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SUMMARY:The knee of the proton spectrum
DTSTART;VALUE=DATE-TIME:20151027T050000Z
DTEND;VALUE=DATE-TIME:20151027T052000Z
DTSTAMP;VALUE=DATE-TIME:20260412T171344Z
UID:indico-contribution-908@indico.icrr.u-tokyo.ac.jp
DESCRIPTION:Speakers: Zhen Cao (IHEP\, Chinese Academy of Sciences)\nUsing
  a LHAASO wide field of view Cherenkov telescope and the ARGO-YBJ resistiv
 e plate chamber array as 4300m a.s.l.\, the energy spectrum of cosmic hydr
 ogen and helium nuclei (H&He) between 100 TeV and 3 PeV is measured. A cle
 ar knee feature is observed around 630 TeV in the spectrum with an energy 
 resolution of about 25%. Below 300 TeV\, the data from direct charge measu
 rements provide rather precise measurements of fluxes of H\, He and other 
 heavier nuclei. In this paper\, we discuss the knee feature of the pure pr
 oton spectrum indicated by the newly published H&He spectrum. We also esti
 mate the systematic errors of the spectrum measurement with a mixture of n
 uclei. We propose a way to minimize the systematic error in measurement of
  the knee feature of the cosmic ray spectrum.\n\nhttps://indico.icrr.u-tok
 yo.ac.jp/event/23/contributions/908/
LOCATION: Room 3.4
URL:https://indico.icrr.u-tokyo.ac.jp/event/23/contributions/908/
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