High-density gas target at the LHCb experiment

Autor: O. Boente Garcia, G. Bregliozzi, D. Calegari, V. Carassiti, G. Ciullo, V. Coco, P. Collins, P. Costa Pinto, C. De Angelis, P. Di Nezza, R. Dumps, M. Ferro-Luzzi, F. Fleuret, G. Graziani, S. Kotriakhova, P. Lenisa, Q. Lu, C. Lucarelli, E. Maurice, S. Mariani, K. Mattioli, M. Milovanovic, L. L. Pappalardo, D. M. Parragh, A. Piccoli, P. Sainvitu, B. Salvant, F. Sanders, M. Santimaria, J. Sestak, S. Squerzanti, E. Steffens, G. Tagliente, W. Vollenberg, C. Vollinger

Publikováno v: Physical Review Accelerators and Beams, Vol 27, Iss 11, p 111001 (2024)

The recently installed internal gas target at LHCb presents exceptional opportunities for an extensive physics program for heavy-ion, hadron, spin, and astroparticle physics. A storage cell placed in the LHC primary vacuum, an advanced Gas Feed Syste

Externí odkaz: https://doaj.org/article/5d0e487c891f4e0187d27c2806dc3a63

Ratios of helicity amplitudes for exclusive ρ0 electroproduction

Autor: The HERMES Collaboration, A. Airapetian, N. Akopov, Z. Akopov, E. C. Aschenauer, W. Augustyniak, R. Avakian, A. Avetissian, E. Avetisyan, S. Belostotski, N. Bianchi, H. P. Blok, A. Borissov, J. Bowles, V. Bryzgalov, J. Burns, M. Capiluppi, G. P. Capitani, E. Cisbani, G. Ciullo, M. Contalbrigo, P. F. Dalpiaz, W. Deconinck, R. De Leo, L. De Nardo, E. De Sanctis, M. Diefenthaler, P. Di Nezza, M. Düren, M. Ehrenfried, G. Elbakian, F. Ellinghaus, R. Fabbri, A. Fantoni, L. Felawka, S. Frullani, D. Gabbert, G. Gapienko, V. Gapienko, F. Garibaldi, G. Gavrilov, V. Gharibyan, F. Giordano, S. Gliske, M. Golembiovskaya, C. Hadjidakis, M. Hartig, D. Hasch, G. Hill, A. Hillenbrand, M. Hoek, Y. Holler, I. Hristova, Y. Imazu, A. Ivanilov, H. E. Jackson, H. S. Jo, S. Joosten, R. Kaiser, G. Karyan, T. Keri, E. Kinney, A. Kisselev, N. Kobayashi, V. Korotkov, V. Kozlov, P. Kravchenko, V. G. Krivokhijine, L. Lagamba, R. Lamb, L. Lapikás, I. Lehmann, P. Lenisa, L. A. Linden-Levy, A. López Ruiz, W. Lorenzon, X.-G. Lu, X.-R. Lu, B.-Q. Ma, D. Mahon, N. C. R. Makins, S. I. Manaenkov, L. Manfré, Y. Mao, B. Marianski, A. Martinez de la Ossa, H. Marukyan, C. A. Miller, Y. Miyachi, A. Movsisyan, V. Muccifora, M. Murray, A. Mussgiller, E. Nappi, Y. Naryshkin, A. Nass, M. Negodaev, W.-D. Nowak, L. L. Pappalardo, R. Perez-Benito, N. Pickert, P. E. Reimer, A. R. Reolon, C. Riedl, K. Rith, G. Rosner, A. Rostomyan, J. Rubin, D. Ryckbosch, Y. Salomatin, F. Sanftl, A. Schäfer, G. Schnell, K. P. Schüler, B. Seitz, T.-A. Shibata, V. Shutov, M. Stancari, M. Statera, E. Steffens, J. J. M. Steijger, F. Stinzing, S. Taroian, A. Terkulov, A. Trzcinski, M. Tytgat, A. Vandenbroucke, Y. Van Haarlem, C. Van Hulse, D. Veretennikov, V. Vikhrov, I. Vilardi, S. Wang, S. Yaschenko, S. Yen, W. Yu, B. Zihlmann, P. Zupranski

Publikováno v: European Physical Journal C: Particles and Fields, Vol 71, Iss 4, Pp 1-25 (2011)

Abstract Exclusive ρ 0-meson electroproduction is studied in the HERMES experiment, using a 27.6 GeV longitudinally polarized electron/positron beam and unpolarized hydrogen and deuterium targets in the kinematic region 0.5 GeV2

Externí odkaz: https://doaj.org/article/343edb3ce4b2472a84da047bc878073b

Beam heat load and pressure rise in a cold vacuum chamber

Autor: S. Casalbuoni, A. Grau, M. Hagelstein, R. Rossmanith, F. Zimmermann, B. Kostka, E. Mashkina, E. Steffens, A. Bernhard, D. Wollmann, T. Baumbach

Publikováno v: Physical Review Special Topics. Accelerators and Beams, Vol 10, Iss 9, p 093202 (2007)

The beam heat load and the pressure in the vacuum chamber of the cold bore superconducting undulator installed at ANKA (ANgstrom source KArlsruhe) have been monitored for almost two years. Possible sources of the observed heat load could be synchrotr

Externí odkaz: https://doaj.org/article/47c46566a68f4b53a4815b48bd368e99

Generation of x-ray radiation in a storage ring by a superconductive cold-bore in-vacuum undulator

Autor: S. Casalbuoni, M. Hagelstein, B. Kostka, R. Rossmanith, M. Weisser, E. Steffens, A. Bernhard, D. Wollmann, T. Baumbach

Publikováno v: Physical Review Special Topics. Accelerators and Beams, Vol 9, Iss 1, p 010702 (2006)

The first beam measurements with a cold-bore superconducting in-vacuum undulator in a storage ring are reported. Undulators are x-ray generators in light sources. The physical limitations of these devices limit the intensity and the brilliance of the

Externí odkaz: https://doaj.org/article/f3f365590762416fa0a11349d549af61

Biotransformation profiles from a cohort of chronic fatigue women in response to a hepatic detoxification challenge.

Autor: Elardus Erasmus, Francois E Steffens, Mari van Reenen, B Chris Vorster, Carolus J Reinecke

Publikováno v: PLoS ONE, Vol 14, Iss 5, p e0216298 (2019)

Chronic fatigue, in its various manifestations, frequently co-occur with pain, sleep disturbances and depression and is a non-communicable condition which is rapidly becoming endemic worldwide. However, it is handicapped by a lack of objective defini

Externí odkaz: https://doaj.org/article/1a0a2acc545941bda0e87a62d7fe7e30