31. More properly called particle detectors or trace detectors, these devices are perhaps best known from their use in airports. 32. Separate particle detectors measure the quantum states of each particle and send the resulting signal to a coincidence counter. 33. Finally, the burst of ordinary particles that results will race through the particle detectors spaced around the RHIC ring. 34. In order to limit the natural or artificial background noise, most particle detector based observatories are built deep underground. 35. For instance, people working on accelerator physics might seek to build better particle detectors for research in theoretical physics. 36. Additionally the satellite carries the Nuklon high-energy particle detector developed by the Moscow State University for detecting cosmic radiation. 37. For his cosmic ray research, Reynolds attempted to grow large organic crystal scintillators to use as ionized particle detectors . 38. Including the computers and monitors, the particle detectors , which looked like homemade science experiments, cost nearly $ 2, 000 each. 39. Some of the findings arose near where he stood beside a four-story, $ 100 million particle detector known as Phenix. 40. CERN physicists, who generally favor an extension for their existing equipment, met Tuesday to present data from their particle detectors .
