Zobrazeno 1 - 10
of 368
pro vyhledávání: '"Zasadzinski J"'
We present the results of commissioning a dedicated furnace for Nb3Sn coatings of 2.6 GHz single cell cavities. Nb3Sn is a desired coating due to its high critical temperature and smaller surface resistance compared to bulk Nb. Usage of Nb3Sn coated
Externí odkaz:
http://arxiv.org/abs/2307.08844
Autor:
Belomestnykh, S., Posen, S., Bafia, D., Balachandran, S., Bertucci, M., Burrill, A., Cano, A., Checchin, M., Ciovati, G., Cooley, L. D., Semione, G. Dalla Lana, Delayen, J., Eremeev, G., Furuta, F., Gerigk, F., Giaccone, B., Gonnella, D., Grassellino, A., Gurevich, A., Hillert, W., Iavarone, M., Knobloch, J., Kubo, T., Kwok, W. K., Laxdal, R., Lee, P. J., Liepe, M., Martinello, M., Melnychuk, O. S., Nassiri, A., Netepenko, A., Padamsee, H., Pagani, C., Paparella, R., Pudasaini, U., Reece, C. E., Reschke, D., Romanenko, A., Ross, M., Saito, K., Sauls, J., Seidman, D. N., Solyak, N., Sung, Z., Umemori, K., Valente-Feliciano, A. -M., Delsolaro, W. Venturini, Walker, N., Weise, H., Welp, U., Wenskat, M., Wu, G., Xi, X. X., Yakovlev, V., Yamamoto, A., Zasadzinski, J.
Radio frequency superconductivity is a cornerstone technology for many future HEP particle accelerators and experiments from colliders to proton drivers for neutrino facilities to searches for dark matter. While the performance of superconducting RF
Externí odkaz:
http://arxiv.org/abs/2204.01178
Superconducting radio-frequency (SRF) niobium cavities are the modern means of particle acceleration and an enabling technology for record coherence superconducting quantum systems and ultra-sensitive searches for new physics. Here, we report a syste
Externí odkaz:
http://arxiv.org/abs/2103.10601
Point contact tunneling (PCT) spectroscopy measurements are reported over wide areas of cm-sized cut outs from niobium superconducting RF cavities. A comparison is made between a high-quality, conventionally processed (CP) cavity with a high field Q
Externí odkaz:
http://arxiv.org/abs/1805.06359
Autor:
Junginger, T., Calatroni, S., Sublet, A., Terenziani, G., Prokscha, T., Salman, Z., Proslier, T., Zasadzinski, J.
Publikováno v:
2017 Supercond. Sci. Technol. 30 125013
Point contact tunneling (PCT) and low energy muon spin rotation (LE-muSR) are used to probe, on the same samples, the surface superconducting properties of micrometer thick niobium films deposited onto copper substrates using different sputtereing te
Externí odkaz:
http://arxiv.org/abs/1703.08635
Autor:
Martinello, M., Grassellino, A., Checchin, M., Romanenko, A., Melnychuck, O., Sergatskov, D. A., Posen, S., Zasadzinski, J. F.
Publikováno v:
Appl. Phys. Lett. 109, 062601 (2016)
Previous work has demonstrated that the radio frequency surface resistance of niobium resonators is dramatically reduced when nitrogen impurities are dissolved as interstitial in the material. The origin of this effect is attributed to the lowering o
Externí odkaz:
http://arxiv.org/abs/1606.04174
Autor:
Checchin, M., Martinello, M., Romanenko, A., Grassellino, A., Sergatskov, D. A., Posen, S., Melnychuk, O., Zasadzinski, J. F.
Publikováno v:
Phys. Rev. Applied 5, 044019 (2016)
Quench of superconducting radio-frequency cavities frequently leads to the lowered quality factor Q0, which had been attributed to the additional trapped magnetic flux. Here we demonstrate that the origin of this magnetic flux is purely extrinsic to
Externí odkaz:
http://arxiv.org/abs/1605.00272
Autor:
Cao, C., Tao, R., Ford, D. C., Klie, R. F., Proslier, T., Cooley, L. D., Dzyuba, A., Zapol, P., Warren, M., Lind, H., Zasadzinski, J. F.
Publikováno v:
Phys. Rev. B 91, 094302 (2015)
High purity niobium (Nb), subjected to the processing methods used in the fabrication of superconducting RF cavities, displays micron-sized surface patches containing excess carbon. High-resolution transmission electron microscopy and electron energy
Externí odkaz:
http://arxiv.org/abs/1503.02733
Nanoscale defect structure within the magnetic penetration depth of ~100nm is key to the performance limitations of niobium superconducting radio frequency (SRF) cavities. Using a unique combination of advanced thermometry during cavity RF measuremen
Externí odkaz:
http://arxiv.org/abs/1503.02046
Autor:
Gronostajski, Z., Pater, Z., Madej, L., Gontarz, A., Lisiecki, L., Łukaszek-Sołek, A., Łuksza, J., Mróz, S., Muskalski, Z., Muzykiewicz, W., Pietrzyk, M., Śliwa, R.E., Tomczak, J., Wiewiórowska, S., Winiarski, G., Zasadziński, J., Ziółkiewicz, S.
Publikováno v:
In Archives of Civil and Mechanical Engineering May 2019 19(3):898-941
