Anti-Coincidence System

Target entity: Anti-Coincidence System
Context triple: [AGILE gamma-ray mission, hasInstrument, Anti-Coincidence System]

• A. Transition Radiation Detector
  The Transition Radiation Detector is a particle physics instrument that identifies high-energy charged particles—especially electrons—by detecting the X-ray photons they emit when crossing boundaries between materials at relativistic speeds.
• B. Time Projection Chamber
  The Time Projection Chamber is a large gaseous detector used in particle physics experiments to track and identify charged particles in three dimensions with high precision.
• C. Inner Tracking System
  The Inner Tracking System is a high-precision silicon detector in the ALICE experiment at CERN’s Large Hadron Collider, used to track and identify particles produced in heavy-ion collisions near the interaction point.
• D. High Energy Stereoscopic System
  The High Energy Stereoscopic System (H.E.S.S.) is a ground-based array of imaging atmospheric Cherenkov telescopes in Namibia used to study very-high-energy gamma rays from cosmic sources such as supernova remnants, pulsar wind nebulae, and active galactic nuclei.
• E. Silicon Strip Detector
  A Silicon Strip Detector is a type of semiconductor particle detector that uses parallel strips of silicon to precisely measure the position and trajectory of charged particles in high-energy physics experiments.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: Anti-Coincidence System
Target entity description: The Anti-Coincidence System is a detector subsystem used in gamma-ray astronomy instruments to identify and reject background charged particles, improving the accuracy of high-energy photon measurements.

• A. Transition Radiation Detector
  The Transition Radiation Detector is a particle physics instrument that identifies high-energy charged particles—especially electrons—by detecting the X-ray photons they emit when crossing boundaries between materials at relativistic speeds.
• B. Time Projection Chamber
  The Time Projection Chamber is a large gaseous detector used in particle physics experiments to track and identify charged particles in three dimensions with high precision.
• C. Inner Tracking System
  The Inner Tracking System is a high-precision silicon detector in the ALICE experiment at CERN’s Large Hadron Collider, used to track and identify particles produced in heavy-ion collisions near the interaction point.
• D. High Energy Stereoscopic System
  The High Energy Stereoscopic System (H.E.S.S.) is a ground-based array of imaging atmospheric Cherenkov telescopes in Namibia used to study very-high-energy gamma rays from cosmic sources such as supernova remnants, pulsar wind nebulae, and active galactic nuclei.
• E. Silicon Strip Detector
  A Silicon Strip Detector is a type of semiconductor particle detector that uses parallel strips of silicon to precisely measure the position and trajectory of charged particles in high-energy physics experiments.
• F. None of above. chosen