B. King - Brookhaven National Laboratory

B. King
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B. King
Brookhaven National Laboratory

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High Energy Physics - Experiment (18)
High Energy Physics - Phenomenology (17)
Physics - Accelerator Physics (10)
Physics - Optics (6)
Physics - Plasma Physics (6)
Quantum Physics (6)
Physics - Instrumentation and Detectors (2)
Physics - Classical Physics (2)
High Energy Physics - Theory (2)
Physics - Physics and Society (1)
Physics - Atomic Physics (1)
Physics - Computational Physics (1)
Computer Science - Computation and Language (1)

Publications Authored By B. King

We derive focused laser pulse solutions to the electromagnetic wave equation in vacuum. After reproducing beam and pulse expressions for the well-known paraxial Gaussian and axicon cases, we apply the method to analyse a laser beam with Lorentzian transverse momentum distribution. Whilst a paraxial approach has some success close to the focal axis and within a Rayleigh range of the focal spot, we find that it incorrectly predicts the transverse fall-off typical of a Lorentzian. Read More

We consider the dynamics of a charged particle (e.g., an electron) oscillating in a laser field in flat spacetime and describe it in terms of the variable mass metric. Read More

Authors: MicroBooNE Collaboration, R. Acciarri, C. Adams, R. An, A. Aparicio, S. Aponte, J. Asaadi, M. Auger, N. Ayoub, L. Bagby, B. Baller, R. Barger, G. Barr, M. Bass, F. Bay, K. Biery, M. Bishai, A. Blake, V. Bocean, D. Boehnlein, V. D. Bogert, T. Bolton, L. Bugel, C. Callahan, L. Camilleri, D. Caratelli, B. Carls, R. Castillo Fernandez, F. Cavanna, S. Chappa, H. Chen, K. Chen, C. Y. Chi, C. S. Chiu, E. Church, D. Cianci, G. H. Collin, J. M. Conrad, M. Convery, J. Cornele, P. Cowan, J. I. Crespo-Anadon, G. Crutcher, C. Darve, R. Davis, M. Del Tutto, D. Devitt, S. Duffin, S. Dytman, B. Eberly, A. Ereditato, D. Erickson, L. Escudero Sanchez, J. Esquivel, S. Farooq, J. Farrell, D. Featherston, B. T. Fleming, W. Foreman, A. P. Furmanski, V. Genty, M. Geynisman, D. Goeldi, B. Goff, S. Gollapinni, N. Graf, E. Gramellini, J. Green, A. Greene, H. Greenlee, T. Griffin, R. Grosso, R. Guenette, A. Hackenburg, R. Haenni, P. Hamilton, P. Healey, O. Hen, E. Henderson, J. Hewes, C. Hill, K. Hill, L. Himes, J. Ho, G. Horton-Smith, D. Huffman, C. M. Ignarra, C. James, E. James, J. Jan de Vries, W. Jaskierny, C. M. Jen, L. Jiang, B. Johnson, M. Johnson, R. A. Johnson, B. J. P. Jones, J. Joshi, H. Jostlein, D. Kaleko, L. N. Kalousis, G. Karagiorgi, T. Katori, P. Kellogg, W. Ketchum, J. Kilmer, B. King, B. Kirby, M. Kirby, E. Klein, T. Kobilarcik, I. Kreslo, R. Krull, R. Kubinski, G. Lange, F. Lanni, A. Lathrop, A. Laube, W. M. Lee, Y. Li, D. Lissauer, A. Lister, B. R. Littlejohn, S. Lockwitz, D. Lorca, W. C. Louis, G. Lukhanin, M. Luethi, B. Lundberg, X. Luo, G. Mahler, I. Majoros, D. Makowiecki, A. Marchionni, C. Mariani, D. Markley, J. Marshall, D. A. Martinez Caicedo, K. T. McDonald, D. McKee, A. McLean, J. Mead, V. Meddage, T. Miceli, G. B. Mills, W. Miner, J. Moon, M. Mooney, C. D. Moore, Z. Moss, J. Mousseau, R. Murrells, D. Naples, P. Nienaber, B. Norris, N. Norton, J. Nowak, M. OBoyle, T. Olszanowski, O. Palamara, V. Paolone, V. Papavassiliou, S. F. Pate, Z. Pavlovic, R. Pelkey, M. Phipps, S. Pordes, D. Porzio, G. Pulliam, X. Qian, J. L. Raaf, V. Radeka, A. Rafique, R. A Rameika, B. Rebel, R. Rechenmacher, S. Rescia, L. Rochester, C. Rudolf von Rohr, A. Ruga, B. Russell, R. Sanders, W. R. Sands III, M. Sarychev, D. W. Schmitz, A. Schukraft, R. Scott, W. Seligman, M. H. Shaevitz, M. Shoun, J. Sinclair, W. Sippach, T. Smidt, A. Smith, E. L. Snider, M. Soderberg, M. Solano-Gonzalez, S. Soldner-Rembold, S. R. Soleti, J. Sondericker, P. Spentzouris, J. Spitz, J. St. John, T. Strauss, K. Sutton, A. M. Szelc, K. Taheri, N. Tagg, K. Tatum, J. Teng, K. Terao, M. Thomson, C. Thorn, J. Tillman, M. Toups, Y. T. Tsai, S. Tufanli, T. Usher, M. Utes, R. G. Van de Water, C. Vendetta, S. Vergani, E. Voirin, J. Voirin, B. Viren, P. Watkins, M. Weber, T. Wester, J. Weston, D. A. Wickremasinghe, S. Wolbers, T. Wongjirad, K. Woodruff, K. C. Wu, T. Yang, B. Yu, G. P. Zeller, J. Zennamo, C. Zhang, M. Zuckerbrot

