Details

Autor(en) / Beteiligte

• An, Q.
• Bai, Y.X.
• Bastieri, D.
• Cai, H.
• Cai, J.T.
• Cao, Zhen
• Chen, Liang
• Chen, Long
• Chen, S.Z.
• Chen, T.L.
• Chen, X.L.
• Cheng, N.
• Cui, S.W.
• Cui, X.H.
• Dai, B.Z.
• Danzengluobu
• della Volpe, D.
• Feng, Y.L.
• Gan, H.Y.
• Gao, L.Q.
• Gao, W.
• Gong, G.H.
• Gu, M.H.
• Guo, X.L.
• He, H.H.
• He, Y.
• Hor, Y.K.
• Hu, H.B.
• Huang, D.H.
• Huang, Q.L.
• Huang, W.H.
• Ji, X.L.
• Jia, H.Y.
• Jiang, K.
• Jiang, Z.J.
• Jin, C.
• Li, Cong
• Li, Cheng
• Li, F.
• Li, H.B.
• Li, Zhuo
• Liang, E.W.
• Lin, S.J.
• Liu, C.
• Liu, J.S.
• Liu, J.Y.
• Liu, R.Y.
• Long, W.J.
• Ma, B.Q.
• Ma, L.L.
• Mao, J.R.
• Masood, A.
• Pang, B.Y.
• Pattarakijwanich, P.
• Pei, Z.Y.
• Qiao, B.Q.
• Qin, J.J.
• Shchegolev, O.
• Sheng, X.D.
• Song, H.C.
• Su, Y.
• Sun, Q.N.
• Sun, X.N.
• Tang, Z.B.
• Tian, W.W.
• Wang, B.D.
• Wang, H.G.
• Wang, J.C.
• Wang, J.S.
• Wang, X.Y.
• Wang, Y.D.
• Wei, D.M.
• Wen, T.
• Wu, H.R.
• Wu, S.
• Xiang, G.M.
• Xin, Y.L.
• Xue, L.
• Yan, D.H.
• Yang, C.W.
• Yang, J.Y.
• Yang, S.B.
• You, X.H.
• Zeng, H.D.
• Zhang, H.M.
• Zhang, H.Y.
• Zhang, R.
• Zhang, S.R.
• Zhang, S.S.
• Zhang, Y.F.
• Zhang, Yi
• Zhao, B.
• Zhao, J.
• Zhao, L.
• Zhao, S.P.
• Zheng, Y.
• Zhou, J.N.
• Zhu, C.G.
• Zhu, F.R.
• Zhu, K.J.

Titel

Absolute calibration of LHAASO WFCTA camera based on LED

Ist Teil von

• Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 2022-01, Vol.1021, p.165824, Article 165824

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2022

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The main scientific goal of the LHAASO WFCTA experiment is to measure the cosmic ray energy spectra and composition from 10 TeV to 1 EeV. Cherenkov photons in the extensive air shower measured by the SiPM camera of Cherenkov telescopes can be used to reconstruct the cosmic ray energy. The absolute calibration of the camera is a crucial step to achieve the accurate measurement of the cosmic ray energy spectrum. A multi-wavelength cylindrical illuminator based on LEDs is developed and mounted inside the telescope to calibrate and monitor the camera, and the illuminator’s stability is better than 0.5% under the temperature variation from -26 to 26 °C. A portable probe with a single photoelectron resolution of 21.6% is developed. After calibration by National Institute of Metrology, China (NIM), the probe is taken to the LHAASO site to measure the absolute photon density of the cylindrical illuminator inside the telescope. Based on the illuminator with known photon density, the photon conversion factor of the camera can be calibrated, and the overall calibration uncertainty is less than 2.6%.