Chip Piller Contact PILLER@ORNL.GOV All Publications H− Ion Source RF Plasma Testing with 13 MHz and 27 MHz at the Spallation Neutron Source (SNS) Recent H- ion source research and development at the 91°µÍø H− ion source research and development at the 91°µÍø Final Design Report Proton Power Upgrade Project Installation and commissioning of the ion source systems for the new spallation neutron source 2.5 MeV injector Status of the new SNS injector and external antenna ion source A New 2.5 MeV Injector and Beam Test Facility for the Spallation Neutron Source Characterization of the CW starter plasma RF matching network for operating the SNS H- ion source with lower H2 flows Recent Performance of and Plasma Outage Studies with the SNS H- Source... The status of the SNS external antenna ion source and spare RFQ test facility Recent Performance and Ignition Tests of the pulsed SNS H- Source for 1-MW Neutron Production A look ahead: Status of the SNS external antenna ion source and the new RFQ test stand Ion extraction from a saddle antenna RF surface plasma source Recent Performance of the SNS H- ion source and low-energy beam transport system... Improvements to the internal and external antenna H− ion sources at the Spallation Neutron Source Producing Persistent, High-Current, High-Duty-Factor H- Beams for Routine 1 MW Operation of SNS... Performance of the H- Ion Source Supporting 1-MW Beam Operations at SNS STATUS OF THE OAK RIDGE SPALLATION NEUTRON SOURCE (SNS) RF SYSTEMS * BROADBAND ANTENNA MATCHING NETWORK DESIGN AND APPLICATION FOR RF PLASMA ION SOURCE... Spallation Neutron Source LLRF Temperature Dependence and Solution... rf improvements for Spallation Neutron Source H-ion source SIMULATION STUDY AND INITIAL TEST OF THESNS RING RF SYSTEM Key Links