Tangential compact torus injection into STOR-M

Xiao, C.; Hirose, Akira; Zawalski, Wade; White, D. R.; Raman, R.; Decoste, R.; Gregory, B.C.; Martín, F.

doi:10.1109/plasma.1996.550736

Cited by 2 publications

(4 citation statements)

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“…The compact toroid injector, a coaxial plasma accelerator, shown in Figure 1.5, has the potential to efficiently fuel a tokamak by injecting plasma directly into the reactor center [12,14,15] and is showing promise. Active research has been carried out in Canada, both at the University of Saskatchewan [16,17] and at the former Tokamak de Varrennes (TdeV) [18,19] as well as at UC Davis [20,21], and the University of Hyogo [22,23].…”

Section: Nuclear Fusion and The Tokamak Reactormentioning

confidence: 99%

“…Early work involved the study of tangential injection [17], improving the fueling parameters by allowing for a larger CT-tokamak plasma interaction volume. Since then, it has been used for multiple experiments, including the study of vertical injection [12,30], meant to sidestep the CT from being repelled from the tokamak toroidal field gradient, as well as improved confinement modes [26].…”

Section: Nuclear Fusion and The Tokamak Reactormentioning

confidence: 99%

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Repetitive operation of the University of Saskatchewan Compact Torus Injector

Pant

Hirose

Xiao

2010

Radiation Effects and Defects in Solids

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Development of fueling technologies for modern and future tokamak reactors is essential for their implementation in a commercial energy production setting. Compared to the presently available fueling technologies, gas or cryogenic pellet injection, compact torus injection presents an effective and efficient method for directly fueling the central core of tokamak plasmas. Fueling of the central core of a tokamak plasma is pivotal for providing efficient energy production. The central core plasma of a reactor contains the greatest density of fusion processes. For consistent and continuous fueling of tokamak fusion reactors, compact torus injectors must be operated in a repetitive mode.The goal of this thesis was to study the feasibility of firing the University of Saskatchewan Compact Torus Injector (USCTI) in a repetitive mode. In order to enable USCTI to fire repetitively, modifications were made to its electrical system, control system and data acquisition system. These consisted primarily of the addition of new power supplies, to enable fast charging of the many capacitor banks used to form and accelerate the plasma. The maximum firing rate achieved on USCTI was 0.33 Hz, an increase from the previous maximum firing rate of 0.2 Hz achieved at UC Davis.Firing USCTI in repetitive modes has been successful. It has been shown that the CTs produced in any given repetitive series are properly formed and repeatable. This is made evident through analysis of data collected from the CTs' magnetic fields and densities as they traveled along the injector barrel. The shots from each experiment were compared to the series' mean data and were shown to be consistent over time.Calculations of their correlations show that there are only minimal deviations from shot to shot in any given series.ii

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Section: Nuclear Fusion and The Tokamak Reactormentioning

confidence: 99%

Section: Nuclear Fusion and The Tokamak Reactormentioning

confidence: 99%

Repetitive operation of the University of Saskatchewan Compact Torus Injector

Pant

Hirose

Xiao

2010

Radiation Effects and Defects in Solids

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“…The CS model was developed further by Newcomb [8], who developed a more accurate model for the MHD wave drag. Xiao et al [9] refined the work of Bozhokin and used the corrected (Newcomb) drag term, and also were the first to simulate vertical (as opposed to radial) injection [10]. All these models had three degrees of freedom, considering the motion of the CT in a twodimensional plane and the rotation of its dipole about a single fixed axis.…”

Section: The Conducting Sphere (Cs) Modelmentioning

confidence: 99%

“…More recently, UC Davis investigated the CT acceleration process, without injection into a tokamak, in the Compact Toroid Injection Experiment (CTIX) [20]. An investigation of the effect of the injection angle was completed using the University of Saskatchewan Compact Torus Injector (USCTI) firing ∼1 µg CTs at 120 km s −1 into the STOR-M tokamak [10]. The US Department of Defense has carried out the largest CT experiment ever conducted, entitled MARAUDER [21].…”

Section: Experimental Workmentioning

confidence: 99%

Development of a compact toroid fuelling system for ITER

Olynyk¹,

Morelli

2008

Nucl. Fusion

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A review of literature relevant to compact toroid (CT) injection is presented. A design is then developed for a repetitive-fire CT injection fuelling system for the ITER (2001) tokamak. Advantages of central over edge fuelling include plasma density control and higher deposition rates, implying lower tritium usage. The reference design offers 50 Pa m3 s−1 of 90%T/10%D fuelling. 1.29 mg CTs are injected at a rate of 50 Hz (in order to synchronize with the European power grid) and a speed of 300 km s−1. A new six-degree-of-freedom model of CT trajectory in the tokamak is developed and applied to the proposed injector design. The fueller is intended to work in parallel with the 400 Pa m3 s−1 edge gas puffing system and to replace the centrifuge pellet-injection system in the ITER (2001) reference design. Each injected CT adds only 0.68% to the plasma inventory, implying that the injection process will be non-disruptive. Power consumption will be approximately 15 MWe. The strengths of the design compared with the current pellet-injection system are highlighted.

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Tangential compact torus injection into STOR-M

Cited by 2 publications

References 0 publications

Repetitive operation of the University of Saskatchewan Compact Torus Injector

Repetitive operation of the University of Saskatchewan Compact Torus Injector

Development of a compact toroid fuelling system for ITER

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