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  1. Article: Observation of incoherent diffraction radiation from a single-edge target in the visible-light region.

    Muto, T / Araki, S / Hamatsu, R / Hayano, H / Hirose, T / Karataev, P / Naumenko, G / Potylitsyn, A / Urakawa, J

    Physical review letters

    2003  Volume 90, Issue 10, Page(s) 104801

    Abstract: An experiment to investigate the diffraction radiation from a single edge target has been performed at the accelerator test facility of KEK with the aim of developing noninvasive beam diagnostics. The yield and the angular distribution of diffraction ... ...

    Abstract An experiment to investigate the diffraction radiation from a single edge target has been performed at the accelerator test facility of KEK with the aim of developing noninvasive beam diagnostics. The yield and the angular distribution of diffraction radiation as a function of the impact parameter was measured in the visible light region. The distributions were qualitatively consistent with the theoretical expectation. This work exhibits the first observation of the incoherent diffraction radiation in the visible light region.
    Language English
    Publishing date 2003-03-14
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.90.104801
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Four-photon decay of orthopositronium: A test of charge-conjugation invariance.

    Yang / Chiba / Hamatsu / Hirose / Matsumoto / Yu

    Physical review. A, Atomic, molecular, and optical physics

    1996  Volume 54, Issue 3, Page(s) 1952–1956

    Language English
    Publishing date 1996-09
    Publishing country United States
    Document type Journal Article
    ZDB-ID 209769-2
    ISSN 1050-2947 ; 2469-9926 ; 0556-2791
    ISSN 1050-2947 ; 2469-9926 ; 0556-2791
    DOI 10.1103/physreva.54.1952
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Measurement of five-photon decay in orthopositronium.

    Matsumoto / Chiba / Hamatsu / Hirose / Yang / Yu

    Physical review. A, Atomic, molecular, and optical physics

    1996  Volume 54, Issue 3, Page(s) 1947–1951

    Language English
    Publishing date 1996-09
    Publishing country United States
    Document type Journal Article
    ZDB-ID 209769-2
    ISSN 1050-2947 ; 2469-9926 ; 0556-2791
    ISSN 1050-2947 ; 2469-9926 ; 0556-2791
    DOI 10.1103/physreva.54.1947
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Beam-size measurement with optical diffraction radiation at KEK accelerator test facility.

    Karataev, Pavel / Araki, Sakae / Hamatsu, Ryosuke / Hayano, Hitoshi / Muto, Toshiya / Naumenko, Gennady / Potylitsyn, Alexander / Terunuma, Nobuhiro / Urakawa, Junji

    Physical review letters

    2004  Volume 93, Issue 24, Page(s) 244802

    Abstract: An experiment on the investigation of optical diffraction radiation (ODR) from a slit target as a possible tool for noninvasive electron beam-size diagnostics has been performed at the KEK accelerator test facility. The experimental setup has been ... ...

    Abstract An experiment on the investigation of optical diffraction radiation (ODR) from a slit target as a possible tool for noninvasive electron beam-size diagnostics has been performed at the KEK accelerator test facility. The experimental setup has been installed at the diagnostics section of the extraction line. We have performed the first incoherent ODR observation from a slit target. The measured angular distributions are in reasonable agreement with the theoretical expectation. The beam-size effect onto the ODR angular pattern has been observed. Moreover, the sensitivity to the beam size as small as 14 microm has been achieved.
    Language English
    Publishing date 2004-12-10
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.93.244802
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Measurement of positron production efficiency from a tungsten monocrystalline target using 4- and 8-GeV electrons.

    Suwada, T / Anami, S / Chehab, R / Enomoto, A / Furukawa, K / Kakihara, K / Kamitani, T / Ogawa, Y / Ohsawa, S / Oogoe, T / Okuno, H / Fujita, T / Umemori, K / Yoshida, K / Hamatsu, R / Sasahara, K / Ababiy, V / Potylitsyn, A P / Vnukov, I E

    Physical review. E, Statistical, nonlinear, and soft matter physics

    2003  Volume 67, Issue 1 Pt 2, Page(s) 16502

    Abstract: Intense positron sources are being widely investigated for the next-generation linear colliders and B factories. A new method utilizing an axially oriented crystal as a positron-production target is one of the bright schemes, since it provides a powerful ...

