A method to characterize metalenses for light collection applications

Metalenses and metasurfaces are promising emerging technologies that could improve light collection in light collection detectors, concentrating light on small area photodetectors such as silicon photomultipliers. Here we present a detailed method to characterize metalenses to assess their efficiency at concentrating monochromatic light coming from a wide range of incidence angles, not taking into account their imaging quality

The Long-Baseline Neutrino Experiment: Exploring Fundamental Symmetries of the Universe

The preponderance of matter over antimatter in the early Universe, the dynamics of the supernova bursts that produced the heavy elements necessary for life and whether protons eventually decay --- these mysteries at the forefront of particle physics and astrophysics are key to understanding the early evolution of our Universe, its current state and its eventual fate. The Long-Baseline Neutrino Experiment (LBNE) represents an extensively developed plan for a world-class experiment dedicated to addressing these questions. LBNE is conceived around three central components: (1) a new, high-intensity neutrino source generated from a megawatt-class proton accelerator at Fermi National Accelerator Laboratory, (2) a near neutrino detector just downstream of the source, and (3) a massive liquid argon time-projection chamber deployed as a far detector deep underground at the Sanford Underground Research Facility. This facility, located at the site of the former Homestake Mine in Lead, South Dakota, is approximately 1,300 km from the neutrino source at Fermilab -- a distance (baseline) that delivers optimal sensitivity to neutrino charge-parity symmetry violation and mass ordering effects. This ambitious yet cost-effective design incorporates scalability and flexibility and can accommodate a variety of upgrades and contributions. With its exceptional combination of experimental configuration, technical capabilities, and potential for transformative discoveries, LBNE promises to be a vital facility for the field of particle physics worldwide, providing physicists from around the globe with opportunities to collaborate in a twenty to thirty year program of exciting science. In this document we provide a comprehensive overview of LBNE's scientific objectives, its place in the landscape of neutrino physics worldwide, the technologies it will incorporate and the capabilities it will possess.Comment: Major update of previous version. This is the reference document for LBNE science program and current status. Chapters 1, 3, and 9 provide a comprehensive overview of LBNE's scientific objectives, its place in the landscape of neutrino physics worldwide, the technologies it will incorporate and the capabilities it will possess. 288 pages, 116 figure

CDF Run-II Silicon Detector: Operations and Aging

The CDF Run-II silicon microstrip detector has seen almost 12 fb{sup -1} of proton-antiproton collisions over the last 10 years. It has shown remarkable performance, with 80% of its channels still operating error-free, and only one of its eight layers approaching the operational limits for full depletion. The measured depletion voltage and signal-to-noise ratio of these sensors give unique information about the behavior of sensors irradiated slowly over a long period of time. Data from heavily irradiated, double-sided sensors excludes a monotonic electric field inside the sensor and is instead consistent with a doubly-peaked field that is lower in the center of the sensor and higher at the edges

CDF Run-II silicon detector: operations and aging

The CDF Run-II silicon microstrip detector has seen almost 12 fb −1 of proton-antiproton collisions over the last 10 years. It has shown remarkable performance, with 80% of its channels still operating error-free, and only one of its eight layers approaching the operational limits for full depletion. The measured depletion voltage and signal-to-noise ratio of these sensors give unique information about the behavior of sensors irradiated slowly over a long period of time. Data from heavily irradiated, double-sided sensors excludes a monotonic electric field inside the sensor and is instead consistent with a doubly-peaked field that is lower in the center of the sensor and higher at the edges

P-986 Letter of Intent: Medium-Energy Antiproton Physics at Fermilab

1 Fermilab has long had the world’s most intense antiproton source. Despite this, the opportunities for medium-energy antiproton physics at Fermilab have been limited in the past and — with the antiproton source now exclusively dedicated to serving the needs of the Tevatron Collider — are currently nonexistent. The anticipated shutdown of the Tevatron in 2010 presents the opportunity for a world-leading medium-energy antiproton program. We summarize the current status of the Fermilab antiproton fa-cility and review some physics topics for which the experiment we propose could make the world’s best measurements. Among these, the ones with the clearest potential for high impact and visibility are in the area of charm mixing and CP violation. Continued running of the Antiproton Source following the shutdown of the Tevatron is thus one of the simplest ways that Fermilab can restore a degree of breadth to its future research program. The impact on the rest of the program will be minor. We request a small amount of effort over the coming months in order to assess these issues in more detail

Measurement of the resonance parameters of the X1(1(3)P(1)) and X2(1(3)P(2)) states of charmonium formed in antiproton-proton annihilations

We have studied the P-3(J) (chi(C)) states of charmonium in formation by antiproton-proton annihilations in experiment E835 at the Fermilab Antiproton Source. We report new measurements of the mass, width, and B(chi(cJ) -> (p) over barp)Gamma(chi(cJ) -> J/psi + anything) for the chi(c1) and chi(c2) by means of the inclusive reaction (p) over barp -> X-cJ -> J/psi + anything -> (e(+)e(-)) + anything. Using the sub-sample of events where chi(cJ) -> gamma + J/psi -> y + (e(+)e(-)) is fully reconstructed, we derive B(chi(cJ) -> (p) over barp)Gamma(chi(cJ) -> J/psi + gamma). We summarize the results of the E760 (updated) and E835 measurements of mass, width and B(chi(cJ) -> (p) over barp)Gamma(chi(cJ) -> J/psi + gamma) (J = 0, 1, 2) and discuss the significance of these measurements

