Transfer and test of a 1 MV LTD generator at CEA

Toury, M.; Cartier, F.; Combes, P.; Cartier, Stéphanie; Maisonny, R.; Caron, M.; Etchessahar, B.

doi:10.1109/ppc.2013.6627521

Cited by 4 publications

(3 citation statements)

References 5 publications

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“…LTD cavity with different parameters has been successfully developed around the world [27][28][29][30][31][32][33][34][35][36][37][38][39]. In some applications with ∼100 kA current, for example, x-ray radiography, LTD cavities have been integrated into facilities [27,29,[35][36][37][38]. Test results from these facilities indicated good performance.…”

Section: Introductionmentioning

confidence: 99%

Development of a fusion-oriented pulsed power module

Lin¹,

Zou²,

Zhou³

et al. 2019

Phys. Rev. Accel. Beams

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We present a fusion-oriented pulsed power module M-50, which is based on the linear transformer driver (LTD) and magnetically insulated inductive voltage adder (MIVA) technologies. The module M-50, which consists of 50 identical LTD cavities connected in series, is one of the 60 modules of a fusion-scale pulsed power facility. M-50 is a comprehensive test bed for LTD integration and engineering validation. Each cavity consists of 32 bricks and has an output capability of 90 kV=1.0 MA=120 ns to the matched load. The output power of the 50 cavities is added with a MIVA, whose operation impedance is approximately matched to both source and load. Therefore, it has a nominal output capability of 4.5 MV=1.0 MA=120 ns to 4.5 Ω resistive load. The module is divided into five groups, and each group has ten cavities in series. The inner stalk of the MIVA is divided into five main straight segments. Conical transitions are employed to connect adjacent straight segments. The output end of M-50 is shrunk and connected a ring-cathode diode, whose cathode and anode radii are identical to those of a 12-m-long transmission line in the fusion facility. In this paper, the general concept of the fusion accelerator, the physical design, engineering design and development progress of M-50 are described for the first time.

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Section: Introductionmentioning

confidence: 99%

Development of a fusion-oriented pulsed power module

Lin¹,

Zou²,

Zhou³

et al. 2019

Phys. Rev. Accel. Beams

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“…Linear transformer driver (LTD) technology [1] is very promising for building compact, versatile and high voltage drivers for various applications, including flash x-ray radiography. Several megavolt prototype drivers based on this technology are being developed around the world for this purpose [2][3][4]. An LTD driver is a type of inductive voltage adder (IVA) [5] in which the primary energy storage is located inside the IVA cell.…”

Section: Introductionmentioning

confidence: 99%

Investigating the performances of a 1 MV high pulsed power linear transformer driver: from beam dynamics to x radiation

Maisonny

Ribière

Toury

et al. 2016

Phys. Rev. Accel. Beams

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International audienceThe performance of a 1 MV pulsed high-power linear transformer driver accelerator were extensively investigated based on a numerical approach which utilizes both electromagnetic and Monte Carlo simulations. Particle-in-cell calculations were employed to examine the beam dynamics throughout the magnetically insulated transmission line which governs the coupling between the generator and the electron diode. Based on the information provided by the study of the beam dynamics, and using Monte Carlo methods, the main properties of the resulting x radiation were predicted. Good agreement was found between these simulations and experimental results. This work provides a detailed understanding of mechanisms affecting the performances of this type of high current, high-voltage pulsed accelerator, which are very promising for a growing number of applications

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“…In this diode structure one conical MITL is employed between the MITL end and the diode. This conical MITL with a self-magnetic pinch diode has been tested on a 1.0-MV linear transformer driver (LTD) generator at CEA, GRAMAT [17]. The conical MITL could reduce the required volume in the vicinity of the load compared with the knob and dustbin structure [18].…”

mentioning

confidence: 99%

Current Transmission Efficiency for Conical Magnetically Insulated Transmission Line on a 1.0-MV Linear Transformer Driver System

Guo

Zou

Liu

et al. 2015

IEEE Trans. Plasma Sci.

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Current transmission efficiency in a conical transition magnetically insulated transmission line (MITL) has been studied experimentally on a 1.0-MV linear transformer driver system, which has 10 identical cavities connected in series with MITL. Transmission efficiencies of anode current as high as 98.4% and 93.1% could be achieved when the MITL operates at load-limited and self-limited flows, respectively. As for the cathode current, because of the sufficient length of conical transition MITL, cathode current is also able to sustain high transmission efficiency. But as long as the diode gap is too large, many of the electrons will be launched into the anodecathode gap and the cathode current near the diode drastically decreases. Particle-in-cell simulations were conducted to validate the conclusions. The simulation results agree with experiments.Index Terms-Current transmission efficiency, magnetically insulation, particle-in-cell (PIC) simulation, pulse power systems.

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Transfer and test of a 1 MV LTD generator at CEA

Cited by 4 publications

References 5 publications

Development of a fusion-oriented pulsed power module

Development of a fusion-oriented pulsed power module

Investigating the performances of a 1 MV high pulsed power linear transformer driver: from beam dynamics to x radiation

Current Transmission Efficiency for Conical Magnetically Insulated Transmission Line on a 1.0-MV Linear Transformer Driver System

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