Recent Operation of the FNAL Magnetron H- Ion Source
- Fermilab
This paper will detail changes in the operational paradigm of the Fermi National Accelerator Laboratory (FNAL) magnetron H- ion source due to upgrades in the accelerator system. Prior to November of 2012 the H- ions for High Energy Physics (HEP) experiments were extracted at ~18 keV vertically downward into a 90 degree bending magnet and accelerated through a Cockcroft-Walton accelerating column to 750 keV. Following the upgrade in the fall of 2012 the H- ions are now directly extracted from a magnetron at 35 keV and accelerated to 750 keV by a Radio Frequency Quadrupole (RFQ). This change in extraction energy as well as the orientation of the ion source required not only a redesign of the ion source, but an updated understanding of its operation at these new values. Discussed in detail are the changes to the ion source timing, arc discharge current, hydrogen gas pressure, and cesium delivery system that were needed to maintain consistent operation at >99% uptime for HEP, with an increased ion source lifetime of over 9 months.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1339121
- Report Number(s):
- FERMILAB-CONF-16-351-AD; 1507632
- Resource Relation:
- Conference: 5th International Symposium on Negative Ions, Beams and Sources, Oxford, UK, 09/12-09/16/2016
- Country of Publication:
- United States
- Language:
- English
Similar Records
Commissioning and Operation of the FNAL Front end Injection Line and Ion Sources.
H- Ion Source Development for the FNAL 750keV Injector Upgrade