نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه فیزیک، دانشکده علوم، دانشگاه بیرجند، صندوق پستی: 9717434765، بیرجند – ایران

2 پژوهشکده پلاسما و گداخت هسته‌ای، پژوهشگاه علوم و فنون هسته‌ای، سازمان انرژی اتمی، صندوق پستی: 51113-14399، تهران-ایران

چکیده

رآکتورهای ماژولار کوچک SMR و واداشته توسط شتاب‌­دهنده ADS به دلیل دارا بودن ویژگی‌­های منحصر به فرد، توسط بسیاری از پژوهش­گران در سراسر جهان مورد مطالعه و بررسی قرار می­‌گیرند. در این پژوهش، هدف فوتونوترونی مناسب برای رآکتور ماژولار کوچک هولوس با استفاده از کد 6/2 MCNPX طراحی و بهینه شد. بردهای تقریب کندشدگی پیوسته (CSDA) الکترون‌­های عبوری از تانتالیم، تنگستن، جیوه، سرب و سرب- بیسموت بررسی شدند. آهنگ تولید و نشت نوترون و فوتون، مقدار ذخیره و انباشت گرمای حاصل از نوترون و فوتون در فرایند بمباران الکترونی اهدافی از جنس تانتالیم، تنگستن، جیوه، سرب و سرب- بیسموت با انرژی­های الکترونی 100 تا MeV 1000 محاسبه شدند. موارد دیگری مانند بهینه‌­­سازی ابعاد هدف فوتونوترونی به ازای الکترون­‌های 20 و MeV 200 و انتخاب انرژی بهینه الکترون­‌های فرودی برای هدف فوتونوترونی با ابعاد بهینه نیز مورد بررسی قرار گرفتند.
 
 
 

کلیدواژه‌ها

عنوان مقاله [English]

Design and optimization of photoneutron target for use in a new generation of accelerator driven subcritical reactors

نویسندگان [English]

  • S. Arhami 1
  • M. M. Firoozabadi 1
  • Z. Gholamzadeh 2

1 Department of Physics, Faculty of Science, University of Birjand, P.O.BOX: 9717434765, Birjand - Iran

2 Plasma and Nuclear Fusion Research School, Nuclear Science and Technology Research Institute, AEOI, P.O. Box: 14399-51113, Tehran, Iran

چکیده [English]

Because of many special benefits of the Small Modular Reactors (SMRs) and the Accelerator Driven Subcritical Reactors (ADSRs), they are subject of a large number of studies all over the world. In the present work, the ADS photoneutron target for Holos reactor was designed and optimized by using MCNPX2.6 code. The Continuous Slowing Down Approximation (CSDA) ranges of passing electrons through tantalum, tungsten, mercury, lead and lead-bismuth were investigated. The production and leakage rates for neutrons and photons, and therefore, the deposited heat from neutrons and photons were calculated considering the electron beam bombardment of tantalum, tungsten, mercury, lead and lead-bismuth targets at beam energies of 100–1000 MeV. Other factors such as the optimization of photoneutron target dimensions for 20 and 200 MeV electron beams, and choosing of the optimal energy of incident electrons for the optimized photoneutron target were examined.

کلیدواژه‌ها [English]

  • Small modular reactor
  • Accelerator driven sub-critical reactor
  • Photoneutron target
  • CSDA range
  • MCNPX2.6 code
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