This paper describes the design and construction of the MicroBooNE liquid argon time projection chamber and associated systems. MicroBooNE is the first phase of the Short Baseline Neutrino program, located at Fermilab, and will utilize the capabilities of liquid argon detectors to examine a rich assortment of physics topics. In this document details of design specifications, assembly procedures, and acceptance tests are reported. Read More

Whether monochromatic, pulsed, or even constant and crossed, the field used to describe the interaction of charged fermions with an intense laser beam is mainly assumed to be of plane-wave form. We consider a simple extension to plane-wave fields and consider a scalar particle in a non-lightlike, univariate and transverse propagating electromagnetic wave. The existence of some known exact solutions in this case allows us to analyse various proposed approximations in the literature as well as the plane wave model. Read More

We consider a scalar particle in a background formed by two counter-propagating plane waves. Two cases are studied: i) dynamics at a magnetic node and ii) zero initial transverse canonical momentum. The Lorentz and Klein-Gordon equations are solved for these cases and approximations analysed. Read More

We investigate deviations from the plane wave model in the interaction of charged particles with strong electromagnetic fields. A general result is that integrability of the dynamics is lost when going from lightlike to timelike or spacelike field dependence. For a special scenario in the classical regime we show how the radiation spectrum in the spacelike (undulator) case becomes well-approximated by the plane wave model in the high energy limit, despite the two systems being Lorentz inequivalent. Read More

This paper presents a comparison of classification methods for linguistic typology for the purpose of expanding an extensive, but sparse language resource: the World Atlas of Language Structures (WALS) (Dryer and Haspelmath, 2013). We experimented with a variety of regression and nearest-neighbor methods for use in classification over a set of 325 languages and six syntactic rules drawn from WALS. To classify each rule, we consider the typological features of the other five rules; linguistic features extracted from a word-aligned Bible in each language; and genealogical features (genus and family) of each language. Read More

Real photon-photon scattering is a long-predicted phenomenon that is being searched for in experiment in the form of a birefringent vacuum at optical and X-ray frequencies. We present results of calculations and numerical simulations for a scenario to measure this effect using multi-MeV photons generated in the collision of electrons with a laser pulse. We find that the birefringence of the vacuum should be measurable using experimental parameters attainable in the near future. Read More

When exposed to intense electromagnetic fields, the quantum vacuum is expected to exhibit properties of a polarisable medium akin to a weakly nonlinear dielectric material. Various schemes have been proposed to measure such vacuum polarisation effects using a combination of high power lasers. Motivated by several planned experiments, we provide an overview of experimental signatures that have been suggested to confirm this prediction of quantum electrodynamics of real photon-photon scattering. Read More

Electrodynamics becomes nonlinear and permits the self-interaction of fields when the quantised nature of vacuum states is taken into account. The effect on a plane probe pulse propagating through a stronger constant crossed background is calculated using numerical simulation and by analytically solving the corresponding wave equation. The electromagnetic shock resulting from vacuum high harmonic generation is investigated and a nonlinear shock parameter identified. Read More

A new experiment is described to detect a permanent electric dipole moment of the proton with a sensitivity of $10^{-29}e\cdot$cm by using polarized "magic" momentum $0.7$~GeV/c protons in an all-electric storage ring. Systematic errors relevant to the experiment are discussed and techniques to address them are presented. Read More

Authors: J. Grange, V. Guarino, P. Winter, K. Wood, H. Zhao, R. M. Carey, D. Gastler, E. Hazen, N. Kinnaird, J. P. Miller, J. Mott, B. L. Roberts, J. Benante, J. Crnkovic, W. M. Morse, H. Sayed, V. Tishchenko, V. P. Druzhinin, B. I. Khazin, I. A. Koop, I. Logashenko, Y. M. Shatunov, E. Solodov, M. Korostelev, D. Newton, A. Wolski, R. Bjorkquist, N. Eggert, A. Frankenthal, L. Gibbons, S. Kim, A. Mikhailichenko, Y. Orlov, D. Rubin, D. Sweigart, D. Allspach, G. Annala, E. Barzi, K. Bourland, G. Brown, B. C. K. Casey, S. Chappa, M. E. Convery, B. Drendel, H. Friedsam, T. Gadfort, K. Hardin, S. Hawke, S. Hayes, W. Jaskierny, C. Johnstone, J. Johnstone, V. Kashikhin, C. Kendziora, B. Kiburg, A. Klebaner, I. Kourbanis, J. Kyle, N. Larson, A. Leveling, A. L. Lyon, D. Markley, D. McArthur, K. W. Merritt, N. Mokhov, J. P. Morgan, H. Nguyen, J-F. Ostiguy, A. Para, C. C. Polly M. Popovic, E. Ramberg, M. Rominsky, D. Schoo, R. Schultz, D. Still, A. K. Soha, S. Strigonov, G. Tassotto, D. Turrioni, E. Villegas, E. Voirin, G. Velev, D. Wolff, C. Worel, J-Y. Wu, R. Zifko, K. Jungmann, C. J. G. Onderwater, P. T. Debevec, S. Ganguly, M. Kasten, S. Leo, K. Pitts, C. Schlesier, M. Gaisser, S. Haciomeroglu, Y-I. Kim, S. Lee, M-J Lee, Y. K. Semertzidis, K. Giovanetti, V. A. Baranov, V. N. Duginov, N. V. Khomutov, V. A. Krylov, N. A. Kuchinskiy, V. P. Volnykh, C. Crawford, R. Fatemi, W. P. Gohn, T. P. Gorringe, W. Korsch, B. Plaster, A. Anastasi, D. Babusci, S. Dabagov, C. Ferrari, A. Fioretti, C. Gabbanini, D. Hampai, A. Palladino, G. Venanzoni, T. Bowcock, J. Carroll, B. King, S. Maxfield, K. McCormick, A. Smith, T. Teubner, M. Whitley, M. Wormald, R. Chislett, S. Kilani, M. Lancaster, E. Motuk, T. Stuttard, M. Warren, D. Flay, D. Kawall, Z. Meadows, T. Chupp, R. Raymond, A. Tewlsey-Booth, M. J. Syphers, D. Tarazona, C. Ankenbrandt, M. A. Cummings, R. P. Johnson, C. Yoshikawa, S. Catalonotti, R. Di Stefano, M. Iacovacci, S. Mastroianni, S. Chattopadhyay, M. Eads, M. Fortner, D. Hedin, N. Pohlman, A. de Gouvea, H. Schellman, L. Welty-Rieger, T. Itahashi, Y. Kuno, K. Yai, F. Azfar, S. Henry, G. D. Alkhazov, V. L. Golovtsov, P. V. Neustroev, L. N. Uvarov, A. A. Vasilyev, A. A. Vorobyov, M. B. Zhalov, L. Cerrito, F. Gray, G. Di Sciascio, D. Moricciani, C. Fu, X. Ji, L. Li, H. Yang, D. Stöckinger, G. Cantatore, D. Cauz, M. Karuza, G. Pauletta, L. Santi, S. Baeßler, M. Bychkov, E. Frlez, D. Pocanic, L. P. Alonzi, M. Fertl, A. Fienberg, N. Froemming, A. Garcia, D. W. Hertzog J. Kaspar, P. Kammel, R. Osofsky, M. Smith, E. Swanson, T. van Wechel, K. Lynch

