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KEDR detector has the tagging system (TS) to study the gamma-gamma processes. To determine the two-photon invariant mass, the energies of the scattered at small angles electrons and positrons are measured by the magnetic spectrometer…

仪器与探测器 · 物理学 2014-08-28 V. V. Kaminskiy , N. Yu. Muchnoi , V. N. Zhilich

Calibration of the absolute energy scale at high-energy photon (gamma-gamma, gamma-electron) colliders is discussed. The luminosity spectrum at photon colliders is broad and has a rather sharp high-energy edge, which can be used, for…

加速器物理 · 物理学 2015-06-22 V. I. Telnov

A method for circular e$^-$/e$^+$ accelerator beam energy measurement is proposed. Coordinate of an electron (or a positron) in a focusing magnetic spectrometer built in a circular accelerator depends on its energy, two spectrometer…

仪器与探测器 · 物理学 2017-09-13 V. V. Kaminskiy , N. Yu. Muchnoi , V. N. Zhilich

This document contains a proposal of the BEPC-II collider beam energy calibration system (IHEP, Beijing). The system is based on Compton backscattering of carbon dioxide laser radiation, producing a beam of high energy photons. Their energy…

加速器物理 · 物理学 2008-04-02 M. N. Achasov , ChengDong Fu , Xiaohu Mo , N. Yu. Muchnoi , Qing Qin , Huamin Qu , Yifang Wang , Jinqiang Xu

In this report, we present the energy calibration of the Hall B bremsstrahlung tagging system at the Thomas Jefferson National Accelerator Facility. The calibration was performed using a magnetic pair spectrometer. The tagged photon energy…

The beam energy measurement system for the VEPP-2000 electron-positron collider is described. The method of Compton backscattering of $CO$ laser photons on the electron beam is used. The relative systematic uncertainty of the beam energy…

The beam energy measurement system is of great importance and profit for both BEPC-II accelerator and BES-III detector. The system is based on measuring the energies of Compton back-scattered photons. Many advanced techniques and precise…

The beam energy measurement system (BEMS) for the upgraded Beijing electron-positron collider BEPC-II is described. The system is based on measuring the energies of Compton back-scattered photons. The relative systematic uncertainty of the…

The main task of an energy calibration is to find a relation between pulse-height values and the corresponding energies. Doing this for each pulse-height channel individually requires an elaborated input spectrum with an excellent counting…

仪器与探测器 · 物理学 2016-02-17 Daniel Maier , Olivier Limousin

The uncertainty of the energy measurement of the electron beam on circular electron positron collider (CEPC) must be smaller than 10$\mathrm{MeV}$ to make sure the accurate measurement of the mass of the Higgs boson. In order to simplify…

A precise comparison of the cross sections for the elastic scattering of electrons and positrons on protons was performed recently at the VEPP-3 storage ring in Novosibirsk, Russia. To provide the proposed accuracy, the energies of the…

Using the KEDR detector at the VEPP-4M $e^+e^-$ collider, we have determined the values of $R$ at thirteen points of the center-of-mass energy between 1.84 and 3.05 GeV. The achieved accuracy is about or better than $3.9\%$ at most of the…

This paper presents the electron and photon energy calibration obtained with the ATLAS detector using 140 fb$^{-1}$ of LHC proton-proton collision data recorded at $\sqrt{s}=13$ TeV between 2015 and 2018. Methods for the measurement of…

高能物理 - 实验 · 物理学 2024-03-01 ATLAS Collaboration

A novel, non-invasive method of measuring the beam energy at the International Linear Collider is proposed. Laser light collides head-on with beam particles and either the energy of the Compton scattered electrons near the kinematic…

仪器与探测器 · 物理学 2009-08-05 N. Muchnoi , H. J. Schreiber , M. Viti

Linear collider designs foresee some bends of about 5-10 mrad. The spin precession angle of one TeV electrons on 10 mrad bend is 23.2 rad and it changes proportional to the energy. Measurement of the spin direction using Compton scattering…

