Search Results - "Chrobak, C."

Cross machine investigation of magnetic tokamak dust: Morphological and elemental analysis by De Angeli, M., Ripamonti, D., Ghezzi, F., Tolias, P., Conti, C., Arnas, C., Jerab, M., Rudakov, D.L., Chrobak, C.P., Irby, J., LaBombard, B., Lipschultz, B., Maddaluno, G.

“…The presence of magnetic dust can be an important issue for future fusion reactors where plasma breakdown is critical. Magnetic dust has been collected from…”
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Impact of divertor material on neutral recycling and discharge fueling in DIII-D by Bykov, I, Rudakov, D L, Pigarov, A Yu, Hollmann, E M, Guterl, J, Boedo, J A, Chrobak, C P, Abrams, T, Guo, H Y, Lasnier, C J, McLean, A G, Wang, H Q, Watkins, J G, Thomas, D M

“…Experiments with the lower divertor of DIII-D during the Metal Rings Campaign (MRC) show that the fraction F of atomic D in the total recycling flux is…”
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Net versus gross erosion of silicon carbide in DIII-D divertor by Rudakov, D L, Wampler, W R, Abrams, T, Ding, R, Boedo, J A, Bringuier, S, Bykov, I, Chrobak, C P, Elder, J D, Guo, H Y, Lasnier, C J, Mathison, E, McLean, A G, Sinclair, G, Stangeby, P C, Thomas, D M, Unterberg, E A, Wang, H, Watkins, J G

“…Gross and net erosion rates of silicon from silicon carbide (SiC) coatings were measured in the divertor of DIII-D under well diagnosed reactor-relevant plasma…”
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Exposures of tungsten nanostructures to divertor plasmas in DIII-D by Rudakov, D L, Wong, C P C, Doerner, R P, Wright, G M, Abrams, T, Baldwin, M J, Boedo, J A, Briesemeister, A R, Chrobak, C P, Guo, H Y, Hollmann, E M, McLean, A G, Fenstermacher, M E, Lasnier, C J, Leonard, A W, Moyer, R A, Pace, D C, Thomas, D M, Watkins, J G

“…Tungsten nanostructures (W-fuzz) prepared in the PISCES-A linear device have been found to survive direct exposure to divertor plasmas in DIII-D. W-fuzz was…”
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Arcing and its role in PFC erosion and dust production in DIII-D by Rudakov, D.L., Chrobak, C.P., Doerner, R.P., Krasheninnikov, S.I., Moyer, R.A., Umstadter, K.R., Wampler, W.R., Wong, C.P.C.

“…Two types of arc tracks are observed on the plasma-facing components (PFCs) in DIII-D. “Unmagnetized” random walk tracks are produced during glow discharges;…”
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DiMES PMI research at DIII-D in support of ITER and beyond by Rudakov, D.L., Abrams, T., Ding, R., Guo, H.Y., Stangeby, P.C., Wampler, W.R., Boedo, J.A., Briesemeister, A., Brooks, J.N., Buchenauer, D.A., Bykov, I., Chrobak, C., Doerner, R.P., Donovan, D., Elder, J.D., Fenstermacher, M.E., Guterl, J., Hinson, E., Hollmann, E.M., Lasnier, C.J., Leonard, A.W., McLean, A.G., Moyer, R.A., Nygren, R.E., Thomas, D.M., Unterberg, E.A., Watkins, J.G., Wong, C.P.C.

“…•Net erosion of high-Z PFC materials in DIII-D divertor is reduced by short scale re-deposition.•Positive electrical biasing locally suppresses erosion of…”
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Investigation of He-W interactions using DiMES on DIII-D by Doerner, R P, Rudakov, D L, Chrobak, C P, Briesemeister, A R, Corr, C, De Temmerman, G, Kluth, P, Lasnier, C J, McLean, A G, Pace, D C, Pitts, R A, Schmitz, O, Thompson, M, Winters, V

“…Tungsten button samples were exposed to He ELMing H-mode plasma in DIII-D using 2.3 MW of electron cyclotron heating power. Prior to the exposures, the W…”
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Control of high-Z PFC erosion by local gas injection in DIII-D by Rudakov, D.L., Stangeby, P.C., Wong, C.P.C., McLean, A.G., Wampler, W.R., Watkins, J.G., Boedo, J.A., Briesemeister, A., Buchenauer, D.A., Chrobak, C.P., Elder, J.D., Fenstermacher, M.E., Guo, H.Y., Lasnier, C.J., Leonard, A.W., Maingi, R., Moyer, R.A.

“…Reduced erosion of a high-Z PFC divertor surface was observed in DIII-D with local injection of methane and deuterium gases. Molybdenum-coated silicon samples…”
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Measurements of gross erosion of Al in the DIII-D divertor by Chrobak, C., Stangeby, P.C., Leonard, A.W., Rudakov, D.L., Wong, C.P.C., McLean, A.G., Wright, G.M., Buchenauer, D.A., Watkins, J.G., Wampler, W.R., Elder, J.D., Doerner, R.P., Nishijima, D., Tynan, G.R.

“…Aluminum (Al) is a convenient proxy for beryllium (Be) plasma material interaction studies since they have a number of physical and chemical similarities. Al…”
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Effect of lithium in the DIII-D SOL and plasma-facing surfaces by Jackson, G.L., Chrobak, C.P., McLean, A.G., Maingi, R., Mansfield, D.K., Roquemore, A.L., Diwakar, P., Hassanein, A., Lietz, A., Rudakov, D.L., Sizyuk, T., Tripathi, J.