The Muon (g-2) Experiment, E989 at Fermilab, will measure the muon anomalous magnetic moment a factor-of-four more precisely than was done in E821 at the Brookhaven National Laboratory AGS. The E821 result appears to be greater than the Standard-Model prediction by more than three standard deviations. When combined with expected improvement in the Standard-Model hadronic contributions, E989 should be able to determine definitively whether or not the E821 result is evidence for physics beyond the Standard Model. Read More

Two-photon emission of an electron in an electromagnetic plane wave of vanishing frequency is calculated. The unpolarised probability is split into a two-step process, which is shown to be exactly equal to an integration over polarised subprocesses, and a one-step process, which is found to be dominant over the formation length. The assumptions of neglecting spin and simultaneous emission, commonly used in numerical simulations, are discussed in light of these results. Read More

We test current numerical implementations of laser-matter interactions by comparison with exact analytical results. Focussing on photon emission processes, it is found that the numerics accurately reproduce analytical emission spectra in all considered regimes, except for the harmonic structures often singled out as the most significant high intensity/multi-photon effects. We find that this discrepancy originates in the use of the locally constant field approximation. Read More

When two electromagnetic fields counterpropagate, they are modified due to mutual interaction via the polarised virtual electron-positron states of the vacuum. By studying how photon-photon scattering effects such as birefringence and four-wave mixing evolve as the fields pass through one another, we find a significant increase during overlap. The results have particular relevance for calculations based on a constant field background. Read More

We isolate the two-step mechanism involving a real intermediate photon from the one-step mechanism involving a virtual photon for the trident process in a constant crossed field. The two-step process is shown to agree with an integration over polarised sub-processes. At low to moderate quantum non-linearity parameter, the one-step process is found to be suppressed. Read More

An electromagnetic pair-creation cascade seeded by an electron or a photon in an intense plane wave interacts in a complicated way with the external field. Many simulations neglect the vector nature of photons by including their interaction using unpolarised cross-sections. After deriving rates for the tree-level processes of nonlinear Compton scattering and pair creation with an arbitrary linearly-polarised photon in a constant-crossed field, we present results of numerical simulations that include the photon's vector nature. Read More

The influence of the strong laser-driven vacuum on a propagating electromagnetic probe wave has been studied in detail. We investigate two scenarios comprising a focused probe laser beam passing through a region of vacuum polarised by an ultra-intense laser field. By splitting this strong field into two, separated, monochromatic Gaussian pulses counter-propagating in a plane perpendicular to the probe field axis, we demonstrate a leading order light-by-light diffraction effect that generates an interference pattern reminiscent of the classic double-slit experiment. Read More

Double-slits provide incoming photons with a choice. Those that survive the passage have chosen from two possible paths which interfere to distribute them in a wave-like manner. Such wave-particle duality continues to be challenged and investigated in a broad range of disciplines with electrons, neutrons, helium atoms, C60 fullerenes, Bose-Einstein condensates and biological molecules. Read More

A scenario for measuring the predicted processes of vacuum elastic and inelastic photon-photon scattering with modern lasers is investigated. Numbers of measurable scattered photons are calculated for the collision of two, Gaussian-focused, pulsed lasers. We show that a single 10PW optical laser beam split into two counter-propagating pulses is sufficient for measuring the elastic process. Read More

