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Combination and QCD analysis of charm production cross section measurements in deep-inelastic ep scattering at HERA

EUROPEAN PHYSICAL JOURNAL C 73:2 (2013) ARTN 2311

Authors:

H Abramowicz, I Abt, L Adamczyk, M Adamus, R Aggarwal, C Alexa, V Andreev, S Antonelli, P Antonioli, A Antonov, M Arneodo, O Arslan, V Aushev, Y Aushev, O Bachynska, A Baghdasaryan, S Baghdasaryan, A Bamberger, AN Barakbaev, G Barbagli, G Bari, F Barreiro, W Bartel, N Bartosik, D Bartsch, M Basile, K Begzsuren, O Behnke, J Behr, U Behrens, L Bellagamba, A Belousov, P Belov, A Bertolin, S Bhadra, M Bindi, C Blohm, V Bokhonov, K Bondarenko, EG Boos, K Borras, D Boscherini, D Bot, V Boudry, I Bozovic-Jelisavcic, T Bold, N Bruemmer, J Bracinik, G Brandt, M Brinkmann, V Brisson, D Britzger, I Brock, E Brownson, R Brugnera, A Bruni, G Bruni, B Brzozowska, A Bunyatyan, PJ Bussey, A Bylinkin, B Bylsma, L Bystritskaya, A Caldwell, AJ Campbell, KB Cantun Avila, M Capua, R Carlin, CD Catterall, F Ceccopieri, K Cerny, S Chekanov, V Chekelian, J Chwastowski, J Ciborowski, R Ciesielski, L Cifarelli, F Cindolo, A Contin, JG Contreras, AM Cooper-Sarkar, N Coppola, M Corradi, F Corriveau, M Costa, J Cvach, G D'Agostini, JB Dainton, F Dal Corso, K Daum, J Delvax, RK Dementiev, M Derrick, RCE Devenish, S De Pasquale, EA De Wolf, J del Peso, C Diaconu, M Dobre, D Dobur, V Dodonov, BA Dolgoshein, G Dolinska, A Dossanov, AT Doyle, V Drugakov, LS Durkin, S Dusini, G Eckerlin, S Egli, Y Eisenberg, E Elsen, PF Ermolov, A Eskreys, S Fang, L Favart, S Fazio, A Fedotov, R Felst, J Feltesse, J Ferencei, J Ferrando, MI Ferrero, J Figiel, D-J Fischer, M Fleischer, A Fomenko, B Foster, E Gabathuler, G Gach, A Galas, E Gallo, A Garfagnini, J Gayler, A Geiser, S Ghazaryan, I Gialas, A Gizhko, LK Gladilin, D Gladkov, C Glasman, A Glazov, L Goerlich, N Gogitidze, O Gogota, YA Golubkov, P Goettlicher, M Gouzevitch, C Grab, I Grabowska-Bold, A Grebenyuk, J Grebenyuk, T Greenshaw, I Gregor, G Grigorescu, G Grindhammer, G Grzelak, O Gueta, M Guzik, C Gwenlan, A Huettmann, T Haas, S Habib, D Haidt, W Hain, R Hamatsu, JC Hart, H Hartmann, G Hartner, RCW Henderson, E Hennekemper, H Henschel, M Herbst, G Herrera, M Hildebrandt, E Hilger, KH Hiller, J Hladky, D Hochman, D Hoffmann, R Hori, R Horisberger, T Hreus, F Huber, ZA Ibrahim, Y Iga, R Ingbir, M Ishitsuka, M Jacquet, H-P Jakob, X Janssen, F Januschek, TW Jones, L Jonsson, M Juengst, AW Jung, H Jung, I Kadenko, B Kahle, S Kananov, T Kanno, M Kapichine, U Karshon, F Karstens, II Katkov, P Kaur, M Kaur, IR Kenyon, A Keramidas, LA Khein, C Kiesling, JY Kim, D Kisielewska, S Kitamura, R Klanner, M Klein, U Klein, C Kleinwort, U Koetz, E Koffeman, R Kogler, N Kondrashova, O Kononenko, P Kooijman, I Korol, IA Korzhavina, P Kostka, A Kotanski, H Kowalski, M Kraemer, J Kretzschmar, K Krueger, O Kuprash, M Kuze, MPJ Landon, W Lange, G Lastovicka-Medin, P Laycock, A