“…Lithium has been introduced into the DIII-D tokamak, and migration and retention in graphite have been characterized since no lithium was present in DIII-D…”
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Tungsten erosion by unipolar arcing in DIII-D by Bykov, I, Chrobak, C P, Abrams, T, Rudakov, D L, Unterberg, E A, Wampler, W R, Hollmann, E M, Moyer, R A, Boedo, J A, Stahl, B, Hinson, E T, Yu, J H, Lasnier, C J, Makowski, M, McLean, A G

“…Unipolar arcing was an important mechanism of metal surface erosion during the recently conducted Metal Rings Campaign in DIII-D when two toroidally continuous…”
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Lithium granule ablation and penetration during ELM pacing experiments at DIII-D by Lunsford, R., Bortolon, A., Roquemore, A.L., Mansfield, D.K., Nagy, A., Maingi, R., Parks, P.B., Jackson, G., Gilson, E., Chrobak, C.P.

“…At DIII-D, lithium granules were radially injected into the plasma at the outer midplane to trigger and pace edge localized modes (ELMs). Granules ranging in…”
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Lithium granular injector operational experience triggering ELMs in H-mode on DIII-D by Nagy, A., Bortolon, A., Gilson, E. P., Lunsford, R., Maingi, R., Mansfield, D. K., Roquemore, A. L., Chrobak, C. P., Jackson, G. L.

“…An injector device to trigger frequent edge localized modes (ELMs) was developed at Princeton Plasma Physics Laboratory (PPPL) and subsequently installed and…”
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Xe+-irradiation effects on multilayer thin-film optical surfaces in EUV lithography by Allain, J.P., Hassanein, A., Allain, M.M.C., Heuser, B.J., Nieto, M., Chrobak, C., Rokusek, D., Rice, B.

“…In extreme ultraviolet lithography (EUVL) environments, transient plasma dynamics dictate conditions for particle/surface interactions. A critical challenge…”
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Cross machine investigation of magnetic tokamak dust: Morphological and elemental analysis by De Angeli, M., Ripamonti, D., Ghezzi, F., Tolias, P., Conti, C., Arnas, C., Jerab, M., Rudakov, D. L., Chrobak, C. P., Irby, J., LaBombard, B., Lipschultz, B., Maddaluno, G.

“…Not provided…”
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Net versus gross erosion of silicon carbide in DIII-D divertor by Rudakov, D. L., Wampler, W. R., Abrams, T., Ding, R., Boedo, J. A., Bringuier, S., Bykov, I., Chrobak, C. P., Elder, J. D., Guo, H. Y., Lasnier, C. J., Mathison, E., McLean, A. G., Sinclair, G., Stangeby, P. C., Thomas, D. M., Unterberg, E. A., Wang, H., Watkins, J. G.

“…Gross and net erosion rates of silicon from silicon carbide (SiC) coatings were measured in the divertor of DIII-D under well diagnosed reactor-relevant plasma…”
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Tungsten erosion by unipolar arcing in DIII-D by Bykov, Igor, Chrobak, C. P., Abrams, Tyler, Rudakov, D. L., Unterberg, Ezekial A., Wampler, W. R., Hollmann, E. M., Moyer, R. A., Boedo, J. A., Stahl, B., Hinson, Edward T., Yu, J. H., Lasnier, C. J., Makowski, M., McLean, A. G.

“…Here, unipolar arcing was an important mechanism of metal surface erosion during the recently conducted Metal Rings Campaign in DIII-D when two toroidally…”
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Elemental and topographical imaging of microscopic variations in deposition on NSTX-U and DIII-D samples by Skinner, C.H., Chrobak, C.P., Jaworski, M.A., Kaita, R., Koel, B.E.

“…•Elemental images show strong microscopic variations in deposition.•Topographical maps were compared to the elemental deposition pattern.•Deposition is…”
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Control of high-Z PFC erosion by local gas injection in DIII-D by Rudakov, D. L., Stangeby, P. C., Wong, C. P. C., McLean, A. G., Wampler, W. R., Watkins, J. G., Boedo, J. A., Briesemeister, Alexis R., Buchenauer, Dean A., Chrobak, C. P., Elder, J. D., Fenstermacher, M. E., Guo, H. Y., Lasnier, C. J., Leonard, A. W., Maingi, R., Moyer, R. A.

“…Reduced erosion of a high-Z PFC divertor surface was observed in DIII-D with local injection of methane and deuterium gases. Molybdenum-coated silicon samples…”
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Characterizing Low-Z erosion and deposition in the DIII-D divertor using aluminum by Chrobak, C.P., Doerner, R.P., Stangeby, P.C., Wampler, W.R., Rudakov, D.L., Wright, G.M., Abrams, T., Ding, R., Elder, J.D., Guterl, J., Guo, H.Y., Lasnier, C., Thomas, D.M., Leonard, A.W., Buchenauer, D.A., McLean, A.G., Watkins, J.G., Tynan, G.R.

“…•Measured localized erosion and redeposition of Aluminum in DIII-D divertor plasmas.•Modeled multi-step material migration across surfaces with different…”
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