کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8175530 | 1526360 | 2014 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Silica aerogel radiator for use in the A-RICH system utilized in the Belle II experiment
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
ابزار دقیق
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
This paper presents recent progress in the development and mass production of large-area hydrophobic silica aerogels for use as radiators in the aerogel-based ring-imaging Cherenkov (A-RICH) counter, which will be installed in the forward end cap of the Belle II detector. The proximity-focusing A-RICH system is especially designed to identify charged kaons and pions. The refractive index of the installed aerogel Cherenkov radiators is approximately 1.05, and we aim for a separation capability exceeding 4Ï at momenta up to 4Â GeV/c. Large-area aerogel tiles (over 18Ã18Ã2Â cm3) were first fabricated in test productions by pin drying in addition to conventional methods. We proposed to fill the large end-cap region (area 3.5Â m2) with 124 water-jet-trimmed fan-shaped dual-layer-focusing aerogel combinations of different refractive indices (1.045 and 1.055). Guided by the test production results, we decided to manufacture aerogels by the conventional method and are currently proceeding with mass production. In an electron beam test undertaken at the DESY, we confirmed that the K/Ï separation capability of a prototype A-RICH counter exceeded 4Ï at 4Â GeV/c.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 766, 1 December 2014, Pages 212-216
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 766, 1 December 2014, Pages 212-216
نویسندگان
Makoto Tabata, Ichiro Adachi, Nao Hamada, Koji Hara, Toru Iijima, Shuichi Iwata, Hidekazu Kakuno, Hideyuki Kawai, Samo Korpar, Peter Križan, Tetsuro Kumita, Shohei Nishida, Satoru Ogawa, Rok Pestotnik, Luka Šantelj, Andrej Seljak, Takayuki Sumiyoshi,