TITLE

Measurement of the high energy component of the x-ray spectra in the VENUS electron cyclotron resonance ion source

AUTHOR(S)
Leitner, D.; Benitez, J. Y.; Lyneis, C. M.; Todd, D. S.; Ropponen, T.; Ropponen, J.; Koivisto, H.; Gammino, S.
PUB. DATE
March 2008
SOURCE
Review of Scientific Instruments;Mar2008, Vol. 79 Issue 3, p033302
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
High performance electron cyclotron resonance (ECR) ion sources, such as VENUS (Versatile ECR for NUclear Science), produce large amounts of x-rays. By studying their energy spectra, conclusions can be drawn about the electron heating process and the electron confinement. In addition, the bremsstrahlung from the plasma chamber is partly absorbed by the cold mass of the superconducting magnet, adding an extra heat load to the cryostat. Germanium or NaI detectors are generally used for x-ray measurements. Due to the high x-ray flux from the source, the experimental setup to measure bremsstrahlung spectra from ECR ion sources is somewhat different from that for the traditional nuclear physics measurements these detectors are generally used for. In particular, the collimation and background shielding can be problematic. In this paper, we will discuss the experimental setup for such a measurement, the energy calibration and background reduction, the shielding of the detector, and collimation of the x-ray flux. We will present x-ray energy spectra and cryostat heating rates depending on various ion source parameters, such as confinement fields, minimum B-field, rf power, and heating frequency.
ACCESSION #
31546634

 

Related Articles

  • Design and fabrication of a superconducting magnet for an 18 GHz electron cyclotron resonance ion/photon source NFRI-ECRIPS. You, H.-J.; Jang, S.-W.; Jung, Y.-H.; Lho, T.-H.; Lee, S.-J. // Review of Scientific Instruments;Feb2012, Vol. 83 Issue 2, p02A326 

    A superconducting magnet was designed and fabricated for an 18 GHz ECR ion/photon source, which will be installed at National Fusion Research Institute (NFRI) in South Korea. The magnetic system consists of a set of four superconducting coils for axial mirror field and 36 pieces of permanent...

  • Performances of Volume Versus Surface ECR Ion Sources. Liu, Y.; Alton, G. D.; Bilheux, H. Z.; Meyer, F. M. // AIP Conference Proceedings;2005, Vol. 749 Issue 1, p191 

    An all-permanent, 6 GHz ECR ion source has been constructed at the Holifield Radioactive Ion Beam Facility (HRIBF), Oak Ridge National Laboratory (ORNL), that permits configuration of the central magnetic field in either conventional parabolic or flat minimum-B profiles. The magnitude of the...

  • Progress on precision measurements of inner shell transitions in highly charged ions at an ECR ion source. Szabo, Csilla I.; Indelicato, Paul; LeBigot, Eric-Olivier; Vallette, Alexandre; Amaro, Pedro; Guerra, Mauro; Gumberidze, Alex // AIP Conference Proceedings;5/25/2012, Vol. 1438 Issue 1, p236 

    Inner shell transitions of highly charged ions produced in the plasma of an Electron Cyclotron Resonance Ion Source (ECRIS) [1] were observed the first time by a Double Crystal Spectrometer (DCS). The DCS is a well-used tool in precision x-ray spectroscopy due to its ability of precision...

  • Measurement of the high energy component of the x-ray spectra in the VENUS electron cyclotron resonance ion source (abstract only). Leitner, D.; Benitez, J. Y.; Lyneis, C. M.; Todd, D. S.; Ropponen, T.; Ropponen, J.; Koivisto, H.; Gammino, S. // Review of Scientific Instruments;Feb2008, Vol. 79 Issue 2, p02A325 

    High performance electron cyclotron resonance (ECR) ion sources, such as VENUS (versatile ECR for nuclear science), produce large amounts of x rays. By studying their energy spectra, conclusions can be drawn about the electron heating process and the electron confinement. In addition, the...

  • The third generation superconducting 28 GHz electron cyclotron resonance ion source VENUS (invited). Lyneis, C.; Leitner, D.; Leitner, M.; Taylor, C.; Abbott, S. // Review of Scientific Instruments;Feb2010, Vol. 81 Issue 2, p02A201 

    VENUS is a third generation electron cyclotron resonance (ECR) ion source, which incorporates a high field superconducting NbTi magnet structure, a 28 GHz gryotron microwave source and a state of the art closed cycle cryosystem. During the decade from initial concept to regular operation, it has...

  • Manufacturing of a superconducting magnet system for 28 GHz electron cyclotron resonance ion source at KBSI. Lee, B. S.; Choi, S.; Yoon, J. H.; Park, J. Y.; Won, M. S. // Review of Scientific Instruments;Feb2012, Vol. 83 Issue 2, p02A347 

    A magnet system for a 28 GHz electron cyclotron resonance ion source is being developed by the Korea Basic Science Institute. The configuration of the magnet system consists of 3 solenoid coils for a mirror magnetic field and 6 racetrack coils for a hexapole magnetic field. They can generate...

  • The preliminary tests of the superconducting electron cyclotron resonance ion source DECRIS-SC2. Efremov, A.; Bekhterev, V.; Bogomolov, S.; Drobin, V.; Loginov, V.; Lebedev, A.; Yazvitsky, N.; Yakovlev, B. // Review of Scientific Instruments;Feb2012, Vol. 83 Issue 2, p02A334 

    A new compact version of the 'liquid He-free' superconducting ECR ion source, to be used as an injector of highly charged heavy ions for the MC-400 cyclotron, is designed and built at the Flerov Laboratory of Nuclear Reactions in collaboration with the Laboratory of High Energy Physics of JINR....

  • Design and investigations of the superconducting magnet system for the multipurpose superconducting electron cyclotron resonance ion source. Tinschert, K.; Lang, R.; Mäder, J.; Roßbach, J.; Spädtke, P.; Komorowski, P.; Meyer-Reumers, M.; Krischel, D.; Fischer, B.; Ciavola, G.; Gammino, S.; Celona, L. // Review of Scientific Instruments;Feb2012, Vol. 83 Issue 2, p02A319 

    The production of intense beams of heavy ions with electron cyclotron resonance ion sources (ECRIS) is an important request at many accelerators. According to the ECR condition and considering semi-empirical scaling laws, it is essential to increase the microwave frequency together with the...

  • A new structure of superconducting magnetic system for 50 GHz operations (invited). Xie, D. Z. // Review of Scientific Instruments;Feb2012, Vol. 83 Issue 2, p02A302 

    High field and high frequency have been leading the development of electron cyclotron resonance ion sources (ECRISs) in the past decade as demonstrated by the achieved great performance. The present superconducting magnet structures built with NbTi wires have reached an axial field of 3.5-4.0 T...

Share

Read the Article

Courtesy of

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics