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2015-05-26
15:14
Luminosity measurement at ILC / Bozovic Jelisavcic, I (VINBG) ; Lukic, S (VINBG) ; Milutinovic Dumbelovic, G (VINBG) ; Pandurovic, M (VINBG) ; Smiljanic,I (VINBG)
In this paper we describe a method of luminosity measurement at the future linear collider ILC that estimates and corrects for the impact of the dominant sources of systematic uncertainty originating from the beam-induced effects and the background from physics processes. Based on the relativistic kinematics of the collision frame of the Bhabha process, the beam-beam related uncertainty is reduced to a permille independently of the precision with which the beam parameters are known. [...]
AIDA-PUB-2013-038.- Geneva : CERN, 2013 - Published in : JINST: 8 (2013) , no. P08012 Fulltext: PDF;

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2015-05-26
15:10
Performance of fully instrumented detector planes of the forward calorimeter of a Linear Collider detector / Abramowicz, H (TAU) ; Bozovic-Jelisavcic, I (VINBG) ; Lukic, S (VINBG) ; Pandurovic, M (VINBG) ; Smiljanic, I (VINBG)
Detector-plane prototypes of the very forward calorimetry of a future detector at an e +e − collider have been built and their performance was measured in an electron beam. The detector plane comprises silicon or GaAs pad sensors, dedicated front-end and ADC ASICs, and an FPGA for data concentration. [...]
AIDA-PUB-2014-029.- Geneva : CERN, 2014 - Published in : arXiv:1411.4431 (2014) Fulltext: PDF;

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2015-05-26
14:34
Precision luminosity measurement at ILC / In these proceedings a novel approach to deal with the beam-induced effects in luminosity measurement is presented. Based on the relativistic kinematics of the collision frame of the Bhabha process, the beam-beam related uncertainties can be reduced to the permille level independently of a precision with which the beam parameters are known. Specific event selection combined with the corrective methods we introduce, leads to the systematic uncertainty from the beam-induced effects to be at a few permille level in the peak region above the 80% of the nominal centre-of-mass energies at ILC.
Bozovic-Jelisavcic, I: VINBG Lukic, S: VINBG Pandurovic, M: VINBG Smiljanic, I: VINBG
AIDA-CONF-2015-053.- Geneva : CERN, 2015 - Published in : Fulltext: PDF;
In : International Workshop on Future Linear Colliders, Tokyo, Japan, 11 - 15 Nov 2013

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2015-05-26
14:25
Physics and detector studies with the very forward calorimeters at a future linear collider / Bozovic-Jelisavcic, I (VINBG)
The very forward region at a future e+ e- collider will be instrumented with calorimeters dedicated primarily for precise measurement of the integral luminosity with the precision required at a percent (CLIC) or at a permille level (ILC). As the constraints on luminosity precision come from the physics programs at future linear colliders, physics and machinerelated systematic effects are discussed as the main sources of uncertainty in luminosity measurement..
AIDA-CONF-2015-052.- Geneva : CERN, 2015 - Published in : Fulltext: PDF;
In : 36th International Conference on High Energy Physics, Melbourne, Australia, 4 - 11 Jul 2012

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2015-05-26
14:23
Design and R&D of very forward calorimeters for detectors at future e+ e- collider / Bozovic-Jelisavcic, I (VINBG)
Detectors at future e+ e-collider need special calorimeters in the very forward region for a fast estimate and precise measurement of the luminosity, to improve the hermeticity and mask the central tracking detectors from backscattered particles. Design optimized for the ILC collider using Monte Carlo simulations is presented. [...]
AIDA-CONF-2015-051.- Geneva : CERN, 2015 - Published in : Fulltext: PDF;
In : 2011 Europhysics Conference on High Energy Physics, Grenoble, France, 21 - 27 Jul 2011

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2015-05-26
14:18
Physics background in luminosity measurement at 1 TEV at ILC / PANDUROVIĆ, M (VINBG) ; BOŽOVIĆ-JELISAVČIĆ, I (VINBG)
In this paper we present the results of the investigation of the influence of two-photon processes on luminosity measurement at future linear collider ILC at center-ofmass energy of 1 TeV. The overall choice of selection criteria for the luminosity measurement with the respect to leading sources of systematic error is discussed. [...]
AIDA-CONF-2015-050.- Geneva : CERN, 2015 - Published in : Fulltext: AIDA-CONF-2015-050 - PDF; AIDA-CONF-2015-050-2 - PDF;
In : Workshop on Forward Calorimetry at Future Linear Collider, Belgrade, Serbia, 13 - 15 Sep 2011

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2015-05-26
14:16
The Bhabha suppression effect revisited / Lukic,S (VINBG)
The calculations of the Bhabha Suppression Effect (BHSE) in luminosity measurement at the International Linear Collider (ILC) were revisited. Preliminary estimates of the BHSE at the Compact Linear Collider (CLIC) were performed for the first time, as well. [...]
AIDA-CONF-2015-049.- Geneva : CERN, 2015 - Published in : Fulltext: PDF;
In : Workshop on Forward Calorimetry at Future Linear Collider, Belgrade, Serbia, 13 - 15 Sep 2011

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2015-05-26
07:53
Storage of orbital angular momenta of light via coherent population oscillation / de Almeida, A J F ; Barreiro, S ; Martins, W S ; Felinto, R A de Oliveira D ; Pruvost, L ; Tabosa, J W R
We report on the storage of Orbital Angular Momentum (OAM) of light via the phenomenon of Coherent Population Oscillation (CPO) in cold cesium atoms. The experiment is performed using a delayed four wave mixing configuration where the transverse optical information of a probe field carrying OAM associated with its azimuthal phase dependence is stored in the CPO of Zeeman sublevels of the hyperfine transition $F=3\rightarrow F^{\prime}=2$ of cesium $D_{2}$ line. [...]
arXiv:1505.06618.- 2015 - 4 p. External link: Preprint

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2015-05-26
07:53
Emergence of bimodality in controlling complex networks / Jia, Tao ; Liu, Yang-Yu ; Csóka, Endre ; Pósfai, Márton ; Slotine, Jean-Jacques ; Barabási, Albert-László
Our ability to control complex systems is a fundamental challenge of contemporary science. Recently introduced tools to identify the driver nodes, nodes through which we can achieve full control, predict the existence of multiple control configurations, prompting us to classify each node in a network based on their role in control. [...]
arXiv:1505.06476.- 2015 - Published in : Nature Communications 4 (2013) 2002 External link: Preprint

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2015-05-26
07:53
Experimental investigation of double layers in expanding plasmas / Plihon, N (LPP) ; Chabert, P (LPP) ; Corr, C S (LPP)
Double layers (DLs) have been observed in a plasma reactor composed of a source chamber attached to a larger expanding chamber. Positive ion beams generated across the DL were characterized in the low plasma potential region using retarding field energy analyzers. [...]
arXiv:1505.06303.- 2015 - Published in : American Institute of Physics 1 (2007) 013506 External link: Preprint

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