Lebedev, A Lee, V Lendermann, BB Levchenko, S Levonian, A Levy, V Libov, S Limentani, TY Ling, K Lipka, M Lisovyi, B List, J List, E Lobodzinska, B Lobodzinski, B Loehr, W Lohmann, E Lohrmann, KR Long, A Longhin, D Lontkovskyi, R Lopez-Fernandez, V Lubimov, OY Lukina, J Maeda, S Magill, I Makarenko, E Malinovski, J Malka, R Mankel, A Margotti, G Marini, JF Martin, H-U Martyn, A Mastroberardino, MCK Mattingly, SJ Maxfield, A Mehta, I-A Melzer-Pellmann, S Mergelmeyer, AB Meyer, H Meyer, J Meyer, S Miglioranzi, S Mikocki, I Milcewicz-Mika, F Mohamad Idris, V Monaco, A Montanari, F Moreau, A Morozov, JV Morris, JD Morris, K Mujkic, K Mueller, B Musgrave, K Nagano, T Namsoo, R Nania, T Naumann, PR Newman, C Niebuhr, A Nigro, D Nikitin, Y Ning, T Nobe, D Notz, G Nowak, K Nowak, RJ Nowak, AE Nuncio-Quiroz, BY Oh, N Okazaki, K Olkiewicz, JE Olsson, Y Onishchuk, D Ozerov, P Pahl, V Palichik, M Pandurovic, K Papageorgiu, A Parenti, C Pascaud, GD Patel, E Paul, JM Pawlak, B Pawlik, PG Pelfer, A Pellegrino, E Perez, W Perlanski, H Perrey, A Petrukhin, I Picuric, K Piotrzkowski, H Pirumov, D Pitzl, R Placakyte, P Plucinski, B Pokorny, NS Pokrovskiy, R Polifka, A Polini, B Povh, AS Proskuryakov, M Przybycien, V Radescu, N Raicevic, A Raval, T Ravdandorj, DD Reeder, P Reimer, B Reisert, Z Ren, J Repond, YD Ri, E Rizvi, A Robertson, P Robmann, P Roloff, R Roosen, A Rostovtsev, M Rotaru, I Rubinsky, JE Ruiz Tabasco, S Rusakov, M Ruspa, R Sacchi, D Salek, U Samson, DPC Sankey, G Sartorelli, M Sauter, E Sauvan, AA Savin, DH Saxon, M Schioppa, S Schlenstedt, P Schleper, WB Schmidke, S Schmitt, U Schneekloth, L Schoeffel, V Schoenberg, A Schoening, T Schoerner-Sadenius, H-C Schultz-Coulon, J Schwartz, F Sciulli, F Sefkow, LM Shcheglova, R Shehzadi, S Shimizu, S Shushkevich, I Singh, IO Skillicorn, W Slominski, WH Smith, V Sola, A Solano, Y Soloviev, D Son, P Sopicki, V Sosnovtsev, D South, V Spaskov, A Specka, A Spiridonov, H Stadie, L Stanco, Z Staykova, M Steder, N Stefaniuk, B Stella, A Stern, TP Stewart, A Stifutkin, G Stoicea, P Stopa, U Straumann, S Suchkov, G Susinno, L Suszycki, T Sykora, J Sztuk-Dambietz, J Szuba, D Szuba, AD Tapper, E Tassi, J Terron, T Theedt, PD Thompson, H Tiecke, K Tokushuku, J Tomaszewska, TH Tran, D Traynor, P Truoel, V Trusov, I Tsakov, B Tseepeldorj, T Tsurugai, M Turcato, O Turkot, J Turnau, T Tymieniecka, M Vazquez, A Valkarova, C Vallee, P Van Mechelen, Y Vazdik, A Verbytskyi, O Viazlo, NN Vlasov, R Walczak, WAT Wan Abdullah, D Wegener, JJ Whitmore, K Wichmann, L Wiggers, M Wing, M Wlasenko, G Wolf, H Wolfe, K Wrona, E Wuensch, AG Yaguees-Molina, S Yamada, Y Yamazaki, R Yoshida, C Youngman, O Zabiegalov, J Zacek, J Zalesak, O Zenaiev, W Zeuner, Z Zhang, BO Zhautykov, N Zhmak, A Zichichi, R Zlebcik, H Zohrabyan, Z Zolkapli, F Zomer, DS Zotkin, AF Zarnecki
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Laserwire: A high resolution non-invasive beam profiling diagnostic

Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment (2013)

Authors:

L Corner, R Walczak, A Aryshev, N Terunuma, J Urakawa, GA Blair, ST Boogert, P Karataev, K Kruchinin

Abstract:

A laserwire is a non-invasive, high resolution particle beam size monitor based on Compton scattering that is required for future planned colliders and can also be used to estimate the size of the source in wakefield acceleration experiments. We present recent results from the high resolution laserwire transverse electron beam diagnostic installed at the Accelerator Test Facility 2 (ATF2) electron accelerator at KEK in Japan. Full characterisation of the propagation of the 150 mJ, 77 ps laser beam is used to deconvolve the transverse laserwire profile demonstrating the successful measurement of 1 μm scale vertical electron beam sizes, even with extreme aspect ratios. We also present progress in the development of high energy photonic crystal fibre based laser systems for laserwire measurements at megahertz repetition rates, suitable for intra-train scanning for planned accelerators such as the International Linear Collider, or beam size measurement in laser or particle driven plasma accelerators. © 2013 Elsevier B.V. All rights reserved.
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Longitudinal electron bunch profile reconstruction by performing phase retrieval on coherent transition radiation spectra

PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS 16:4 (2013) ARTN 040701

Authors:

SI Bajlekov, M Heigoldt, A Popp, J Wenz, K Khrennikov, S Karsch, SM Hooker
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Electron acceleration driven in plasma channels at the Astra-Gemini laser facility

AIP Conference Proceedings 1507 (2012) 193-198

Authors:

PA Walker, N Bourgeois, W Rittershofer, J Cowley, N Kajumba, AR Maier, J Wenz, CM Werle, DR Symes, PP Rajeev, SJ Hawkes, O Chekhlov, CJ Hooker, B Parry, Y Tang, VA Marshall, S Karsch, F Grüner, SM Hooker

Abstract:

The generation of GeV-scale electron beams in the plasma channel formed in a gas-filled capillary discharge waveguide is investigated. Electron beams with energies above 900 MeV and with root-mean-square divergence of 3.5 mrad are observed for plasma densities of 2.15 × 1018 cm-3 and a peak input laser power of only 55 TW. The variation of the electron energy with the plasma density is measured and found to exhibit a maximum at plasma densities for which the dephasing length approximately matches the length of the plasma channel. Injection and acceleration of electrons at the relatively low plasma density of 3.2 × 1017 cm-3 is observed. The energy spectra of the generated electron beams are shown to exhibit good shot-to-shot reproducibility, with the observed variations attributable to the measured shot-to-shot jitter of the laser parameters. Two methods for correcting for the effects on the measured energy spectrum of off-axis electron beam propagation are investigated. © 2012 American Institute of Physics.
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Multiple pulse resonantly enhanced laser plasma wakefield acceleration

AIP Conference Proceedings 1507 (2012) 872-873

Authors:

L Corner, R Walczak, LJ Nevay, S Dann, SM Hooker, N Bourgeois, J Cowley

Abstract:

We present an outline of experiments being conducted at Oxford University on multiple-pulse, resonantly-enhanced laser plasma wakefield acceleration. This method of laser plasma acceleration uses trains of optimally spaced low energy short pulses to drive plasma oscillations and may enable laser plasma accelerators to be driven by compact and efficient fibre laser sources operating at high repetition rates. © 2012 American Institute of Physics.
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