Bolometers for Fusion Plasma Diagnostics

Tahiliani, Kumudni; Jha, Ratneshwar

doi:10.5772/33466

Cited by 1 publication

(1 citation statement)

References 37 publications

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“…The requirements for bolometers are demanding and include: 31 1. small area (<10 mm 2 ) for high spatial resolution 2. in situ calibration 3. fast time response (<5 ms) 4. ultra-high vacuum compatibility 5. high electromagnetic elds and high temperature compatibility 6. reliable over a long period of operation (difficult to access) 7. radiation hardness to avoid damage by neutron and gamma radiation Bolometers absorb radiation emitted by plasma over a wide range of frequencies (IR to UV). The monitoring of this radiation provides valuable diagnostic information about the condition of the fusion plasma.…”

Section: Ferroelectric Bolometermentioning

confidence: 99%

Ferroelectric materials for fusion energy applications

Cain

Reece

2016

J. Mater. Chem. A

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A power generating fusion reactor will operate under extreme conditions of temperature and high-energy particle fluences. The energy is produced by the nuclear fusion reaction of deuterium and tritium in a plasma, which can reach temperatures of the order of 100 million C. The reaction generates helium, high energy (14 MeV) neutrons and gamma rays. The operation of a fusion reactor requires diagnostic equipment for the monitoring of temperature, pressure, magnetic fields, radiation energy and fluence, and other operational parameters. Functional materials, in particular ferroelectrics, can play many useful roles in these types of measurement. Many ferroelectrics are also known for their radiation hardness, which may favour their use in this environment. This review paper describes the functions where ferroelectrics may find useful application in a reactor, the effects of the reactor environment on materials in general, and the effects on ferroelectrics in particular. Though this review is centered on the technology associated with the Joint European Torus (JET), International Thermo-Nuclear Reactor (ITER) and the future planned DEMOnstration Power Plant (DEMO) fusion reactor types there are some similar materials related issues associated with the many other systems being explored worldwide. Conclusions are then made about the future for ferroelectric materials in fusion reactors and some of the research challenges that need to be addressed. Fig. 5 (a) Hysteresis loop of triglycine sulphate before irradiation. (b) Hysteresis loop after irradiation of a single domain crystal of triglycine sulphate. (c) Hysteresis loop after irradiation of a multidomain crystal of triglycine sulphate (redrawn from ref. 48 with permission from Elsevier). J. Mater. Chem. AThis journal is

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Section: Ferroelectric Bolometermentioning

confidence: 99%