Authors: The ATLAS Collaboration, G. Aad, E. Abat, B. Abbott, J. Abdallah, A. A. Abdelalim, A. Abdesselam, O. Abdinov, B. Abi, M. Abolins, H. Abramowicz, B. S. Acharya, D. L. Adams, T. N. Addy, C. Adorisio, P. Adragna, T. Adye, J. A. Aguilar-Saavedra, M. Aharrouche, S. P. Ahlen, F. Ahles, A. Ahmad, H. Ahmed, G. Aielli, T. Akdogan, T. P. A. Akesson, G. Akimoto, M. S. Alam, M. A. Alam, J. Albert, S. Albrand, M. Aleksa, I. N. Aleksandrov, F. Alessandria, C. Alexa, G. Alexander, G. Alexandre, T. Alexopoulos, M. Alhroob, G. Alimonti, J. Alison, M. Aliyev, P. P. Allport, S. E. Allwood-Spiers, A. Aloisio, R. Alon, A. Alonso, J. Alonso, M. G. Alviggi, K. Amako, P. Amaral, C. Amelung, V. V. Ammosov, A. Amorim, G. Amoros, N. Amram, C. Anastopoulos, C. F. Anders, K. J. Anderson, A. Andreazza, V. Andrei, M-L. Andrieux, X. S. Anduaga, F. Anghinolfi, A. Antonaki, M. Antonelli, S. Antonelli, B. Antunovic, F. A. Anulli, G. Arabidze, I. Aracena, Y. Arai, A. T. H. Arce, J. P. Archambault, S. Arfaoui, J-F. Arguin, T. Argyropoulos, E. Arik, M. Arik, A. J. Armbruster, O. Arnaez, C. Arnault, A. Artamonov, D. Arutinov, M. Asai, S. Asai, S. Ask, B. Asman, D. Asner, L. Asquith, K. Assamagan, A. Astbury, A. Astvatsatourov, T. Atkinson, G. Atoian, B. Auerbach, E. Auge, K. Augsten, M. A. Aurousseau, N. Austin, G. Avolio, R. Avramidou, A. Axen, C. Ay, G. Azuelos, Y. Azuma, M. A. Baak, G. Baccaglioni, C. Bacci, H. Bachacou, K. Bachas, M. Backes, E. Badescu, P. Bagnaia, Y. Bai, D. C. Bailey, J. T. Baines, O. K. Baker, F. Baltasar Dos Santos Pedrosa, E. Banas, S. Banerjee, D. Banfi, A. Bangert, V. Bansal, S. P. Baranov, S. Baranov, A. Barashkou, T. B. Barber, E. L. Barberio, D. Barberis, M. B. Barbero, D. Y. Bardin, T. Barillari, M. Barisonzi, T. Barklow, N. B. Barlow, B. M. Barnett, R. M. Barnett, S. Baron, A. Baroncelli, A. J. Barr, F. Barreiro, J. Barreiro Guimaraes da Costa, P. Barrillon, R. Bartoldus, D. Bartsch, J. Bastos, R. L. Bates, J. R. Batley, A. Battaglia, M. Battistin, F. Bauer, M. Bazalova, B. Beare, P. H. Beauchemin, R. B. Beccherle, N. Becerici, P. Bechtle, G. A. Beck, H. P. Beck, M. Beckingham, K. H. Becks, I. Bedajanek, A. J. Beddall, A. Beddall, P. Bednar, V. A. Bednyakov, C. Bee, S. Behar Harpaz, P. K. Behera, M. Beimforde, C. Belanger-Champagne, P. J. Bell, W. H. Bell, G. Bella, L. Bellagamba, F. Bellina, M. Bellomo, A. Belloni, K. Belotskiy, O. Beltramello, S. Ben Ami, O. Benary, D. Benchekroun, M. Bendel, B. H. Benedict, N. Benekos, Y. Benhammou, G. P. Benincasa, D. P. Benjamin, M. Benoit, J. R. Bensinger, K. Benslama, S. Bentvelsen, M. Beretta, D. Berge, E. Bergeaas Kuutmann, N. Berger, F. Berghaus, E. Berglund, J. Beringer, K. Bernardet, P. Bernat, R. Bernhard, C. Bernius, T. Berry, A. Bertin, N. Besson, S. Bethke, R. M. Bianchi, M. Bianco, O. Biebel, J. Biesiada, M. Biglietti, H. Bilokon, S. Binet, A. Bingul, C. Bini, C. Biscarat, M. Bischofberger, U. Bitenc, K. M. Black, R. E. Blair, G. Blanchot, C. Blocker, J. Blocki, A. Blondel, W. Blum, U. Blumenschein, C. Boaretto, G. J. Bobbink, A. Bocci, B. Bodine, J. Boek, N. Boelaert, S. Boeser, J. A. Bogaerts, A. Bogouch, C. Bohm, J. Bohm, V. Boisvert, T. Bold, V. Boldea, V. G. Bondarenko, M. Bondioli, M. Boonekamp, C. N. Booth, P. S. L. Booth, J. R. A. Booth, A. Borisov, G. Borissov, I. Borjanovic, S. Borroni, K. Bos, D. Boscherini, M. Bosman, M. Bosteels, H. Boterenbrood, J. Bouchami, J. Boudreau, E. V. Bouhova-Thacker, C. Boulahouache, C. Bourdarios, J. Boyd, I. R. Boyko, A. Braem, P. Branchini, G. W. Brandenburg, A. Brandt, O. Brandt, U. Bratzler, J. E. Brau, H. M. Braun, B. Brelier, J. Bremer, R. Brenner, S. Bressler, D. Breton, N. D. Brett, D. Britton, F. M. Brochu, I. Brock, R. Brock, E. Brodet, F. Broggi, G. Brooijmans, W. K. Brooks, E. Brubaker, P. A. Bruckman de Renstrom, D. Bruncko, R. Bruneliere, S. Brunet, A. Bruni, G. Bruni, M. Bruschi, T. Buanes, F. B. Bucci, P. Buchholz, A. G. Buckley, I. A. Budagov, V. Buescher, L. Bugge, F. Bujor, O. Bulekov, M. Bunse, T. Buran, H. Burckhart, S. Burdin, S. Burke, E. Busato, C. P. Buszello, F. Butin, B. Butler, J. M. Butler, C. M. Buttar, J. M. Butterworth, T. Byatt, S. Cabrera Urban, D. Caforio, O. Cakir, P. Calafiura, G. Calderini, R. Calkins, L. P. Caloba, R. Caloi, D. Calvet, P. Camarri, M. Cambiaghi, D. Cameron, F. Campabadal Segura, S. Campana, M. Campanelli, V. Canale, J. Cantero, M. D. M. Capeans Garrido, I. Caprini, M. Caprini, M. Capua, R. Caputo, C. Caramarcu, R. Cardarelli, T. Carli, G. Carlino, L. Carminati, B. Caron, S. Caron, S. Carron Montero, A. A. Carter, J. R. Carter, J. Carvalho, D. Casadei, M. P. Casado, M. Cascella, C. Caso, A. M. Castaneda Hernadez, E. Castaneda Miranda, V. Castillo