    Abstract Intense positron sources are being widely investigated for the next-generation linear colliders and B factories. A new method utilizing an axially oriented crystal as a positron-production target is one of the bright schemes, since it provides a powerful photon source through channeling and coherent bremsstrahlung processes when high-energy electrons penetrate the target. A series of positron-production experiments with tungsten crystals hit by 4- and 8-GeV single-bunch electron beams were carried out at the KEKB 8-GeV injector linac. Three tungsten crystals with different thicknesses (2.2, 5.3, and 9.0 mm) and those combined with amorphous tungsten plates were tested on a precise goniometer. The positron-production yields were measured with a magnetic spectrometer in the positron momentum (P(e(+))) range from 5 to 20 MeV/c. The angle of the <111> crystal axis with respect to the electron-beam direction was controlled by measuring the relative intensities of the produced positrons as a function of the rotational angle of the goniometer. The results show that the enhancements of the positron yield from crystal targets compared to amorphous targets of the same thickness at P(e(+))=20 MeV/c are from 1.5 to 3.7 and from 1.8 to 5.1, depending upon the target thickness for 4- and 8-GeV electrons, respectively.
    Language English
    Publishing date 2003-01
    Publishing country United States
    Document type Journal Article
    ISSN 1539-3755
    ISSN 1539-3755
    DOI 10.1103/PhysRevE.67.016502
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Inclusive K(S);(0)K(S);(0) resonance production in ep collisions at HERA.

    Chekanov, S / Derrick, M / Magill, S / Musgrave, B / Nicholass, D / Repond, J / Yoshida, R / Mattingly, M C K / Antonioli, P / Bari, G / Bellagamba, L / Boscherini, D / Bruni, A / Bruni, G / Cindolo, F / Corradi, M / Iacobucci, G / Margotti, A / Nania, R /
    Polini, A / Antonelli, S / Basile, M / Bindi, M / Cifarelli, L / Contin, A / De Pasquale, S / Sartorelli, G / Zichichi, A / Bartsch, D / Brock, I / Hartmann, H / Hilger, E / Jakob, H-P / Jüngst, M / Nuncio-Quiroz, A E / Paul, E / Samson, U / Schönberg, V / Shehzadi, R / Wlasenko, M / Brook, N H / Heath, G P / Morris, J D / Capua, M / Fazio, S / Mastroberardino, A / Schioppa, M / Susinno, G / Tassi, E / Kim, J Y / Ibrahim, Z A / Kamaluddin, B / Wan Abdullah, W A T / Ning, Y / Ren, Z / Sciulli, F / Chwastowski, J / Eskreys, A / Figiel, J / Galas, A / Gil, M / Olkiewicz, K / Stopa, P / Zawiejski, L / Adamczyk, L / Bołd, T / Grabowska-Bołd, I / Kisielewska, D / Lukasik, J / Przybycień, M / Suszycki, L / Kotański, A / Słomiński, W / Behrens, U / Blohm, C / Bonato, A / Borras, K / Ciesielski, R / Coppola, N / Fang, S / Fourletova, J / Geiser, A / Göttlicher, P / Grebenyuk, J / Gregor, I / Haas, T / Hain, W / Hüttmann, A / Januschek, F / Kahle, B / Katkov, I I / Klein, U / Kötz, U / Kowalski, H / Lobodzinska, E / Löhr, B / Mankel, R / Melzer-Pellmann, I-A / Miglioranzi, S / Montanari, A / Namsoo, T / Notz, D / Parenti, A / Rinaldi, L / Roloff, P / Rubinsky, I / Santamarta, R / Schneekloth, U / Spiridonov, A / Szuba, D / Szuba, J / Theedt, T / Wolf, G / Wrona, K / Yagües Molina, A G / Youngman, C / Zeuner, W / Drugakov, V / Lohmann, W / Schlenstedt, S / Barbagli, G / Gallo, E / Pelfer, P G / Bamberger, A / Dobur, D / Karstens, F / Vlasov, N N / Bussey, P J / Doyle, A T / Dunne, W / Forrest, M / Rosin, M / Saxon, D H / Skillicorn, I O / Gialas, I / Papageorgiu, K / Holm, U / Klanner, R / Lohrmann, E / Schleper, P / Schörner-Sadenius, T / Sztuk, J / Stadie, H / Turcato, M / Foudas, C / Fry, C / Long, K R / Tapper, A D / Matsumoto, T / Nagano, K / Tokushuku, K / Yamada, S / Yamazaki, Y / Barakbaev, A N / Boos, E G / Pokrovskiy, N S / Zhautykov, B O / Aushev, V / Borodin, M / Kadenko, I / Kozulia, A / Libov, V / Lisovyi, M / Lontkovskyi, D / Makarenko, I / Sorokin, Iu / Verbytskyi, A / Volynets, O / Son, D / de Favereau, J / Piotrzkowski, K / Barreiro, F / Glasman, C / Jimenez, M / Labarga, L / Del Peso, J / Ron, E / Soares, M / Terrón, J / Zambrana, M / Corriveau, F / Liu, C / Schwartz, J / Walsh, R / Zhou, C / Tsurugai, T / Antonov, A / Dolgoshein, B A / Gladkov, D / Sosnovtsev, V / Stifutkin, A / Suchkov, S / Dementiev, R K / Ermolov, P F / Gladilin, L K / Golubkov, Yu A / Khein, L A / Korzhavina, I A / Kuzmin, V A / Levchenko, B B / Lukina, O Yu / Proskuryakov, A S / Shcheglova, L M / Zotkin, D S / Abt, I / Caldwell, A / Kollar, D / Reisert, B / Schmidke, W B / Grigorescu, G / Keramidas, A / Koffeman, E / Kooijman, P / Pellegrino, A / Tiecke, H / Vázquez, M / Wiggers, L / Brümmer, N / Bylsma, B / Durkin, L S / Lee, A / Ling, T Y / Allfrey, P D / Bell, M A / Cooper-Sarkar, A M / Devenish, R C E / Ferrando, J / Foster, B / Korcsak-Gorzo, K / Oliver, K / Robertson, A / Uribe-Estrada, C / Walczak, R / Bertolin, A / Dal Corso, F / Dusini, S / Longhin, A / Stanco, L / Bellan, P / Brugnera, R / Carlin, R / Garfagnini, A / Limentani, S / Oh, B Y / Raval, A / Ukleja, J / Whitmore, J J / Iga, Y / D'Agostini, G / Marini, G / Nigro, A / Cole, J E / Hart, J C / Abramowicz, H / Ingbir, R / Kananov, S / Levy, A / Stern, A / Kuze, M / Maeda, J / Hori, R / Kagawa, S / Okazaki, N / Shimizu, S / Tawara, T / Hamatsu, R / Kaji, H / Kitamura, S / Ota, O / Ri, Y D / Costa, M / Ferrero, M I / Monaco, V / Sacchi, R / Solano, A / Arneodo, M / Ruspa, M / Fourletov, S / Martin, J F / Stewart, T P / Boutle, S K / Butterworth, J M / Gwenlan, C / Jones, T W / Loizides, J H / Wing, M / Brzozowska, B / Ciborowski, J / Grzelak, G / Kulinski, P / Luzniak, P / Malka, J / Nowak, R J / Pawlak, J M / Tymieniecka, T / Ukleja, A / Zarnecki, A F / Adamus, M / Plucinski, P / Eisenberg, Y / Hochman, D / Karshon, U / Brownson, E / Danielson, T / Everett, A / Kçira, D / Reeder, D D / Ryan, P / Savin, A A / Smith, W H / Wolfe, H / Bhadra, S / Catterall, C D / Cui, Y / Hartner, G / Menary, S / Noor, U / Standage, J / Whyte, J

    Physical review letters

    2008  Volume 101, Issue 11, Page(s) 112003

    Abstract: Inclusive K_{S};{0}K_{S};{0} production in ep collisions at the DESY ep collider HERA was studied with the ZEUS detector using an integrated luminosity of 0.5 fb;{-1}. Enhancements in the mass spectrum were observed and are attributed to the production ... ...

    Abstract Inclusive K_{S};{0}K_{S};{0} production in ep collisions at the DESY ep collider HERA was studied with the ZEUS detector using an integrated luminosity of 0.5 fb;{-1}. Enhancements in the mass spectrum were observed and are attributed to the production of f_{2}(1270)/a_{2};{0}(1320), f_{2};{'}(1525) and f_{0}(1710). Masses and widths were obtained using a fit which takes into account theoretical predictions based on SU(3) symmetry arguments, and are consistent with the Particle Data Group values. The f_{0}(1710) state, which has a mass consistent with a glueball candidate, was observed with a statistical significance of 5 standard deviations. However, if this state is the same as that seen in gammagamma-->K_{S};{0}K_{S};{0}, it is unlikely to be a pure glueball state.
    Language English
    Publishing date 2008-09-12
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.101.112003
    Database MEDical Literature Analysis and Retrieval System OnLINE

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