises depositing the first and second conductive layers on the insulator. 18. The method according to claim 15, wherein the providing of the first and second conductive layers comprises bonding the first and second conductive layers onto the insulator. 19. The method according to claim 18, wherein the bonding comprises gluing the first and second conductive layers onto the insulator. 20. The method according to claim 15, wherein the providing of the first and second conductive layers comprises joining the first and second conductive layers to the insulator at an atom level without formation of a microscopic gap. 21. The method according to claim 15, further comprising providing a first O-ring and a second O-ring, wherein the first O-ring is sandwiched between the first conductive layer and the first metal electrode and the second O-ring is sandwiched between the second conductive layer and the second metal electrode.