Gimenez, N. F. Castro, G. Cataldi, A. Catinaccio, J. R. Catmore, A. Cattai, G. Cattani, S. Caughron, D. Cauz, P. Cavalleri, D. Cavalli, M. Cavalli-Sforza, V. Cavasinni, A. Cazzato, F. Ceradini, A. S. Cerqueira, A. Cerri, L. Cerrito, F. Cerutti, S. A. Cetin, F. Cevenini, A. C. Chafaq, D. Chakraborty, J. D. Chapman, J. W. Chapman, E. C. Chareyre, D. G. Charlton, S. C. Chatterjii, S. Cheatham, S. Chekanov, S. V. Chekulaev, G. A. Chelkov, H. Chen, T. Chen, X. Chen, S. Cheng, T. L. Cheng, A. Cheplakov, V. F. Chepurnov, R. Cherkaoui El Moursli, V. Tcherniatine, D. Chesneanu, E. Cheu, S. L. Cheung, L. Chevalier, F. Chevallier, V. Chiarella, G. Chiefari, L. Chikovani, J. T. Childers, A. Chilingarov, G. Chiodini, S. Chouridou, D. Chren, I. A. Christidi, A. Christov, D. Chromek-Burckhart, M. L. Chu, J. Chudoba, G. Ciapetti, A. K. Ciftci, R. Ciftci, V. Cindro, M. D. Ciobotaru, C. Ciocca, A. Ciocio, M. Cirilli, M. Citterio, A. Clark, W. Cleland, J. C. Clemens, B. Clement, C. Clement, D. Clements, Y. Coadou, M. Cobal, A. Coccaro, J. Cochran, S. Coelli, J. Coggeshall, E. Cogneras, C. D. Cojocaru, J. Colas, B. Cole, A. P. Colijn, C. Collard, N. J. Collins, C. Collins-Tooth, J. Collot, G. Colon, R. Coluccia, P. Conde Muino, E. Coniavitis, M. Consonni, S. Constantinescu, C. Conta, F. Conventi, J. Cook, M. Cooke, B. D. Cooper, N. J. Cooper-Smith, K. Copic, T. Cornelissen, M. Corradi, F. C. Corriveau, A. Corso-Radu, A. Cortes-Gonzalez, G. Costa, M. J. Costa, D. Costanzo, T. Costin, D. Cote, R. Coura Torres, L. Courneyea, G. Cowan, C. C. Cowden, B. E. Cox, K. Cranmer, J. Cranshaw, M. Cristinziani, G. Crosetti, R. C. Crupi, S. Crepe-Renaudin, C. -M. Cuciuc, C. Cuenca Almenar, M. Curatolo, C. J. Curtis, P. Cwetanski, Z. Czyczula, S. D'Auria, M. D'Onofrio, A. D'Orazio, A. Da Rocha Gesualdi Mello, P. V. M. Da Silva, C. V. Da Via, W. Dabrowski, T. Dai, C. Dallapiccola, S. J. Dallison, C. H. Daly, M. Dam, H. O. Danielsson, D. Dannheim, V. Dao, G. Darbo, W. D. Davey, T. Davidek, N. Davidson, R. Davidson, A. R. Davison, I. Dawson, J. W. Dawson, R. K. Daya, K. De, R. de Asmundis, S. De Castro, P. E. De Castro Faria Salgado, S. De Cecco, N. De Groot, P. de Jong, E. De La Cruz-Burelo, C. De La Taille, L. De Mora, M. De Oliveira Branco, D. De Pedis, A. De Salvo, U. 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Nikolopoulos, H. Nilsen, P. Nilsson, A. Nisati, R. Nisius, L. J. Nodulman, M. Nomachi, I. Nomidis, H. Nomoto, M. Nordberg, D. Notz, J. Novakova, M. Nozaki, M. Nozicka, A. -E. Nuncio-Quiroz, G. Nunes Hanninger, T. Nunnemann, S. W. O'Neale, D. C. O'Neil, V. O'Shea, F. G. Oakham, H. Oberlack, A. Ochi, S. Odaka, G. A. Odino, H. Ogren, S. H. Oh, T. Ohshima, H. Ohshita, T. Ohsugi, S. Okada, H. Okawa, Y. Okumura, M. Olcese, A. G. Olchevski, M. Oliveira, D. Oliveira Damazio, J. Oliver, E. O. Oliver Garcia, D. Olivito, A. Olszewski, J. Olszowska, C. Omachi, A. Onea, A. Onofre, C. J. Oram, G. Ordonez, M. J. Oreglia, Y. Oren, D. Orestano, I. O. Orlov, R. S. Orr, E. O. Ortega, B. Osculati, C. Osuna, R. Otec, F. Ould-Saada, A. Ouraou, Q. Ouyang, O. K. Oye, V. E. Ozcan, K. Ozone, N. Ozturk, A. Pacheco Pages, S. Padhi, C. Padilla Aranda, E. Paganis, F. Paige, K. Pajchel, A. Pal, S. Palestini, J. Palla, D. Pallin, A. Palma, Y. B. Pan, E. Panagiotopoulou, B. Panes, N. Panikashvili, S. Panitkin, D. Pantea, M. Panuskova, V. Paolone, Th. D. Papadopoulou, W. Park, M. A. Parker, S. Parker, F. Parodi, J. A. Parsons, U. Parzefall, E. Pasqualucci, G. Passardi, A. Passeri, F. Pastore, Fr. Pastore, S. Pataraia, J. R. Pater, S. Patricelli, P. Patwa, T. Pauly, L. S. Peak, M. Pecsy, M. I. Pedraza Morales, S. V. Peleganchuk, H. Peng, R. Pengo, J. Penwell, M. Perantoni, A. Pereira, K. Perez, E. Perez Codina, V. Perez Reale, L. Perini, H. Pernegger, R. Perrino, P. Perrodo, P. Perus, V. D. Peshekhonov, B. A. Petersen, J. Petersen, T. C. Petersen, C. Petridou, E. Petrolo, F. Petrucci, R. Petti, R. Pezoa, M. Pezzetti, B. Pfeifer, A. Phan, A. W. Phillips, G. Piacquadio, M. Piccinini, R. Piegaia, S. Pier, J. E. Pilcher, A. D. Pilkington, J. Pina, J. L. Pinfold, J. Ping, B. Pinto, O. Pirotte, C. Pizio, R. Placakyte, M. Plamondon, W. G. Plano, M. -A. Pleier, A. Poblaguev, F. Podlyski, P. Poffenberger, L. Poggioli, M. Pohl, F. Polci, G. Polesello, A. Policicchio, A. Polini, J. P. Poll, V. Polychronakos, D. M. Pomarede, K. Pommes, L. Pontecorvo, B. G. Pope, R. Popescu, D. S. Popovic, A. Poppleton, J. Popule, X. Portell Bueso, R. Porter, G. E. Pospelov, P. Pospichal, S. Pospisil, M. Potekhin, I. N. Potrap, C. J. Potter, C. T. Potter, K. P. Potter, G. Poulard, J. Poveda, R. Prabhu, P. Pralavorio, S. Prasad, R. Pravahan, T. Preda, K. Pretzl, L. Pribyl, D. Price, L. E. Price, M. J. Price, P. M. Prichard, D. Prieur, M. Primavera, K. Prokofiev, F. Prokoshin, S. Protopopescu, J. Proudfoot, H. Przysiezniak, C. Puigdengoles, J. Purdham, M. Purohit, P. Puzo, Y. Pylypchenko, M. T. Perez