Spin Filtering Studies at COSY

none114Understanding the interplay of the nuclear interaction with polarized protons and the electromagnetic interaction with polarized electrons in polarized atoms is crucial to progress towards the PAX goal to eventually produce stored polarized antiproton beams at FAIR. Presently, there exist two competing theoretical scenarios: one with substantial filtering of (anti)protons by atomic electrons, while the second one suggests a self-cancellation of the electron contribution to filtering. The issue can be clarified by studying the energy dependence of the polarization buildup in a proton beam at COSY at energies in the range from 20 to about 800 MeV. This Letter-of-Intent summarizes the physics case and possible experimental approaches to these studies at COSY.noneC. Barschel; U. Bechstedt; J. Dietrich; N. Dolfus; R. Engels; R. Gebel; H. Hadamek; J. Haidenbauer; C. Hanhart; A. Kacharava; G. Krol; M. K¨uven; G. Langenberg; A. Lehrach; B. Lorentz; R. Maier; S. Martin; U.-G. Meißner; M. Nekipelov; N.N. Nikolaev; D. Oellers; G. d’Orsaneo; D. Prasuhn; F. Rathmann; M. Retzlaff; J. Sarkadi; R. Schleichert; H. Seyfarth; A. Sibirtsev; D. Sp¨olgen; H.J. Stein; H. Stockhorst; H. Str¨oher; Chr. Weidemann; D. Welsch; and P. Wieder; L. Barion; S. Bertelli; V. Carassiti; G. Ciullo; M. Contalbrigo; A. Cotta–Ramusino; P.F. Dalpiaz; A. Drago; G. Guidoboni; P. Lenisa; L. Pappalardo; G. Stancari; M. Stancari; M. Statera; T. Azarian; A. Kulikov; V. Kurbatov; G. Macharashvili; S. Merzliakov; I.N. Meshkov; A. Smirnov; D. Tsirkov; u. Uzikov; F.M. Esser; R. Greven; G. Hansen; H. Jadgfeld; J. Kieven; F. Klehr; A. Schwaab; H. Soltner; H. Straatmann; S. Barsov; S. Belostotski; K. Grigoryev; P. Kravtsov; M. Mikirtychiants; S. Mikirtychiants; A. Vasilyev; D. Chiladze; A. Garishvili; N. Lomidze; D. Mchedlishvili; M. Nioradze; M. Tabidze; N. Akopov; A. Avetisyan; G. Elbakyan; H. Marukyan; and S. Taroian; P. Benati; W. Erven; F.–J. Kayser; H. Kleines; and P. W¨ustner; D. Bruncko; J. Ferencei; J. Muˇsinsk´y; and J. Urb´an; W. Augustyniak; B. Marianski; A. Trzcinski; P. Zupranski; S. Dymov; A. Nass; and E. Steffens; K. Rathsman; P.–E. Tegn´er; and P. Th¨orngren Engblom; A.I. Milstein; Y. Shatunov; and V.M. Strakhovenko; R. De Leo; and G. Tagliente; B. K¨ampfer; and S. Trusov; N. Buttimore; H.O. MeyerC., Barschel; U., Bechstedt; J., Dietrich; N., Dolfus; R., Engels; R., Gebel; H., Hadamek; J., Haidenbauer; C., Hanhart; A., Kacharava; G., Krol; M., K¨uven; G., Langenberg; A., Lehrach; B., Lorentz; R., Maier; S., Martin; U. G., Meißner; M., Nekipelov; N. N., Nikolaev; D., Oellers; G., D’Orsaneo; D., Prasuhn; F., Rathmann; M., Retzlaff; J., Sarkadi; R., Schleichert; H., Seyfarth; A., Sibirtsev; D., Sp¨olgen; H. J., Stein; H., Stockhorst; H., Str¨oher; Weidemann, C. h. r.; D., Welsch; P., Wieder; Barion, Luca; Bertelli, Susanna; Carassiti, Vittore; Ciullo, Giuseppe; Contalbrigo, Marco; COTTA RAMUSINO, Angelo; Ferretti, Paola; Drago, Alessandro; Guidoboni, Greta; Lenisa, Paolo; Pappalardo, Luciano Libero; Stancari, Giulio; Stancari, Michelle Dawn; Statera, Marco; T., Azarian; A., Kulikov; V., Kurbatov; G., Macharashvili; S., Merzliakov; I. N., Meshkov; A., Smirnov; D., Tsirkov; U., Uzikov; F. M., Esser; R., Greven; G., Hansen; H., Jadgfeld; J., Kieven; F., Klehr; A., Schwaab; H., Soltner; H., Straatmann; S., Barsov; S., Belostotski; K., Grigoryev; P., Kravtsov; M., Mikirtychiants; S., Mikirtychiants; A., Vasilyev; D., Chiladze; A., Garishvili; N., Lomidze; D., Mchedlishvili; M., Nioradze; M., Tabidze; N., Akopov; A., Avetisyan; G., Elbakyan; H., Marukyan; S., Taroian; P., Benati; W., Erven; Kayser, F. –. J.; H., Kleines; P., W¨ustner; D., Bruncko; J., Ferencei; J., Muˇsinsk´y; J., Urb´an; W., Augustyniak; B., Marianski; A., Trzcinski; P., Zupranski; S., Dymov; A., Nass; E., Steffens; K., Rathsman; Tegn´er, P. –. E.; P., Th¨orngren Engblom; A. I., Milstein; Y., Shatunov; V. M., Strakhovenko; R., De Leo; G., Tagliente; B., K¨ampfer; S., Trusov; N., Buttimore; H. O., Meye