کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8132836 | 1523361 | 2015 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A new method for reconstructing the muon lateral distribution with an array of segmented counters
ترجمه فارسی عنوان
یک روش جدید برای بازسازی توزیع جانبی میون با یک آرایه از شمارنده های بخش
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کلمات کلیدی
پرتوهای کیهانی انرژی فوق العاده بالا، شمارنده های مون، ترکیب جرم اولیه اشعه کیهانی، عملکرد توزیع جانبی،
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
نجوم و فیزیک نجومی
چکیده انگلیسی
Although the origin of ultra high energy cosmic rays is still unknown, significant progress has been achieved in last decades with the construction of large arrays that are currently taking data. One of the most important pieces of information comes from the chemical composition of primary particles. It is well known that the muon content of air showers generated by the interaction of cosmic rays with the atmosphere is rather sensitive to primary mass. Therefore, the measurement of the number of muons at ground level is an essential ingredient to infer the cosmic ray mass composition. In this work we present a new method for reconstructing the muon lateral distribution function with an array of segmented counters. The energy range from 4Ã1017eV to 2.5Ã1018eV is considered. For a triangular array spaced at 750Â m we found that 450Â m is the optimal distance to evaluate the number of muons. The corresponding statistical and systematic uncertainties of the new and of a previous reconstruction methods are compared. Since the statistical uncertainty of the new reconstruction is less than in the original one, the power to discriminate between heavy and light cosmic ray primaries is enhanced. The detector dynamic range is also extended in the new reconstruction, so events falling closer to a detector can be included in composition studies.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Astroparticle Physics - Volume 65, May 2015, Pages 1-10
Journal: Astroparticle Physics - Volume 65, May 2015, Pages 1-10
نویسندگان
D. Ravignani, A.D. Supanitsky,