... CROSS SECTION The cross section for neutrino-proton elastic scattering is an important prediction [2] of the Standard Model, and it has been confirmed by extensive measurements at GeV energies (see, e.g., Ref. ... PROTON RECOIL SPECTRUM The elastically-scattered protons will have kinetic energies of a few MeV. ... Because the proton spectrum has already been smeared by the neutrino spectrum and the differential cross section, the Gaussian energy resolution has only a minor effect. ...
SCIENCE AND TECHNOLOGY OF BOREXINO: A REAL TIME DETECTOR FOR LOW ENERGY SOLAR NEUTRINOS Borexino Collaboration G. Alimontik, C. Arpesellaa, H. Backb, M. Balataa, T . Beaun, G. Bellinik&, J . Benzigerq, S. Bonettik, A. Brigattik, B. Caccianigak, L. Cadonatir, F. Calapricer, G. Ceccheto, M. Cheni, A. DeBario, E. DeHaasr, H. de Kerretn, O. Donghia, M. Deutschd, F. Eliseip, A. Etenkol, F. von Feilitzschf, R. Fernholzr, R. Forda, B. Freudigerh, A. Garagiolak, C. Galbiatir, F. Gattig, S. Gazzanaa, M. Giammarchik,
1 Solar neutrino experiments and Borexino perspectives P. Aliania ,V. Antonellia ,M. Picarielloa,E. Torrente-Lujana a b b Dip. di Fisica, Universita di Milano e I.N.F.N., Sezione di Milano, Via Celoria 16, Milano, Italy ` Dept. ... Aut. de Madrid, Spain and CERN TH-Division, CH-1202 Geneve arXiv:hep-ph/0112101 v1 6 Dec 2001 We present an up dated analysis of all the data available ab out solar neutrinos, including the charged current SNO results. ... SNO Collaboration], Phys. Rev. Lett. ... Rev. Mod. ...
JADWIN HALL 226 SEPTEMBER 3, 2007 SUMMARY of BX QUOTABLE NUMBERS SOURCE Livetime Fiducial Exposure 47.4 days NUMBER COMMENT 4136 day · ton 3058 day · ton for fit without subtraction 314.8 m3 278.3 ton 500 phoeoelectrons/MeV 210 Po Scintillator Mass and Volume Light Yield Resolution on Position Reconstruction Be neutrinos experimental 7 from spectral ...
Phenylxylylethane ( PXE ): a high-density, high-flashp oint organic liquid scintillator for applications in low-energy particle and astrophysics exp eriments Borexino Collaboration H.O. Backa , M. Balatab , A. de Baric , T. Beaud , A. de Bellefond , G. Bellinie , J. Benzigerf , S. Bonettie , A ... M. Smoluchowski Institute of Physics, Jagel lonian University, PL-30059 Krakow, Poland Abstract We report on the study of a new liquid ... Tail-to-total-ratio r48 /tot of 214 Bi / and 214 Po events. ...
... We begin our story in 1964, when we published back-to-back papers in Physical Review Letters arguing that a 100, 000 gallon detector of perchloroethylene could be built which would measure the solar neutrino capture rate on chlorine 1 . ... These three experiments introduced the technology of organic scintillators into the arena of solar neutrino research, a technique that will only finally be used in 2001 when the BOREXINO detector will begin to detect low energy solar neutrinos. ...
... In later sections, we shall see how seemingly unrelated discoveries in fundamental physics led to a theory of nuclear energy generation in stars that resolved the controversy over the age of the sun and explained the origin of solar radiation. In the section just before the summary, we shall discuss how experiments that were designed to test the theory of nuclear energy generation in stars revealed a new mystery, the Mystery of the Missing Neutrinos. I. THE AGE OF THE SUN How old is the sun? ...
... The plot on the right represent the time evolution of the event 15457 and 15458: the histogram is filled with the hits of both event referred to the trigger time of the second event (type = neutron) with 50 ns bin. ... The large gate is sensitive to more than one neutron or to any event in the 1.6ms; in the right plot a second event is displayed; while the second peak (at -1.58ms) is a good neutron candidate (530 hits) the third could be something else (250 hits). ...
