Keyword: background
Paper Title Other Keywords Page
WEXBA01 IR Design for High Luminosity and Low Backgrounds photon, detector, luminosity, focusing 194
 
  • M.K. Sullivan
    SLAC, Menlo Park, California, USA
  
  Funding: Work supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-76SF00515 and HEP
New e+e− accelerator designs aim for factory-like performance with high-current beams and high luminosities. These new machines will push interaction region designs to new levels and require a careful evaluation of all previous background sources as well as introduce possibly new background sources. I present here a summary of standard background sources and also suggest a new possible background source for Synchrotron Radiation (SR) namely, specular reflection. In addition, one will have to pay closer attention to the beam tail particle distribution as this may become a significant source of SR background from the high-current and high-energy beams of these new designs. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-eeFACT2018-WEXBA01  
About • paper received ※ 16 October 2018       paper accepted ※ 19 February 2019       issue date ※ 21 April 2019  
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)  
 
WEXBA02 Machine Detector Interface for the e+e− Future Circular Collider detector, simulation, luminosity, photon 201
 
  • M. Boscolo, O.R. Blanco-García
    INFN/LNF, Frascati, Italy
  • N. Bacchetta
    INFN- Sez. di Padova, Padova, Italy
  • E. Belli
    INFN-Roma, Roma, Italy
  • M. Benedikt, H. Burkhardt, D. El Khechen, K. Elsener, M. Gil Costa, P. Janot, R. Kersevan, A.M. Kolano, E. Leogrande, M. Lueckof, E. Perez, N.A. Tehrani, H.H.J. Ten Kate, O. Viazlo, G.G. Voutsinas, F. Zimmermann
    CERN, Meyrin, Switzerland
  • A.P. Blondel, M. Koratzinos
    DPNC, Genève, Switzerland
  • A.V. Bogomyagkov, E.B. Levichev, S.V. Sinyatkin
    BINP SB RAS, Novosibirsk, Russia
  • F. Collamati
    INFN-Roma1, Rome, Italy
  • M. Dam
    NBI, København, Denmark
  • A. Novokhatski, M.K. Sullivan
    SLAC, Menlo Park, California, USA
  • K. Oide
    KEK, Ibaraki, Japan
  
  The international Future Circular Collider (FCC) study~[fccweb] aims at a design of p-p, \rm e+e-, e-p colliders to be built in a new 100~km tunnel in the Geneva region. The \rm e+e- collider (FCC-ee) has a centre of mass energy range between 90 (Z-pole) and 375~GeV (t\bar{t}). To reach such unprecedented energies and luminosities, the design of the interaction region is crucial. The crab-waist collision scheme~[ref:cw] has been chosen for the design and it will be compatible with all beam energies. In this paper we will describe the machine detector interface layout including the solenoid compensation scheme. We will describe how this layout fulfills all the requirements set by the parameters table and by the physical constraints. We will summarize the studies of the impact of the synchrotron radiation, the analysis of trapped modes and of the backgrounds induced by single beam and luminosity effects giving an estimate of the losses in the interaction region and in the detector.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-eeFACT2018-WEXBA02  
About • paper received ※ 03 November 2018       paper accepted ※ 19 February 2019       issue date ※ 21 April 2019  
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)  
 
WEXBA05 Machine Detector Interface for CEPC detector, photon, solenoid, scattering 217
 
  • S. Bai, J. Gao, H. Geng, D. Wang, Y. Wang, C.H. Yu, Y. Zhang, Y.S. Zhu
    IHEP, Beijing, People’s Republic of China
  
  The Circular Electron Positron Collider (CEPC) is a proposed Higgs factory with center of mass energy of 240 GeV to measure the properties of Higgs boson and test the standard model accurately. Machine Detector Interface (MDI) is the key research area in electron-positron colliders, especially in CEPC, it is one of the criteria to measure the accelerator and detector design performance. In this paper, we will introduce the CEPC superconducting magnets design, solenoid compensation, synchrotron radiation and mask design, detector background, collimator, mechanics assembly etc on, which are the most critical physics problem.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-eeFACT2018-WEXBA05  
About • paper received ※ 29 September 2018       paper accepted ※ 19 February 2019       issue date ※ 21 April 2019  
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)  
 
WEXBA06 Beam Background at SuperKEKB During Phase 2 Operation detector, luminosity, injection, radiation 221
 
  • A. Paladino
    KEK, Tsukuba, Japan
  
  The SuperKEKB accelerator, the upgrade of the KEKB machine, will operate at an unprecedented instantaneous luminosity of 8x1035/cm2/s1, providing the Belle II experiment an expected integrated luminosity of about 50 inverse ab in ten years of operation. With the increased luminosity, the beam background is expected to grow significantly with respect to KEKB, leading, among other effects, to possible damage of detector components and suppression of signal events. We present studies done during the Phase 2 operation of SuperKEKB to evaluate the contribution of each background source, such as Touschek effect, beam-gas scattering, synchrotron radiation, and injection background. We also present studies performed on collimators and other solutions adopted to mitigate beam backgrounds in the interaction region.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-eeFACT2018-WEXBA06  
About • paper received ※ 30 September 2018       paper accepted ※ 19 February 2019       issue date ※ 21 April 2019  
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)