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تسجيل مستخدم جديدالكالوريميتر الهادرون المصقول بالبلاط الشمعي الجديد مع قراءة SiPM
Scintillator Tile Hadron Calorimeter with Novel SiPM Readout
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تأليف
M.Danilov
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أجريت التعاونات CALICE حاليا بناء مختبر للكالوريمتر الهادروني (HCAL) مع 7620 لوحات السينتيلاتور المقروءة بواسطة المستشعرات الضوئية الجديدة - Silicon Photomultipliers (SiPMs). هذا النموذج هو الأول يستخدم SiPMs على نطاق واسع. نقدم تصميم HCAL ونقوم بالإبلاغ عن الخصائص المقياسة لأكثر من 10 آلاف SiPM. نناقش كفاءة SiPM والحصول على الضغط، وتعامل الضوضاء، ومعدل الضوضاء بالاعتماد على جهد الإشارة ودرجة الحرارة، بما في ذلك الانحراف في هذه المعلمات. نحلل أسباب رفض SiPM ونقدم نتائج الدراسات الطويلة الأجل للاستقرار. تم الإبلاغ عن أول القياسات لصلابة الإشعاع ل SiPM. نقارن خصائص SiPM مع خصائص الأجهزة المشابهة، MRS APD و MPPC. تم التحقق من إمكانية جعل اللوحات أصغر وأخف وقراءتها بدون الأشعة الضوئية الطويلة الموجات الألياف.
The CALICE collaboration is presently constructing a test hadron calorimeter (HCAL) with 7620 scintillator tiles read out by novel photo-detectors - Silicon Photomultipliers (SiPMs). This prototype is the first device which uses SiPMs on a large scale. We present the design of the HCAL and report on measured properties of more than 10 thousand SiPMs. We discuss the SiPM efficiency, gain, cross-talk, and noise rate dependence on bias voltage and temperature, including the spread in these parameters. We analyze the reasons for SiPM rejection and present the results of the long term stability studies. The first measurements of the SiPM radiation hardness are presented. We compare properties of SiPM with the properties of similar devices, MRS APD and MPPC. A possibility to make the tiles thinner and to read them out without WLS fibers has been studied.
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