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6 results on '"Dudek L"'

1. Operational experience of ALBA's Digital LLRF at SOLARIS Light Source

Author

Borowiec, P., Dudek, L., Kitka, W., Kisiel, A., Klimczyk, P., Knafel, M., Kopec, M., Wawrzyniak, A., Perez, F., Salom, A., Andersson, A., Lindvall, R., Malmgren, L., and Mitrovic, A.

Subjects
Accelerator Physics (physics.acc-ph), FOS: Physical sciences, Physics - Accelerator Physics
Abstract

For control of RF cavities installed in Solaris storage ring light source the digital Low Level RF (dLLRF) system was necessary from the beginning of operation. Since there were no expertise at the new constructed facility and no time for development due to funds deadline, almost turn-key dLLRF from Alba has been implemented according to MAXIV selection. Thanks to high flexibility of dLLRF only small adaptations were needed in terms of interfaces to auxiliary systems and setup of parameters. This paper summarizes operational experience about installation, commissioning, learning-curve from entry-level user, beam operation and future upgrades of this dLLRF., Comment: Poster presented at LLRF Workshop 2017 (LLRF2017, arXiv:1803.07677)

Published
2018
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2. Lessons Learned During the Manufacture of the NCSX Modular Coils

Author

Chrzanowski, James H., Raftopoulos, S., Paul, J. F., Meighan, Thomas G., Dudek, L., Fogarty, Paul J., and James H. Chrzanowski,Thomas G. Meighan, Steven Raftopoulos and Lawrence Dudek Paul J. Fogarty

Abstract

The National Compact Stellarator Experiment's (NCSX) modular coils presented a number of engineering and manufacturing challenges due to their complex shapes, requirements for high dimensional accuracy and high current density requirements due to space constraints. Being the first of their kind, these coils required the implementation of many new manufacturing and measuring techniques and procedures. This was the first time that these manufacturing techniques and methods were applied in the production of coils at the laboratory. This resulted in a steep learning curve for the first several coils. Through the effective use of procedures, tooling modifications, involvement and ownership by the manufacturing workforce, and an emphasis on safety, the assembly team was able to reduce the manufacturing times and improve upon the manufacturing methods. This paper will discuss the learning curve and steps that were taken to improve the manufacturing efficiency and reduce the manufacturing times for the modular coils without forfeiting quality.

Published
2009

3. Accomplishments in Field Period Assembly for NCSX* This is how we did it

Author

Viola, Michael, Edwards, J., Brown, T., Dudek, L., Strykowsky, R., Ellis, R., Heitzenroeder, P., Cole, Michael, and Michael Viola, J. Edwards T. Brown L. Dudek R. Ellis P. Heitzenroeder R. Strykowsky and Michael Cole

Abstract

The National Compact Stellarator Experiment (NCSX) was a collaborative effort between ORNL and PPPL. PPPL provided the assembly techniques with guidance from ORNL to meet design criteria. The individual vacuum vessel segments, modular coils, trim coils, and toroidal field coils components were delivered to the Field Period Assembly (FPA) crew who then would complete the component assemblies and then assemble the final three field period assemblies, each consisting of two sets of three modular coils assembled over a 120o vacuum vessel segment with the trim coils and toroidal field coils providing the outer layer. The requirements for positioning the modular coils were found to be most demanding. The assembly tolerances required for accurate positioning of the field coil windings in order to generate sufficiently accurate magnetic fields strained state of the art techniques in metrology and alignment and required constant monitoring of assembly steps with laser trackers, measurement arms, and photogrammetry. The FPA activities were being performed concurrently while engineering challenges were being resolved. For example, it was determined that high friction electrically isolated shims were needed between the modular coil interface joints and low distortion welding was required in the nose region of those joints. This took months of analysis and development yet the assembly was not significantly impacted because other assembly tasks could be performed in parallel with ongoing assembly tasks as well as tasks such as advance tooling setup preparation for the eventual welding tasks. The crew technicians developed unique, accurate time saving techniques and tooling which provided significant cost and schedule savings. Project management displayed extraordinary foresight and every opportunity to gain advanced knowledge and develop techniques was taken advantage of. Despite many risk concerns, the cost and schedule performance index was maintained nearly 1.0 during the assembly phase until project cancellation. In this paper, the assembly logic, the engineering challenges, solutions to those challenges and some of the unique and clever assembly techniques, will be presented.