Garcia-Estan, M. Qi, J. Qian, W. Qian, Z. Qian, Z. Qin, D. Qing, A. Quadt, D. R. Quarrie, W. B. Quayle, F. Quinonez, M. Raas, V. Radeka, V. Radescu, B. Radics, T. Rador, F. Ragusa, G. Rahal, A. M. Rahimi, D. Rahm, S. Rajagopalan, S. Rajek, P. N. Ratoff, F. Rauscher, E. Rauter, M. Raymond, A. L. Read, D. M. Rebuzzi, G. R. Redlinger, R. Reece, K. Reeves, E. Reinherz-Aronis, I. Reisinger, D. Reljic, C. Rembser, Z. Ren, P. Renkel, S. Rescia, M. Rescigno, S. Resconi, B. Resende, E. Rezaie, P. Reznicek, A. Richards, R. A. Richards, R. Richter, E. Richter-Was, M. Ridel, S. Rieke, M. Rijpstra, M. Rijssenbeek, A. Rimoldi, R. R. Rios, C. Risler, I. Riu, G. Rivoltella, F. Rizatdinova, K. Roberts, S. H. Robertson, A. Robichaud-Veronneau, D. Robinson, A. Robson, J. G. Rocha de Lima, C. Roda, D. Rodriguez, Y. Rodriguez, S. Roe, O. Rohne, V. Rojo, S. Rolli, A. Romaniouk, V. M. Romanov, G. Romeo, D. Romero, L. Roos, E. Ros, S. Rosati, G. A. Rosenbaum, E. I. Rosenberg, L. Rosselet, L. P. Rossi, M. Rotaru, J. Rothberg, I. Rottlaender, D. Rousseau, C. R. Royon, A. Rozanov, Y. Rozen, B. Ruckert, N. Ruckstuhl, V. I. Rud, G. Rudolph, F. Ruehr, F. Ruggieri, A. Ruiz-Martinez, V. Rumiantsev, L. Rumyantsev, N. A. Rusakovich, D. R. Rust, J. P. Rutherfoord, C. Ruwiedel, P. Ruzicka, Y. F. Ryabov, V. Ryadovikov, P. Ryan, A. M. Rybin, G. Rybkin, S. Rzaeva, A. F. Saavedra, H. F-W. Sadrozinski, R. Sadykov, H. Sakamoto, G. Salamanna, A. Salamon, M. Saleem, D. Salihagic, A. Salnikov, J. Salt, B. M. Salvachua Ferrando, D. Salvatore, F. Salvatore, A. Salzburger, D. Sampsonidis, B. H. Samset, M. A. Sanchis Lozano, H. Sandaker, H. G. Sander, M. Sandhoff, S. Sandvoss, D. P. C. Sankey, B. Sanny, A. Sansoni, C. Santamarina Rios, L. Santi, C. Santoni, R. Santonico, D. Santos, J. G. Saraiva, T. Sarangi, F. Sarri, O. Sasaki, T. Sasaki, N. Sasao, I. Satsounkevitch, G. Sauvage, P. Savard, A. Y. Savine, V. Savinov, L. Sawyer, D. H. Saxon, L. P. Says, C. Sbarra, A. Sbrizzi, D. A. Scannicchio, J. Schaarschmidt, P. Schacht, U. Schaefer, S. Schaetzel, A. C. Schaffer, D. Schaile, R. Schamberger, A. G. Schamov, V. A. Schegelsky, M. Schernau, M. I. Scherzer, C. Schiavi, J. Schieck, M. Schioppa, S. Schlenker, J. L. Schlereth, P. Schmid, M. P. Schmidt, C. Schmitt, M. Schmitz, M. Schott, D. Schouten, J. Schovancova, M. Schram, A. Schreiner, M. S. Schroers, S. Schuh, G. Schuler, J. Schultes, H-C. Schultz-Coulon, J. Schumacher, M. Schumacher, B. S. Schumm, Ph. Schune, C. S. Schwanenberger, A. Schwartzman, Ph. Schwemling, R. Schwienhorst, R. Schwierz, J. Schwindling, W. G. Scott, E. Sedykh, E. Segura, S. C. Seidel, A. Seiden, F. S. Seifert, J. M. Seixas, G. Sekhniaidze, D. M. Seliverstov, B. Sellden, M. Seman, N. Semprini-Cesari, C. Serfon, L. Serin, R. Seuster, H. Severini, M. E. Sevior, A. Sfyrla, L. Shan, J. T. Shank, M. Shapiro, P. B. Shatalov, L. Shaver, C. Shaw, K. S. Shaw, D. Sherman, P. Sherwood, A. Shibata, M. Shimojima, T. Shin, A. Shmeleva, M. J. Shochet, M. A. Shupe, P. Sicho, A. Sidoti, A. Siebel, M. Siebel, J. Siegrist, D. Sijacki, O. Silbert, J. Silva, S. B. Silverstein, V. Simak, Lj. Simic, S. Simion, B. Simmons, M. Simonyan, P. Sinervo, V. Sipica, G. Siragusa, A. N. Sisakyan, S. Yu. Sivoklokov, J. Sjolin, P. Skubic, N. Skvorodnev, T. Slavicek, K. Sliwa, J. Sloper, T. Sluka, V. Smakhtin, S. Yu. Smirnov, Y. Smirnov, L. N. Smirnova, O. Smirnova, B. C. Smith, K. M. Smith, M. Smizanska, K. Smolek, A. A. Snesarev, S. W. Snow, J. Snow, J. Snuverink, S. Snyder, M. Soares, R. Sobie, J. Sodomka, A. Soffer, C. A. Solans, M. Solar, E. Solfaroli Camillocci, A. A. Solodkov, O. V. Solovyanov, R. Soluk, J. Sondericker, V. Sopko, B. Sopko, M. Sosebee, V. V. Sosnovtsev, L. Sospedra Suay, A. Soukharev, S. Spagnolo, F. Spano, P. Speckmayer, E. Spencer, R. Spighi, G. Spigo, F. Spila, R. Spiwoks, L. Spogli, M. Spousta, T. Spreitzer, B. Spurlock, R. D. St. Denis, T. Stahl, R. Stamen, S. N. Stancu, E. Stanecka, R. W. Stanek, C. Stanescu, S. Stapnes, E. A. Starchenko, J. Stark, P. Staroba, J. Stastny, A. Staude, P. Stavina, G. Stavropoulos, P. Steinbach, P. Steinberg, I. Stekl, H. J. Stelzer, H. Stenzel, K. S. Stevenson, G. Stewart, T. D. Stewart, M. C. Stockton, G. Stoicea, S. Stonjek, P. Strachota, A. Stradling, A. Straessner, J. Strandberg, S. Strandberg, A. Strandlie, M. Strauss, P. Strizenec, R. Strohmer, D. M. Strom, J. A. Strong, R. Stroynowski, B. Stugu, I. 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A detailed study is presented of the expected performance of the ATLAS detector. The reconstruction of tracks, leptons, photons, missing energy and jets is investigated, together with the performance of b-tagging and the trigger. The physics potential for a variety of interesting physics processes, within the Standard Model and beyond, is examined. Read More

