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Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh
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Development of highly efficient NEG pumping system for EBIS.

S Kondrashev1, E Beebe1, B Coe1

  • 1Brookhaven National Laboratory, Upton, New York 11973, USA.

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|November 30, 2019
PubMed
Summary
This summary is machine-generated.

A new compact pumping system using ZAO Non-Evaporable Getter (NEG) modules achieves high pumping speeds for electron beam ion sources. This system is essential for maintaining ultrahigh vacuum in advanced ion trap operations.

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Area of Science:

  • Vacuum technology
  • Particle accelerators
  • Atomic physics

Background:

  • Stable operation of Electron Beam Ion Sources (EBIS) requires ultrahigh vacuum.
  • Existing pumping systems may have limitations in space or performance within confined accelerator environments.

Purpose of the Study:

  • To develop and test a compact linear pumping system for EBIS applications.
  • To enhance pumping speed and sorption capacity for active gases within the ion trap volume.

Main Methods:

  • Utilized ZAO Non-Evaporable Getter (NEG) modules in a linear configuration.
  • Designed for minimal transverse dimensions to fit within superconducting solenoid bores.
  • Employed external DC current (100 A) for NEG activation/reactivation at 650 °C.

Main Results:

  • Achieved a pumping speed of approximately 1000 l/s for active gases in the target area.
  • Demonstrated suitability for mounting adjacent to the ion trap.
  • Validated activation and reactivation procedures for the NEG system.

Conclusions:

  • The developed compact NEG pumping system meets the stringent vacuum requirements for EBIS.
  • This technology is a viable solution for the Extended EBIS Upgrade at BNL.
  • The system offers high performance in a minimal footprint for advanced accelerator applications.