Preliminary results of window radiation resistance investigations

Orlinski, D. V.; Al'tovsky, I.V.; Bazilevskaya, T.A.; Gritsyna, V.T.; In'kov, V.I; Ivanin, I.A.; Kovalchuk, Vitaly Dmitrievich; Krasilnikov, A.; Павлов, Д. В.; Tarabrin, Yu. A.; Turchin, S. I.; Vojtsenya, V.S.; Yudin, I.L.

doi:10.1016/0022-3115(94)90995-4

Cited by 32 publications

(13 citation statements)

References 7 publications

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“…KU1 and KS4V have been demonstrated to be highly radiation resistant with respect to their optical properties under ionising radiation [5], making them highly applicable for diagnostic and remote handling systems. Both fused silica grades are being examined as candidate materials for their use as optical components (windows, lenses and optical fibres) within the ITER diagnostics programme [2].…”

Section: Introductionmentioning

confidence: 99%

Photoluminescence in neutron irradiated fused silica

Martin

León

Ibarra

2005

phys. stat. sol. (c)

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In this work, the effects of neutron irradiations (10 21 n/m 2 and 10 22 n/m 2 doses) on photoluminescence of several fused silica grades with different OH contents are studied. Neutron irradiation induces three emission processes: at 4.2 eV with maximum excitation energy around 4.95 eV and halfwidth of 0.27 eV, at 1.9 eV with excitation around 4.6 eV, and at 2.3 eV with two components (4.6 eV and 3.9 eV) excitation spectra. The emission at 2.3 eV has not been previously reported at room temperature. Dose dependences of all the emissions show a complex behaviour different for each grade that does not indicate a clear correlation with the OH content of the material.

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Section: Introductionmentioning

confidence: 99%

Photoluminescence in neutron irradiated fused silica

Martin

León

Ibarra

2005

phys. stat. sol. (c)

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“…Irradiation tests using mixed gamma and neutron sources have reported similar darkening effects. However, neutron damage is far more disruptive than gamma, causing lattice defects that quickly create significant attenuation across the visible spectrum (Orlinski et al 1994). It is indicated that neutron irradiation of 10 19 n/cm 2 fluence induced a 2 percent volume expansion of sapphire (Zhang et al 2013).…”

Section: Sapphirementioning

confidence: 99%

Technical Readiness and Gaps Analysis of Commercial Optical Materials and Measurement Systems for Advanced Small Modular Reactors

Anheier¹,

Suter²,

Qiao³

et al. 2013

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Energy Research and Development Roadmap and industry stakeholders by evaluating optically based instrumentation and control (I&C) concepts for advanced small modular reactor (AdvSMR) applications. These advanced designs will require innovative thinking in terms of engineering approaches, materials integration, and I&C concepts to realize their eventual viability and deployment. The primary goals of this report include:1. Establish preliminary I&C needs, performance requirements, and possible gaps for AdvSMR designs based on best-available published design data.2. Document commercial off-the-shelf (COTS) optical sensors, components, and materials in terms of their technical readiness to support essential AdvSMR in-vessel I&C systems.3. Identify technology gaps by comparing the in-vessel monitoring requirements and environmental constraints to COTS optical sensor and materials performance specifications.4. Outline a future research, development, and demonstration (RD&D) program plan that addresses these gaps and develops optical-based I&C systems that enhance the viability of future AdvSMR designs.The DOE-NE roadmap outlines RD&D activities intended to overcome technical barriers that currently limit advances in nuclear energy. As part of this strategy, DOE-NE is sponsoring research on advanced reactor supportive technologies to reduce the identified barriers. Key challenges that must be overcome include the high capital costs to develop nuclear power plants, maintaining safety performance as the reactor fleet expands, minimizing nuclear waste, and maintaining strong proliferation resistance. AdvSMR designs are a major component of this strategy, because these designs offer a number of unique advantages. The modular and small size of AdvSMR designs naturally lead to reduced capital investments and, potentially, construction savings through factory fabrication. However, new economic and technical challenges accompany the many attractive features offered by AdvSMR designs. Specifically, the modest power output of AdvSMRs does not provide the economy of scale afforded by large reactors. In addition, many of the AdvSMR designs operate at much higher temperatures than lightwater reactors and require instrumentation to withstand harsh, in-vessel environments arising from unconventional, chemically aggressive coolants and unique reactor system configurations.Addressing these I&C challenges will be critically important to the AdvSMR development program to ensure the viability and future success of advanced reactor designs. Solutions will likely be found through evolution of conventional reactor technology, and the development of entirely new concepts. Early pressure/boiling water reactors used conventional I&C technologies (e.g., thermocouples, ionchambers, strain-gauge pressure sensors) to satisfy design requirements. Because these technologies worked well in the relatively low-temperature reactor designs, the demand for alternate I&C technologies was limited. At the time, optical-based reactor monitoring concepts were g...

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“…KU1 and KS-4V are known to be highly radiation resistant [2][3][4]. In addition, work on laser damage during irradiation showed KU1 to be excellent in terms of dose and dose rate effects [5].…”

Section: Introductionmentioning

confidence: 99%