The Rabi frequency (coupling strength) of an electric-dipole transition is an important experimental parameter in laser-cooling and other atomic physics experiments. Though the relationship between Rabi frequency and atomic wavefunctions and/or atomic lifetimes is discussed in many references, there is a need for a concise, self-contained, accessible introduction to such calculations suitable for use by the typical student of laser cooling (experimental or theoretical). In this paper, I outline calculations of the Rabi frequencies for atoms with sub-structure due to orbital, spin and nuclear angular momentum. Read More

Electrons bound to shallow donors in GaAs have orbital energy levels analogous to those of the hydrogen atom. The polarization selection rules for optical transitions between the states analogous to the 1s and 2p states of hydrogen in a magnetic field are verified using Terahertz (THz) radiation from the UCSB Free Electron Laser. A polarization-selective coherent manipulation of the quantum states is demonstrated and the relevance to quantum information processing schemes is discussed. Read More

Affiliations: 1Brookhaven National Laboratory, 2Fermi National Accelerator Laboratory, 3Brookhaven National Laboratory, 4Brookhaven National Laboratory

A conceptual design is presented for a high power pion production target for muon colliders and neutrino factories that is based around a rotating metal band. Read More

Conceptual design studies are underway for muon colliders and other high-current muon storage rings that have the potential to become the first true ``neutrino factories''. Muon decays in long straight sections of the storage rings would produce precisely characterized beams of electron and muon type neutrinos of unprecedented intensity. This article reviews the prospects for these facilities to greatly extend our capabilities for neutrino experiments, largely emphasizing the physics of neutrino interactions. Read More

We report on the extraction of the structure functions F_2 and Delta xF_3 = xF_3nu-xF_3nub from CCFR neutrino-Fe and antineutrino-Fe differential cross sections. The extraction is performed in a physics model independent (PMI) way. This first measurement for Delta xF_3, which is useful in testing models of heavy charm production, is higher than current theoretical predictions. Read More

We report on the extraction of the structure functions F_2 and Delta xF_3 = xF_3nu-xF_3nubar from CCFR neutrino-Fe and antineutrino-Fe differential cross sections. The extraction is performed in a physics model independent (PMI) way. This first measurement for Delta xF_3, which is useful in testing models of heavy charm production, is higher than current theoretical predictions. Read More

New self-consistent parameter sets are presented and discussed for muon collider rings at center-of-mass energies of 10, 30 and 100 TeV. All three parameter sets attain luminosities of 3 x 10^35 /cm^2/s. The parameter sets benefit from new insights gained at the HEMC'99 workshop that considered the feasibility of many-TeV muon colliders. Read More

