TITLE

Proton ring trapping in a gated magnetic mirror

AUTHOR(S)
Pedrow, P. D.; Greenly, J. B.; Hammer, D. A.; Sudan, R. N.
PUB. DATE
August 1985
SOURCE
Applied Physics Letters;8/1/1985, Vol. 47 Issue 3, p225
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
An axis-encircling proton ring has been trapped for times (≈ 4 µs) much longer than the ion cyclotron period (≈ 80 ns). The rings, with mean radius 10 cm and with particle energies ≤430 keV, made eight passes through the 1.5-m-long magnetic mirror well with static and puffed hydrogen used for space-charge neutralization. The measured proton inventory was typically 2 × 10[sup 15] protons during the first pass and 2 × 10[sup 13] protons during the eighth and final pass. With a central solenoidal field of 0.8 T, the peak diamagnetism and azimuthal current density of the injected ring were typicality 10 mT (100 G) and 10 A/cm², respectively.
ACCESSION #
9817954

 

Related Articles

  • C235-V3 cyclotron for a proton therapy center to be installed in the hospital complex of radiation medicine (Dimitrovgrad). Galkin, R.; Gurskii, S.; Jongen, Y.; Karamysheva, G.; Kazarinov, M.; Korovkin, S.; Kostromin, S.; Calderan, J.; Cahay, P.; Mokrenko, S.; Morozov, N.; Nkongolo, H.; Ol'shevskii, A.; Paradis, Y.; Petrov, D.; Romanov, V.; Samsonov, E.; Syresin, E.; Shakun, A.; Shakun, N. // Technical Physics;Jun2014, Vol. 59 Issue 6, p917 

    Proton therapy is an effective method of treating oncologic diseases. In Russia, construction of several centers for proton and ion therapy is slated for the years to come. A proton therapy center in Dimitrovgrad will be the first. The Joint Institute for Nuclear Research (Russia) in...

  • RF Stabilization for Storage of Antiprotons. Pearson, J. Boise; Lewis, Raymond A. // AIP Conference Proceedings;2005, Vol. 746 Issue 1, p552 

    Portable storage of antimatter is an important step in the experimental exploration of antimatter in propulsion applications. The High Performance Antiproton Trap (HiPAT) at NASA Marshall Space Flight Center is a Penning-Malmberg ion trap being developed to trap and store low energy antiprotons...

  • Multi-stage, high-gradient, cyclotron resonance proton accelerator concept. Hirshfield, J. L.; Wang, Changbiao; Symons, Robert // AIP Conference Proceedings;2001, Vol. 569 Issue 1, p833 

    Simulations are presented that show the possibility of high-gradient, high-efficiency cyclotron-resonance acceleration of protons that drift through a cascade of cavities in a uniform axial magnetic field. Means to maintain phase synchronism with a pulsed proton beam are discussed, with...

  • Design of a compact, permanent magnet electron cyclotron resonance ion source for proton and H2+ beam production. Xianlu Jia; Tianjue Zhang; Shan Luo; Chuan Wang; Xia Zheng; Zhiguo Yin; Junqing Zhong; Longcheng Wu; Jiuchang Qin // Review of Scientific Instruments;Feb2010, Vol. 81 Issue 2, p02A321 

    A 2.45 GHz microwave ion source was developed at China Institute of Atomic Energy (CIAE) for proton beam production of over 60 mA [B.-Q. Cui, Y.-W. Bao, L.-Q. Li, W.-S. Jiang, and R.-W. Wang, Proceedings of the High Current Electron Cyclotron Resonance (ECR) Ion Source for Proton Accelerator,...

  • Development of a compact filament-discharge multi-cusp H- ion source. Jia, XianLu; Zhang, TianJue; Zheng, Xia; Qin, JiuChang // Review of Scientific Instruments;Feb2012, Vol. 83 Issue 2, p02A730 

    A 14 MeV medical cyclotron with the external ion source has been designed and is being constructed at China Institute of Atomic Energy. The H- ion will be accelerated by this machine and the proton beam will be extracted by carbon strippers in dual opposite direction. The compact multi-cusp H-...

  • Status of a compact electron cyclotron resonance ion source for National Institute of Radiological Sciences-930 cyclotron. Hojo, S.; Katagiri, K.; Nakao, M.; Sugiura, A.; Muramatsu, M.; Noda, A.; Okada, T.; Takahashi, Y.; Komiyama, A.; Honma, T.; Noda, and K. // Review of Scientific Instruments;2014, Vol. 85 Issue 2, p1 

    The Kei-source is a compact electron cyclotron resonance ion source using only permanent magnets and a frequency of 10 GHz. It was developed at the National Institute of Radiological Sciences (NIRS) for producing C4+ ions oriented for high-energy carbon therapy. It has also been used as an ion...

  • Study of the radioactivity induced in air by a 15-MeV proton beam. Braccini, S.; Ereditato, A.; Nesteruk, K. P.; Scampoli, P.; Zihlmann, K. // Radiation Protection Dosimetry;Feb2015, Vol. 163 Issue 3, p269 

    Radioactivity induced by a 15-MeV proton beam extracted into air was studied at the beam transport line of the 18-MeV cyclotron at the Bern University Hospital (Inselspital). The produced radioactivity was calculated and measured by means of proportional counters located at the main exhaust of...

  • Coarse-graining and nonlocal processes in proton cyclotron resonant interactions. Siregar, E.; Vinas, A.F. // Physics of Plasmas;Feb2001, Vol. 5 Issue 2, p333 

    Demonstrates the capture of proton cyclotron resonant interactions for parallel propagation through coarse-grained information from hybrid simulation. Use of direct kinetic information; Procedures in coarse-graining; Comparison between the kinetic data and a model based on quasilinear theory.

  • Surveillance protection of a 150 kW proton beam dump. Rezzonico, Luigi; Do¨lling, Rudolf // AIP Conference Proceedings;2000, Vol. 546 Issue 1, p555 

    The 72 MeV beam dump of the PSI Injector 2 cyclotron was replaced in the 1999 shut-down. It has since been operated with currents up to 2 mA and a beam power density up to 300 W/mm². The beam is stopped at the trumpet-shaped inner surface of six successive water cooled copper blocks....

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

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

Try another library?
Sign out of this library

Other Topics