کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10716074 | 1027529 | 2005 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The aerogel threshold Cherenkov detector for the High Momentum Spectrometer in Hall C at Jefferson Lab
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
ابزار دقیق
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We describe a new aerogel threshold Cherenkov detector installed in the HMS spectrometer in Hall C at Jefferson Lab. The Hall C experimental program in 2003 required an improved particle identification system for better identification of Ï/K/p, which was achieved by installing an additional threshold Cherenkov counter. Two types of aerogel with n=1.030 and n=1.015 allow one to reach â¼10-3 proton and 10-2 kaon rejection in the 1-5Â GeV/c momentum range with pion detection efficiency better than 99% (97%). The detector response shows no significant position dependence due to a diffuse light collection technique. The diffusion box was equipped with 16 Photonis XP4572 photo multiplier tubes (PMTs). The mean number of photo-electrons in saturation was â¼16 and â¼8, respectively. This allows even for separation of slower particles slightly above threshold.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 548, Issue 3, 21 August 2005, Pages 364-374
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 548, Issue 3, 21 August 2005, Pages 364-374
نویسندگان
R. Asaturyan, R. Ent, H. Fenker, D. Gaskell, G.M. Huber, M. Jones, D. Mack, H. Mkrtchyan, B. Metzger, N. Novikoff, V. Tadevosyan, W. Vulcan, S. Wood,