Ion Dynamic Capture Experiments with the High Performance Antiproton Trap (HiPAT)

Details Ion Dynamic Capture Experiments with the High Performance Antiproton Trap (HiPAT) Ion Dynamic Capture Experiments with the High Performance Antiproton Trap (HiPAT)

Jan 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aipc..654..563m&link_type=abstract

SPACE TECHNOLOGY AND APPLICATIONS INT.FORUM-STAIF 2003: Conf.on Thermophysics in Microgravity; Commercial/Civil Next Generation

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Atomic And Molecular Beam Sources And Techniques

Scientific paper

To take the first step towards using the energy produced from the matter-antimatter annihilation for propulsion applications, the NASA Marshall Space Flight Center (MSFC) Propulsion Research Center (PRC) has initiated a research activity examining the storage of low energy antiprotons. The High Performance Antiproton Trap (HiPAT) is an electromagnetic system (Penning-Malmberg design) consisting of a 4 Tesla superconductor, a high voltage electrode confinement system, and an ultra high vacuum test section. It has been designed with an ultimate goal of maintaining 1012 charged particles with a half-life of 18 days. Currently, this system is being evaluated experimentally using normal matter ions that are cheap to produce, relatively easy to handle, and provide a good indication of overall trap behavior (with the exception of assessing annihilation losses). The ions are produced via a positive hydrogen ion source and transported to HiPAT in a beam line equipped with electrostatic optics. The optics serve to both focus and gate the incoming ions, providing microsecond-timed beam pulses that are dynamically captured by cycling the HiPAT forward containment field like a ``trap door''. Initial dynamic capture experiments have been successfully performed with beam energy and currents set to 1.9 kV and 23 μamps, respectively. At these settings up to 2×109 ions have been trapped during a single dynamic cycle.

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