Published
2009

5. Review of deuterium-tritium results from the Tokamak Fusion Test Reactor

Author

Mcguire, K. M., Adler, H., Alling, P., Ancher, C., Anderson, H., Anderson, J. L., Anderson, J. W., Arunasalam, V., Ascione, G., Ashcroft, D., Barnes, C. W., Barnes, G., Batha, S., Bateman, G., Beer, M., Bell, M. G., Bell, R., Bitter, M., Blanchard, W., Bretz, N. L., Brunkhorst, C., Budny, R., Bush, C. E., Camp, R., Caorlin, M., Carnevale, H., Cauffman, S., Chang, Z., Chang, C. S., Cheng, C. Z., Chrzanowski, J., Collins, J., Coward, G., Cropper, M., Darrow, D. S., Daugert, R., Delooper, J., Dendy, R., Dorland, W., Dudek, L., Duong, H., Durst, R., Efthimion, P. C., Ernst, D., Evenson, H., Fisch, N. J., Fisher, R., Fonck, R. J., Fredd, E., Fredrickson, E., Fromm, N., Fu, G. Y., Fujita, T., Furth, H. P., Garzotto, V., Gentile, C., Gilbert, J., Gioia, J., Gorelenkov, N., Grek, B., Grisham, L. R., Hammett, G., Hanson, G. R., Hawryluk, R. J., Heidbrink, W., Herrmann, H. W., Hill, K. W., Hosea, J., Hsuan, H., Hughes, M., Hulse, R., Janos, A., Jassby, D. L., Jobes, F. C., Johnson, D. W., Johnson, L. C., Kalish, M., Kamperschroer, J., Kesner, J., Kugel, H., Labik, G., Lam, N. T., Lamarche, P. H., Lawson, E., Leblanc, B., Levine, J., Levinton, F. M., Loesser, D., Long, D., Loughlin, M. J., Machuzak, J., Majeski, R., Mansfield, D. K., Marmar, E. S., Marsala, R., Martin, A., Martin, G., Mazzucato, E., Mauel, M., Mccarthy, M. P., Mcchesney, J., Mccormack, B., Mccune, D. C., Mckee, G., Meade, D. M., Medley, S. S., Mikkelsen, D. R., Mirnov, S. V., Mueller, D., Murakami, M., Murphy, J. A., Nagy, A., Navratil, G. A., Nazikian, R., Newman, R., Norris, M., Oconnor, T., Oldaker, M., Ongena, J., Osakabe, M., Owens, D. K., Park, H., Park, W., Parks, P., Paul, S. F., Pearson, G., Perry, E., Persing, R., Petrov, M., Phillips, C. K., Phillips, M., Pitcher, S., Pysher, R., Qualls, A. L., Raftopoulos, S., Ramakrishnan, S., Ramsey, A., Rasmussen, D. A., Redi, M. H., Renda, G., Rewoldt, G., Roberts, D., Rogers, J., Rossmassler, R., Roquemore, A. L., Ruskov, E., Sabbagh, S. A., Sasao, M., Schilling, G., Schivell, J., Schmidt, G. L., Scillia, R., Scott, S. D., Semenov, I., Senko, T., Sesnic, S., Sissingh, R., Skinner, C. H., Snipes, J., Stencel, J., Stevens, J., Stevenson, T., Stratton, B. C., Strachan, J. D., Stodiek, W., Swanson, J., Synakowski, E., Takahashi, H., Tang, W., Taylor, G., Terry, J., Thompson, M. E., Tighe, W., Timberlake, J. R., Tobita, K., Towner, H. H., Tuszewski, M., Vonhalle, A., Vannoy, C., Viola, M., Vongoeler, S., Voorhees, D., Walters, R. T., Wester, R., White, R., Wieland, R., Wilgen, J. B., William Dorland, Wilson, J. R., Winston, J., Wright, K., Wong, K. L., Woskov, P., Wurden, G. A., Yamada, M., Yoshikawa, S., Young, K. M., Zarnstorff, M. C., Zavereev, V., and Zweben, S. J.