A conceptual design is presented for a high power cupronickel pion production target. It forms a circular band in a horizontal plane with approximate dimensions of: 2.5 meters radius, 6 cm high and 0. Read More

An update is presented on a conceptual design for a pion production target station using a rotating cupronickel band and that was originally proposed for use at a muon collider facility with a 4 MW pulsed proton beam. After reviewing the salient design features and motivations for this target, ongoing studies are described that are attempting to benchmark the thermal stresses and radiation damage on the target band using data from the Fermilab antiproton source and other operating targets. Possible parameter optimizations and alternative technologies for the rotating band are surveyed, including discussion on the the various proton beam parameters that might be encountered for rotating band targets at either muon colliders or neutrino factories. Read More

Neutrino radiation is expected to impose major design and siting constraints on many-TeV muon colliders. Previous predictions for radiation doses at TeV energy scales are briefly reviewed and then modified for extension to the many-TeV energy regime. The energy-cubed dependence of lower energy colliders is found to soften to an increase of slightly less than quadratic when averaged over the plane of the collider ring and slightly less than linear for the radiation hot spots downstream from straight sections in the collider ring. Read More

An overview is given of the potential for neutrino physics studies through parasitic use of the intense high energy neutrino beams that would be produced at future many-TeV muon colliders. Neutrino experiments clearly cannot compete with the collider physics. Except at the very highest energy muon colliders, the main thrust of the neutrino physics program would be to improve on the measurements from preceding neutrino experiments at lower energy muon colliders, particularly in the fields of B physics, quark mixing and CP violation. Read More

A review is given of the prospects for future colliders and collider physics at the energy frontier. A proof-of-plausibility scenario is presented for maximizing our progress in elementary particle physics by extending the energy reach of hadron and lepton colliders as quickly and economically as might be technically and financially feasible. The scenario comprises 5 colliders beyond the LHC -- one each of e+e- and hadron colliders and three muon colliders -- and is able to hold to the historical rate of progress in the log-energy reach of hadron and lepton colliders, reaching the 1 PeV constituent mass scale by the early 2040's. Read More

A focal point for the HEMC'99 workshop was the evaluation of straw-man parameter sets for the acceleration and collider rings of muon colliders at center of mass energies of 10 TeV and 100 TeV. These self-consistent parameter sets are presented and discussed. The methods and assumptions used in their generation are described and motivations are given for the specific choices of parameter values. Read More

We have investigated motional heating of laser-cooled 9Be+ ions held in radio-frequency (Paul) traps. We have measured heating rates in a variety of traps with different geometries, electrode materials, and characteristic sizes. The results show that heating is due to electric-field noise from the trap electrodes which exerts a stochastic fluctuating force on the ion. Read More

Three types of high rate neutrino detectors for neutrino interaction physics at neutrino factories are discussed. High performance general-purpose detectors might collect event samples on the order of a billion events or more. This could greatly improve on existing analyses of neutrino interactions and also lead to new and important analysis topics including, for example, precise determinations of the CKM matrix elements |Vub| and |Vcb|. Read More

Both muon colliders and non-colliding muon storage rings using muon collider technology have the potential to become the first true ``neutrino factories'', with uniquely intense and precisely characterized neutrino beams that could usher in a new era of high rate and long baseline neutrino physics studies at accelerators. This paper gives an overview of the predicted capabilities of neutrino factories for high rate neutrino physics analyses that will use huge event samples collected with novel, high performance neutrino detectors. Read More

One limit to the fidelity of quantum logic operations on trapped ions arises from heating of the ions' collective modes of motion. Sympathetic cooling of the ions during the logic operations may eliminate this source of errors. We discuss benefits and drawbacks of this proposal, and describe possible experimental implementations. Read More

An overview is given of muon collider technology and of the current status of the muon collider research program. The exciting potential of muon colliders for both neutrino physics and collider physics studies is then described and illustrated using self-consistent collider parameter sets at 0.1 TeV to 100 TeV center-of-mass energies. Read More

Some of the potential capabilities and design challenges of muon colliders are illustrated using self-consistent collider parameter sets at center of mass energies ranging from 0.1 TeV to 100 TeV. Read More

High energy muon colliders, such as the TeV-scale conceptual designs now being considered, are found to produce enough high energy neutrinos to constitute a potentially serious off-site radiation hazard in the neighbourhood of the accelerator site. A general characterization of this radiation hazard is given, followed by an order-of-magnitude calculation for the off-site annual radiation dose and a discussion of accelerator design and site selection strategies to minimize the radiation hazard. Read More

It is shown that muon decays in straight sections of muon collider rings will naturally produce highly collimated neutrino beams that can be several orders of magnitude stronger than the beams at existing accelerators. We discuss possible experimental setups and give a very brief overview of the physics potential from such beamlines. Formulae are given for the neutrino event rates at both short and long baseline neutrino experiments in these beams. Read More

Parameter lists are presented for speculative muon colliders at center-of-mass energies of 10 TeV and 100 TeV. The technological advances required to achieve the given parameters are itemized and discussed, and a discussion is given of the design goals and constraints. An important constraint for multi-TeV muon colliders is the need to minimize neutrino radiation from the collider ring. Read More

An overview is given of the neutrino physics potential of future muon storage rings that use muon collider technology to produce, accelerate and store large currents of muons. Read More

We describe the physics opportunities and technical challenges of a muon collider as a tool for exploring high energy physics phenomena. Read More

Tagging efficiencies and purities are estimated for the decay modes H -> b-bbar, H -> tau-taubar and H -> c-cbar of Higgs bosons produced at an s-channel muon collider Higgs factory. Read More

An overview is given of the neutrino physics potential of future muon storage rings that use muon collider technology to produce, accelerate and store large currents of muons. Read More