Multilevel System for Protecting the Cryogenic Target during Its Delivery to the Focus of High-Power Laser Facility at High Repetition Rate

Александрова, И. В.; Koresheva, E. R.; Koshelev, E. L.

doi:10.1134/s1063778819070019

Cited by 2 publications

(4 citation statements)

References 13 publications

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“…The used HTSC-sabot ( 7) is removed from the PMG by a separation coil (not shown in Fig. 17) with a pulsed, repetitively cycled field, and then it is directed to a SCS (8). The target (9) enters a precision system (10) for in-flight tracking its parameters (quality, velocity and trajectory) with a highresolution Fourier holography method [21,22].…”

Section: Below)mentioning

confidence: 99%

“…A cost-effective approach for ICF target supply was proposed at the LPI (see Figure 2). It is based on using free-standing and line-moving targets [5][6][7][8] to develop target fabrication and delivery technologies with an emphasis on repetition systems, which is referred to as the FST approach. Figure 2 uses the following notations: 1 -target, 2 -holder (working with a single target), 3 -a batch of free-standing shells filled with fuel, 4 -shell container (SC), 5 -layering module (LM), 6 -layering channel (LC), 7 -test chamber (TC).…”

Section: Operational Parameters Requirementsmentioning

confidence: 99%

“…A detailed description of the in-line FST production and multiple target protection methods for target delivery at HRR laser facilities, including the results achieved to date (experimental and theoretical), can be found in Refs. [5][6][7][8].…”

Section: Operational Parameters Requirementsmentioning

confidence: 99%

“…In the process, the HTSC-sabot drops its velocity during its deceleration in the magnetic field of coil (6), while the target keeps its velocity moving by inertia (the target is nonmagnetic and it is not affected by the magnetic field). The used HTSC-sabot ( 7) is removed from the PMG by a separation coil (not shown in Figure 17) with a pulsed, repetitively cycled field, and then it is directed to a sabot collection system (SCS) (8). The target (9) enters a precision system (10) for in-flight tracking of its parameters (quality, velocity and trajectory) with a high-resolution Fourier holography method [21,22] .…”

Section: A Next Generation Pmg System Of a Cyclotron Typementioning

confidence: 99%

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A high-pinning-Type-II superconducting maglev for ICF target delivery: main principles, material options and demonstration models

Александрова

Koresheva

Koshelev

2022

High Pow Laser Sci Eng

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Nowadays, the IFE researches related to noncontact positioning and transport of the free-standing cryogenic targets are playing an increasingly important role in this field. The operational principle behind these technologies is the magnetic acceleration of the levitating target carrier (or sabot) made from Type-II, high-temperature superconductors (HTSC). The physics of interaction between levitation, guidance and propulsion systems is based on a quantum levitation of high-pinning HTSCs in the mutually-normal magnetic fields. The paper discusses current target delivery strategies and future perspectives to create different permanent magnet guideway (PMG) systems for IFE target transport with levitation. Particularly, several PMG building options for optimizing both suspension and levitation of IFE targets using an HTSC-sabot will be analyzed. Credible solutions have been demonstrated for both linear and/or round PMGs, including ones with a cyclotron acceleration process to realize high-running velocities of the HTSC-sabot for a limited magnetic track. Focusing on physics, we describe in detail the main aspects of the PMGs building and the results obtained from computations and prove of principle (POP) experiments. High-pinning HTSC magnetic levitation (maglev) promises a stable and self-controlled levitation to accelerate the IFE targets placed in the HTSC-sabots up to the required injection velocities 200 m/s and beyond.

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Section: Below)mentioning

confidence: 99%

Section: Operational Parameters Requirementsmentioning

confidence: 99%

Section: Operational Parameters Requirementsmentioning

confidence: 99%

Section: A Next Generation Pmg System Of a Cyclotron Typementioning

confidence: 99%

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A high-pinning-Type-II superconducting maglev for ICF target delivery: main principles, material options and demonstration models

Александрова

Koresheva

Koshelev

2022

High Pow Laser Sci Eng

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Analyzing and relieving the thermal issues caused by fabrication details of a deuterium cryogenic target

Hong

Gao

Jiang

et al. 2021

Matter and Radiation at Extremes

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In inertial confinement fusion experiments, fuel quality is determined mainly by the thermal environment of the capsule in the layering procedure. Owing to the absence of a radial thermal gradient, formed deuterium–deuterium (DD) ice shells in the capsule are thermally instable. To obtain a solid DD layer with good quality and long lifetime, stringent demands must be placed on the thermal performance of cryogenic targets. In DD cryogenic target preparation, two issues arise, even after the capsule’s temperature uniformity has been improved by the use of thick aluminized films. The first is the inconsistent ice shape, which is related to the capsule’s thermal field. In this article, some typical fabrication details are investigated, including adhesive penetration during assembly, the presence of the fill tube, the optical properties of the hohlraum and film surfaces, the jacket–hohlraum connection, deviations in capsule location, and asymmetrical contact at the arm–jacket interfaces. Detailed comparisons of the thermal effects of these factors provide guidance for target optimization. The second issue is the instability of seeding crystals in the fill tube due to unsteadiness of the direction of the thermal gradient in the fill tube assembly. An additional thermal controller is proposed, analyzed, and optimized to provide robust controllability of tube temperature. The analysis results and optimization methods presented in this article should not only help in dealing with thermal issues associated with DD cryogenic targets, but also provide important references for engineering design of other cryogenic targets.

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Multilevel System for Protecting the Cryogenic Target during Its Delivery to the Focus of High-Power Laser Facility at High Repetition Rate

Cited by 2 publications

References 13 publications

A high-pinning-Type-II superconducting maglev for ICF target delivery: main principles, material options and demonstration models

A high-pinning-Type-II superconducting maglev for ICF target delivery: main principles, material options and demonstration models

Analyzing and relieving the thermal issues caused by fabrication details of a deuterium cryogenic target

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