First real time detection of 7Be solar neutrinos by Borexino Borexino Collaboration C. Arpesella a,1 , G. Bellini b , J. Benziger c , S. Bonetti b , B. Caccianiga b , F. Calaprice d , F. Dalnoki-Veress ... -Planck-Institut fur Kernphysik Heidelberg Germany ¨ b h Abstract This paper reports a direct measurement of the 7 Be solar neutrino signal rate performed with the Borexino low background liquid scintillator detector ... Each of these links produces electron neutrinos (e ). ...
PRESS RELEASE August 20, 2007 Gran Sasso performs a cat scan of the Sun The international experiment Borexino, which is being conducted at the underground laboratories of the Istituto Nazionale di Fisica (INFN, Italy's National Institute of Nuclear Physics) in the Gran Sasso massif, has observed extremely low-energy neutrinos emanating from the Sun, at a rate of dozens events a day. ... These reactions can only be studied by observing the neutrinos that they emit. ...
How PC helps to develop new small control system for new small accelerator. ... CAN adapter installed in PC-N2 controls embedded controllers belonged to family of "Smart Devices"--intelligent controllers which support functions 2 STRUCTURE OF CONTROL SYSTEM The cs (Fig.1) consists from three levels -- non realtime top level, soft real-time middle level where relatively slow algorithms are implemented and front-end of real-time digital feedback control, data acquisition and processing [1]. ...
PMT DARK NOISE MONITORING SYSTEM FOR NEUTRINO DETECTOR BOREXINO BASED ON THE DEVICENET PROTOCOL AND WEB - ACCESS A.S. Chepurnov1, D.I. Orekhov2, D.A. Maimistov2, A.A. Sabelnikov3, A.V. Etenko3 1 Scobelcyn Institute for Nuclear Physics ... Physics, Moscow State University, Russia 3 RRC Kurchatov Institute , Moscow, Russia E-mail: chas@rtm-cs.sinp.msu.ru; Monitoring of PMT dark noise in neutrino detector ... For this reason monitoring and analysis of dark noise is necessary. ...
... CAN-bus together with high-level application protocols is used now to control large experimental installations and particle accelerators. ... Such software components as drivers for PC adapters, the bus emulator and protocol analyzers have been developed under Linux. ... Linux , , , . ... The following decisions have been used for the describing systems: diskless PC running under Linux with real-time extension RTLinux [5, 6]; stand-alone intelligent controllers [7]; CAN-bus technology [8]. ...
... APPLICATION OF COMPUTERS IN EXPERIMENTS A Distributed Data Acquisition and Analysis System Based on a CAN Bus D. I. Orekhova, A. S. Chepurnova, A. A. Sabel'nikovb, and D. I. Maimistova a Skobel'tsyn Institute of Nuclear Physics, Moscow State University, Vorob'evy gory 1, str. ... The system is used for monitoring dark noises of photomultiplier tubes in the BOREXINO neutrino detector (Italy). ... The data processing module packs data into the database (DB) and temporarily stores data on frequencies. ...
Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 1. ... Licensor" shall mean the copyright owner or entity authorized by the copyright owner that is granting the License. ... Work" shall mean the work of authorship, whether in Source or Object form, made available under the License, as indicated by a copyright notice that is included in or attached to the work (an example is provided in the Appendix below). ...
... Dedicated software of the system consists of low level acquisition software for DSP, network software for controllers and host PC, application software for PC to present date for operator and control system. ... The platform was used to develop software for the CS, for the beam diagnostic system, as well as for high level, for embedded applications, and for real-time as well as for non real-time components. ... One more application of CAN-bus for beam diagnostic systems is described. ...
... June 1999 HTTP Authentication: Basic and Digest Access Authentication Status of this Memo This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. ... 7 3.2 Specification of Digest Headers.. ... 1.2 Access Authentication Framework HTTP provides a simple challenge-response authentication mechanism that MAY be used by a server to challenge a client request and by a client to provide authentication information. ...