CERN Accelerating science

Published Articles

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2017-04-25
10:56
Ultra-short Electron Bunches by Velocity Bunching as Required for Plasma Wave Accelerations / Bacci, A. (INFN) ; Rossi, A.R. (INFN)
The generation of ultra-short bunches is nowadays a critical requirement for plasma wave accelerators, on which many laboratories world-wide are investigating or are close to starting with experimental activities. This requirement is true for both: external injection into “laser wake field accelerators”, where injected beams need lengths around or shorter than 10 fs; and the “plasma wake field accelerators”, where the wake field intensity scales like the driver bunch charge over the square of the rms bunch length ðQb=s2 z Þ. [...]
CERN-ACC-2014-0360.- Geneva : CERN, 2014 - Published in : Nuclear Instruments and Methods in Physics Research 740 (2014) 42–47 Fulltext: PDF;

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2017-04-25
06:01
Study of Pentaquark States at LHCb / Yang, Zhenwei (Tsinghua U., Beijing, CHEP) ; Zhang, Liming (Tsinghua U., Beijing, CHEP)
The observation of the two resonances consistent with charmonium-like pentaquark states, Pc(4380)+ and Pc(4450)+, by the LHCb collaboration inspires enthusiasm in particle physics. This article briefly reports about the observation and the experimental study of the pentaquark states by the LHCb collaboration
2016 - 6 p. - Published in : AAPPS Bull.: 26 (2016) , no. 4, pp. 2-7 External link: AAPPS

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2017-04-24
19:39
Design of a Plasma Discharge Circuit for Particle Wakefield Acceleration / Anania, M.P. (INFN) ; Chiadroni, E. (INFN) ; Cianchi, A. (Tor Vergata University) ; Di Giovenale, D. (INFN) ; Ferrario, M. (INFN) ; Flora, F. (ENEA) ; Gallerano, G.P. (ENEA) ; Ghigo, A. (INFN) ; Marocchino, A. (La Sapienza University) ; Massimo, F. (La Sapienza University) et al.
Plasma wakefield acceleration is the most promising acceleration technique known nowadays, able to provide very high accelerating fields (10–100 GV m1), enabling acceleration of electrons to GeV energy in few centimetres. However, the quality of the electron bunches accelerated with this technique is still not comparable with that of conventional accelerators; radiofrequency-based accelerators, in fact, are limited in the accelerating field (10–100 MV m1) requiring therefore kilometric distances to reach the GeV energies, but can provide very bright electron bunches. [...]
CERN-ACC-2014-0359.- Geneva : CERN, 2014 - Published in : Nuclear Instruments and Methods in Physics Research A 740 (2014) 193-196 Fulltext: PDF;

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2017-04-19
06:27
The Weak Equivalence Principle With Antimatter: The AEgIS Experiment At CERN / Pagano, D (Bern U. ; Brescia U.) ; Amsler, C (Bern U.) ; Ariga, T (Brescia U.) ; Bonomi, G (Bern U.) ; Bräunig, P (Heidelberg U.) ; Brusa, R S (Trento U. ; TIFPA-INFN, Trento) ; Cabaret, L (Orsay) ; Caccia, M (INFN, Milan ; Insubria U., Como) ; Caravita, R (Genoa U. ; INFN, Genoa) ; Castelli, F (Insubria U., Como ; Milan U.) et al.
he AEgIS experiment at CERN’s Antiproton Decelerator (AD) aims at performing a direct measurement of the gravitational force on antimatter to probe the Weak Equivalence Principle of General Relativity with antimatter. The idea is to measure the vertical displacement of a cold antihydrogen beam, due to the gravitational force, by using a moiré deflectometer. [...]
ARISF, 2016 - 4 p. - Published in : (2016) , pp. 161-164 Published version: PDF;
In : 51st Rencontres de Moriond on Cosmology, La Thuile, Italy, 19 - 26 Mar 2016, pp.161-164

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2017-04-19
06:27
Peripheral orbit model / Hara, Yasuo (CERN ; Tokyo U. of Education)
Peripheral orbit model, in which an incoming hadron is assumed to revolve in a peripheral orbit around a target hadron, is discussed. The non-diffractive parts of two-body reaction amplitudes of hadrons are expressed in terms of the radius, width an absorptivity of the orbit. [...]
1975 - Published in : : 1, pp. 135 Published version: PDF;
In : 9th Rencontres de Moriond, v.1-v.2, Méribel-lès-Allues, France, 3 - 15 Mar 1974, pp.135 (v.1)

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2017-04-19
06:27
The status of the search for muonless events in the broad band neutrino beam at NAL / Aubert, B ; Benvenuti, A ; Cline, D ; Ford, W T ; Imlay, R ; Ling, T Y ; Mann, A K ; Messing, F ; Piccioni, R ; Pilcher, J et al.
The current status and results of the search for muonless events in the broad band neutrino beam at NAL are presented. An excess of events unaccompanied by muon is observed which cannot be explained by instrumental effects. [...]
1975 - 14 p. - Published in : : 2, pp. 125-138 Published version: PDF;
In : 9th Rencontres de Moriond, v.1-v.2, Méribel-lès-Allues, France, 3 - 15 Mar 1974, pp.125-138 (v.2)

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2017-04-19
06:27
Neutral Currents in Gargamelle / Kluberg, L (Ecole Polytechnique)
1975 - 13 p. - Published in : : 2 (1974) , pp. 111-123 Published version: PDF;
In : 9th Rencontres de Moriond, v.1-v.2, Méribel-lès-Allues, France, 3 - 15 Mar 1974, pp.111-123 (v.2)

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2017-04-19
06:27
Tests of Scale Invariance in the Gargamelle Neutrino Experiment / Degrange, B (Ecole Polytechnique)
1975 - 24 p. - Published in : : 2, pp. 51-74 Published version: PDF;
In : 9th Rencontres de Moriond, v.1-v.2, Méribel-lès-Allues, France, 3 - 15 Mar 1974, pp.51-74 (v.2)

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2017-04-14
07:06
Triggering of a pressurized spark gap by a laser beam / Deutsch, F (CERN)
A delay line was discharged into a terminating resistor by a spark gap of coaxial design. The spark gap was triggered by a focused laser beam, introduced along the axis; a Q-switched ruby laser giving pulses of 20 ns duration and up to 50 MW power was used. [...]
1968 - 9 p. - Published in : J. Phys. D 1 (1968) 1711-1719

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2017-04-14
07:06
Nucleon-nucleon potential for isotopic triplet state / Ulehla, I (Charles U.) ; Bystricky, J (Prague, Inst. Phys.) ; Wiesner, J (Prague, Inst. Phys.) ; Lelek, V (Prague, Inst. Phys.) ; Humhal, E (Prague, Tech. U.) ; Lehar, F (CERN)
The nucleon-nucleon potential for the isotopic triplet state is computed as a superposition of Yukawa-type potentials. It contains the central, spin, spin-orbit, quadratic spin-orbit and tensor term and is dependent on the total angular momentumJ. [...]
1969 - 8 p. - Published in : Czechoslov. J. Phys. 19 (1969) 1570-1577

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