Near-infrared scintillation of liquid argon

Sem informaçãoSince the 1970s it has been known that noble gases scintillate in the near infrared (NIR) region of the spectrum (0.7 mu m < lambda < 1.5 mu m). More controversial has been the question of the NIR light yield for condensed noble gases. We first present the motivation for using the NIR scintillation in liquid argon detectors, then briefly review early as well as more recent efforts and finally show encouraging preliminary results of a test performed at Fermilab.Since the 1970s it has been known that noble gases scintillate in the near infrared (NIR) region of the spectrum (0.7 mu m < lambda < 1.5 mu m). More controversial has been the question of the NIR light yield for condensed noble gases. We first present the motivation for using the NIR scintillation in liquid argon detectors, then briefly review early as well as more recent efforts and finally show encouraging preliminary results of a test performed at Fermilab.1119Sem informaçãoSem informaçãoSem informaçãoConference on Light Detection in Noble Elements28 a 30 de Agosto de 2015Albany, NYWe would like to thank Michael Reid for a GEANT4 simulation that helped us check the soundness of our results. The technical staff at the Fermilab Proton Assembly Building is thanked for their support. Fermilab is Operated by Fermi Research Alliance, LLC under Contract No. De-AC02-07CH11359 with the United States Department of Energy