高能物理 - 实验 · 物理学 2009-11-10 V. I. Telnov

SiD is a robust, silicon-based detector proposed for the International Linear Collider (ILC). SiD employs a sampling silicon-tungsten electromagnetic calorimeter (ECal) to accurately measure the energies of electrons, positrons, and photons…

仪器与探测器 · 物理学 2020-02-17 Lucas Braun , Jason T. Barkeloo , James E. Brau , Christopher T. Potter

The energy calibration of calorimeters at collider experiments, such as the ones at the CERN Large Hadron Collider, is crucial for achieving the experiments physics objectives. Standard calibration approaches have limitations that become…

The present work continues a series of the KEDR measurements of the $R$ value that started in 2010 at the VEPP-4M $e^+e^-$ collider. By combining new data with our previous results in this energy range we measured the values of…

高能物理 - 实验 · 物理学 2018-11-14 V. V. Anashin , O. V. Anchugov , V. M. Aulchenko , E. M. Baldin , G. N. Baranov , A. K. Barladyan , A. Yu. Barnyakov , M. Yu. Barnyakov , S. E. Baru , I. Yu. Basok , A. M. Batrakov , E. A. Bekhtenev , A. E. Blinov , V. E. Blinov , A. V. Bobrov , V. S. Bobrovnikov , A. V. Bogomyagkov , A. E. Bondar , A. R. Buzykaev , P. B. Cheblakov , V. L. Dorohov , S. I. Eidelman , D. N. Grigoriev , S. A. Glukhov , V. V. Kaminskiy , S. E. Karnaev , G. V. Karpov , S. V. Karpov , K. Yu. Karukina , D. P. Kashtankin , P. V. Kasyanenko , T. A. Kharlamova , V. A. Kiselev , V. V. Kolmogorov , S. A. Kononov , K. Yu. Kotov , A. A. Krasnov , E. A. Kravchenko , V. N. Kudryavtsev , V. F. Kulikov , G. Ya. Kurkin , I. A. Kuyanov , E. B. Levichev , D. A. Maksimov , V. M. Malyshev , A. L. Maslennikov , O. I. Meshkov , S. I. Mishnev , I. A. Morozov , I. I. Morozov , S. A. Nikitin , I. B. Nikolaev , I. N. Okunev , A. P. Onuchin , S. B. Oreshkin , A. A. Osipov , I. V. Ovtin , S. V. Peleganchuk , S. G. Pivovarov , P. A. Piminov , V. V. Petrov , V. G. Prisekin , O. L. Rezanova , A. A. Ruban , G. A. Savinov , A. G. Shamov , D. N. Shatilov , D. A. Shvedov , B. A. Shwartz , E. A. Simonov , S. V. Sinyatkin , A. N. Skrinsky , A. V. Sokolov , D. P. Sukhanov , A. M. Sukharev , E. V. Starostina , A. A. Talyshev , V. A. Tayursky , V. I. Telnov , Yu. A. Tikhonov , K. Yu. Todyshev , A. G. Tribendis , G. M. Tumaikin , Yu. V. Usov , A. I. Vorobiov , V. N. Zhilich , A. A. Zhukov , V. V. Zhulanov , A. N. Zhuravlev

The calibration of jet energy measured in the \DZero detector is presented, based on ppbar collisions at a center-of-mass energy of 1.96 TeV at the Fermilab Tevatron collider. Jet energies are measured using a sampling calorimeter composed…

高能物理 - 实验 · 物理学 2013-12-25 D0 Collaboration

Calibration of the three layer NaI(Tl) spherical calorimeter of the SND detector using electron -- positron scattering events is described. Energy resolution of $5 % (FWHM/2.36)$ for 500 MeV photons was achieved.

仪器与探测器 · 物理学 2009-10-31 M. N. Achasov , D. A. Bukin , T. V. Dimova , V. P. Druzhinin , V. B. Golubev , V. N. Ivanchenko , A. A. Korol
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