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  • This end view of a low-energy collision event at STAR shows particle tracks on the right and detector
    Brookhaven National Laboratory
    This end view of a low-energy collision event at STAR shows particle tracks on the right and detector "hits" from which tracks are derived on the left. Note the abundance of hits recorded by the detector's new inner sectors, which greatly enhance scientists' ability to reconstruct tracks.
  • Part of the team installing new sectors for the inner Time Projection Chamber (iTPC) at STAR (l to r): Saehanseul Oh, Prashanth Shanmuganathan, Robert Soja, Bill Struble, Peng Liu, and Rahul Sharma.
    Brookhaven National Laboratory
    Part of the team installing new sectors for the inner Time Projection Chamber (iTPC) at STAR (l to r): Saehanseul Oh, Prashanth Shanmuganathan, Robert Soja, Bill Struble, Peng Liu, and Rahul Sharma.
  • The STAR detector at the Relativistic Heavy Ion Collider (RHIC) is the size of a small house. It captures snapshots of tracks left by thousands of particles created when two gold ions collide. Upgrades to STAR's inner core now allow the detector to track even more particles, including those with low momentum and those emerging close to the beamline.
    Brookhaven National Laboratory
    The STAR detector at the Relativistic Heavy Ion Collider (RHIC) is the size of a small house. It captures snapshots of tracks left by thousands of particles created when two gold ions collide. Upgrades to STAR's inner core now allow the detector to track even more particles, including those with low momentum and those emerging close to the beamline.
  • A side view of particle tracks (left) and hits (right) from a collision in STAR, as recorded by the new iTPC sectors (top) compared to the old sectors (bottom). Notice how the new sectors record more hits per track, especially close to the beamline, as well as tracks at more forward and rearward angles (more to the left and right in this view).
    Brookhaven National Laboratory
    A side view of particle tracks (left) and hits (right) from a collision in STAR, as recorded by the new iTPC sectors (top) compared to the old sectors (bottom). Notice how the new sectors record more hits per track, especially close to the beamline, as well as tracks at more forward and rearward angles (more to the left and right in this view).
  • Mounting 1500 thin wires arrayed in three layers on each of the 24 new iTPC sectors took patience, practice, and precision.
    Shandong University
    Mounting 1500 thin wires arrayed in three layers on each of the 24 new iTPC sectors took patience, practice, and precision.
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