Speaker
Description
The Los Alamos Neutron Science Center uses a beam chopper to create the required beam timing structure of the accelerator by deflecting the unwanted parts of the beam away from the path and into an absorbing target. A pulse modulator system shapes the temporal characteristics of the high voltage pulse that is driven into the chopper structure, enabling synchronization with end-user target systems, which has facilitated successful experimentation for over 40 years. Due to the system’s age, component obsolescence makes the system's long-term operation uncertain. We have initiated an effort to modernize the existing chopper pulse modulator system by implementing technology chosen and developed in the LAMP MEBT chopper project for pulse generation, as well as updating the peripheral components. The upgraded LANSCE chopper modulator will maintain the capability to deliver unique beam patterns to four H- experimental areas and generate 650 V pulses with rise and fall times below 9 ns within a 625 us macropulse. This work describes the preliminary efforts to upgrade components of the chopper modulator system from its present state.
Footnotes
Work was performed under the auspices of the US Department of Energy by Triad National Security, LLC, under contract 89233218CNA000001
Funding Agency
U.S. Department of Energy Contract Number 89233218CNA000001
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