Speaker
Description
At LANSCE, we are developing a new technique for measuring our H- beam energy by examining the decay photon spectrum distribution following neutralization. The photons emitted during the decay have well-known discrete energies. Therefore, the Doppler shift of their wavelength reveals the speed of the particles they came from, which allows for the precise calculation of beam energy. This method will improve the energy accuracy by two orders of magnitude, greatly enhancing studies dependent on particle time-of-flight and medical treatments dependent on precise energy disposition. Many DOE-supported and international facilities use H- beams, including LANSCE, Spallation Neutron Source (SNS) at ORNL, TRIUMF Cyclotron, ISIS Neutron Source, and Linac4 at CERN. LANSCE currently uses H- beam for four of its five experimental areas. Additionally, the Isotope Production Facility at LANSCE is considering switching from H+ to H- beam with the upcoming front-end upgrade for various reasons, including the possible use of this improved energy diagnostic.
