用于漂移室中宇宙线径迹重建的Cellmap的研究

Study on a Cellmap for the Reconstruction of Cosmic Ray Tracks in Drift Chamber

以L3宇宙线实验的径迹重建为例,讨论了一个在磁谱仪漂移室中对大斜率宇宙线径迹着火点进行重建的Cellmap,并与L3宇宙线实验中已采用的Cellmap进行了比较.对大斜率径迹,用新的Cellmap可以重建出更多的着火点,并且径迹重建χ2量的分布有所改善.

Taking L3 Cosmics experiment (L3 + C) as an example, we discussed a new Cellmap to reconstruct the hit in drift chamber of magnetic spectrometer for the very inclined comic-ray tracks, and compared the reconstruction results with the standard Cellmap of L3 + C. It shows that, for the very inclined cosmic-ray tracks, the new Cellmap can reconstruct more hits than the standard Cellmap, and the distribution of X2 of track reconstruction is also improved.