The long-pulse surface-plasma source prototype is developed at Budker Institute of Nuclear Physics for negative-ion based neutral beam injector use. The essential source features are (1) an active temperature control of the ion-optical system electrodes by circulation of hot thermal fluid through the channels, drilled in the electrode bodies, (2) the concaved transverse magnetic field in the extraction and acceleration gaps, preventing the electrons trapping and avalanching, and (3) the directed cesium deposition via distribution tubes adjacent to the plasma grid periphery. The long term effect of cesium was obtained just with the single cesium deposition. The high voltage strength of ion-optical system electrodes was improved with actively heated electrodes. A stable H(-) beam with a current ∼1 A and energy 90 keV was routinely extracted and accelerated.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1063/1.4932583 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Publisher's Note: "Ion optical design of the magnetic proton recoil neutron spectrometer for the SPARC tokamak" [Rev. Sci. Instrum. 95, 103502 (2024)].
Rev Sci Instrum
November 2024
Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
Ion optical design of the magnetic proton recoil neutron spectrometer for the SPARC tokamak.
Rev Sci Instrum
October 2024
Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
A magnetic proton recoil (MPR) neutron spectrometer is being designed for SPARC, a high magnetic field (BT = 12 T), compact (R0 = 1.85 m, a = 0.57 m) tokamak currently under construction in Devens, MA, USA.
View Article and Find Full Text PDFA compact and portable gamma-ray spectrometer (GRASP) for inertial confinement fusion and basic science experiments.
Rev Sci Instrum
August 2024
Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
A compact and portable gamma-ray spectrometer has been designed to diagnose different components of the inertial confinement fusion-relevant γ-ray spectrum with energies between ∼3.7-17.9 MeV.
View Article and Find Full Text PDFIDSimF: An Open-Source Framework for the Simulation of Molecular Ion Dynamics in Mass Spectrometry and Ion Mobility Spectrometry.
J Am Soc Mass Spectrom
July 2024
Department of Physical and Theoretical Chemistry, University of Wuppertal, Gaussstraße 20, 42119 Wuppertal, Germany.
The development of mass spectrometric and ion mobility devices heavily depends on a comprehensive understanding of the behavior of ions within such systems. Therefore, numerical modeling of ion paths helps to optimize and verify existing devices, and contributes to the development of innovative ion optical systems and multipole geometries. This Article introduces IDSimF (Ion Dynamics Simulation Framework), an open-source simulation tool tailored to the nonrelativistic dynamics of molecular ions in mass and ion mobility spectrometry applications.
View Article and Find Full Text PDFIon Optical Optimization Method for an Ultrahigh Resolution Planar Multireflection Time-of-Flight Mass Analyzer Using the Hill Climbing Algorithm.
J Am Soc Mass Spectrom
March 2024
CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People's Republic of China.
A novel ion optical optimization method for planar multireflection time-of-flight mass spectrometry (MR-TOFMS) is introduced in this paper. The multiparameters of the gridless mirror model, including geometric and voltage parameters, are automatically optimized using a self-made program created in SIMION 8.1.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!