Speakers
Prof.
Hanrong Wu
(Institute of High Energy Physics, CAS)Prof.
Huihai He
(Institute of High Energy Physics, CAS)
Description
Detection of GeV photons from GRBs is crucial in understanding the most violent phenomenon in our universe. Due to the limited effective area of space-born experiment, very few GRBs are detected with GeV photons. Large area EAS experiments at high altitude can reach a much larger effective area around 10 GeV, for which single particle technique is usually used to lower the threshold energy but its sensitivity is poor due to losing of primary direction information. To reach an energy threshold as low as 10 GeV and keep the primary direction information at the same time, low multiplicity trigger is required, but random coincidences rather than cosmic ray showers overwhelms the signals, and it is a great challenge for traditional trigger logic and reconstruction algorithm to discriminate the signals from the noises. A new method is developed for LHAASO-WCDA to work under low multiplicity mode. With this technique, the LHAASO detector can even work under multiplicity as low as 2 while keeping the direction information at the same time. The sensitivity and expectation of LHAASO-WCDA with low multiplicity technique to GRBs are presented.
| Registration number following "ICRC2015-I/" | 768 |
|---|---|
| Collaboration | LHAASO |
Primary author
Prof.
Huihai He
(Institute of High Energy Physics, CAS)
Co-author
Prof.
Hanrong Wu
(Institute of High Energy Physics, CAS)
