Keyword: photon
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  • K. Ha, W.X. Cheng, L.R. Dalesio, J.H. De Long, Y. Hu, P. Ilinski, J. Mead, D. Padrazo, S. Seletskiy, O. Singh, R.M. Smith, Y. Tian
    BNL, Upton, Long Island, New York, USA
  • G. Shen
    FRIB, East Lansing, Michigan, USA
  Funding: Work supported by DOE contract No: DE-AC02-98CD10886
At National Synchrotron Light Source-II (NSLS-II), a field-programmable gate array (FPGA) based global active interlock system (AIS) has been commissioned and used for beam operations. The main propose of AIS is to protect insertion devices (ID) and vacuum chambers from the thermal damage of high density synchrotron radiation power. This report describes the status of AIS hardware, software architectures and operation experience.
slides icon Slides TUC3O05 [21.147 MB]  
WEPGF050 Integrated Detector Control and Calibration Processing at the European XFEL detector, controls, framework, GUI 1
  • A. Münnich, S. Hauf, B.C. Heisen, F. Januschek, M. Kuster, P.M. Lang, N. Raab, T. Rüter, J. Sztuk, M. Turcato
    XFEL. EU, Hamburg, Germany
  The European X-ray Free Electron Laser is a high-intensity X-ray light source currently being constructed in the area of Hamburg, that will provide spatially coherent X-rays in the energy range between 0.25 keV and 25 keV. The machine will deliver 10 trains/s, consisting of up to 2700 pulses, with a 4.5 MHz repetition rate. The LPD, DSSC and AGIPD detectors are being developed to provide high dynamic-range Mpixel imaging capabilities at the mentioned repetition rates. A consequence of these detector characteristics is that they generate raw data volumes of up to 15 Gbyte/s. In addition the detector's on-sensor memory-cell and multi-/non-linear gain architectures pose unique challenges in data correction and calibration, requiring online access to operating conditions and control settings. We present how these challenges are addressed within XFEL's control and analysis framework Karabo, which integrates access to hardware conditions, acquisition settings (also using macros) and distributed computing. Implementation of control and calibration software is mainly in Python, using self-optimizing (py) CUDA code, numpy and iPython parallels to achieve near-real time performance for calibration application.  
poster icon Poster WEPGF050 [3.425 MB]  
THHB2O03 The Global Trigger with Online Vertex Fitting for Low Energy Neutrino Research experiment, electronics, detector, simulation 1
  • G.H. Gong, H. Li, T. Xue
    Tsinghua University, Beijing, People's Republic of China
  • H. Gong
    TUB, Beijing, People's Republic of China
  Neutrino research is of great importance for particle physics, astrophysics and cosmology, the JUNO (Jiangmen Underground Neutrino Observatory) is a multi-purpose neutrino experiment for neutrino mass ordering determination and precision measurement of neutrino mixing parameters. A brand new global trigger scheme with online vertex fitting has been proposed, aiming at the ultra-low anti-neutrino energy threshold as down to 0.1MeV which is essential for the study of solar neutrino and elastic scattering of neutrinos on supernova burst. With this scheme, the TOF (time of flight) difference of photons fly through the liquid media from the interaction point to the surface of central detector can be corrected online with real time, the width of trigger window to cover the whole period of a specific neutrino generated photons can be significantly reduced which lessen the integrated dark noise introduced from the large amount of PMT devices hence a lower energy threshold can be achieved. The scheme is compatible, flexible and easy to implement, it can effectively extend the physics potential of the JUNO for low energy neutrino research topics.  
slides icon Slides THHB2O03 [4.252 MB]