6. DEUTERIUM-TRITIUM EXPERIMENTS ON THE TOKAMAK FUSION TEST REACTOR

Author

Hosea, J., Adler, Jh, Alling, P., Ancher, C., Anderson, H., Anderson, Jl, Anderson, Jw, Arunasalam, V., Ascione, G., Ashcroft, D., Barnes, Cw, Barnes, G., Batha, S., Bell, Mg, Bell, R., Bitter, M., Blanchard, W., Bretz, Nl, Brunkhorst, C., Budny, R., Burgess, T., Bush, H., Bush, Ce, Camp, R., Caorlin, M., Carnevale, H., Cauffman, S., Chang, Z., Cheng, Cz, Chrzanowski, J., Collins, J., Coward, G., Cropper, M., Darrow, Ds, Daugert, R., Delooper, J., Duong, H., Dudek, L., Durst, R., Efthimion, Pc, Ernst, D., Faunce, J., Fisher, R., Fonck, Rj, Fredd, E., Fredrickson, E., Fromm, N., Fu, Gy, Furth, Hp, Garzotto, V., Gentile, C., Gettelfinger, G., Gilbert, J., Gioia, J., Golian, T., Gorelenkov, N., Grek, B., Grisham, Lr, Gregory Hammett, Hanson, Gr, Hawryluk, Rj, Heidbrink, W., Herrmann, Hw, Hill, Kw, Hsuan, H., Janos, A., Jassby, Dl, Jobes, Fc, Johnson, Dw, Johnson, Lc, Kamperschroer, J., Kesner, J., Kugel, H., Kwon, S., Labik, G., Lam, Nt, Lamarche, Ph, Lawson, E., Leblanc, B., Leonard, M., Levine, J., Levinton, Fm, Loesser, D., Long, D., Loughlin, Mj, Machuzak, J., Mansfield, Dk, Marchlik, M., Marmar, Es, Marsala, R., Martin, A., Martin, G., Mastrocola, V., Mazzucato, E., Majeski, R., Mauel, M., Mccarthy, Mp, Mccormack, B., Mccune, Dc, Mcguire, Km, Meade, Dm, Medley, Ss, Mikkelsen, Dr, Milora, Sl, Mueller, D., Murakami, M., Murphy, Ja, Nagy, A., Navratil, Ga, Nazikian, R., Newman, R., Nishitani, T., Norris, M., Oconnor, T., Oldaker, M., Ongena, J., Osakabe, M., Owens, Dk, Park, H., Park, W., Paul, Sf, Pavlov, Yi, Pearson, G., Perkins, F., Perry, E., Persing, R., Petrov, M., Phillips, Ck, Pitcher, S., Popovichev, S., Pysher, R., Qualls, Al, Raftopoulos, S., Ramakrishnan, R., Ramsey, A., Rasmussen, Da, Redi, Mh, Renda, G., Rewoldt, G., Roberts, D., Rogers, J., Rossmassler, R., Roquemore, Al, Ruchov, E., Sabbagh, Sa, Sasao, M., Schilling, G., Schivell, J., Schmidt, Gl, Scillia, R., Scott, Sd, Senko, T., Sissingh, R., Skinner, C., Snipes, J., Snook, P., Stencel, J., Stevens, J., Stevenson, T., Stratton, Bc, Strachan, Jd, Stodiek, W., Synakowski, E., Tang, W., Taylor, G., Terry, J., Thompson, Me, Timberlake, Jr, Towner, Hh, Vonhalle, A., Vannoy, C., Wester, R., Wieland, R., Wilgen, Jb, Williams, M., Wilson, Jr, Winston, J., Wright, K., Wong, D., Wong, Kl, Woskov, P., Wurden, Ga, Yamada, M., Yeun, A., Yoshikawa, S., Young, Km, Zarnstorff, Mc, and Zweben, Sj

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