Radon Concentration Measurement with a High-Sensitivity Radon Detector at the Yemilab

التفاصيل البيبلوغرافية
العنوان: Radon Concentration Measurement with a High-Sensitivity Radon Detector at the Yemilab
المؤلفون: Seo, Kyungmin, Kim, Hyunsoo, Kim, Yeongduk, Lee, Hyeyoung, Lee, Jaison, Lee, Moo Hyun, So, Jungho, Yoon, Sangcheol, Yoon, Youngsoo
سنة النشر: 2024
المجموعة: Astrophysics
High Energy Physics - Experiment
Nuclear Experiment
Physics (Other)
مصطلحات موضوعية: Physics - Instrumentation and Detectors, Astrophysics - Instrumentation and Methods for Astrophysics, High Energy Physics - Experiment, Nuclear Experiment
الوصف: The radiation emitted from radon is a critical background in rare event search experiments conducted at the Yemi Underground Laboratory (Yemilab) in Jeongseon, Korea. A Radon Reduction System(RRS) has been developed and installed in Yemilab to reduce radon concentration in the air. The RRS primarily provides a purified air of 50 m3/h to the cleanroom used to assemble crystal detectors in the AMoRE, a neutrinoless double beta decay search experiment. RRS can reduce the radon level by a factor of 300, so a high-sensitivity radon detector was required. A highly sensitive radon detector was constructed using a 70 L chamber with a large PIN photodiode to measure radon concentration in the purified air. The radon detector shows an excellent resolution of 72 keV (FWHM) for 6.003 MeV alphas from 218Po decay and a sensitivity down to 23.8 +- 2.1 mBq/m3 with a boil-off N2 gas sample. The radon concentration level from the RRS measured by the radon detector was below 0.29 Bq/m3 with a reduction factor of about 300.
Comment: 16 pages, 12 figures, 2 tables, to be published in JINST
نوع الوثيقة: Working Paper
URL الوصول: http://arxiv.org/abs/2403.07405
رقم الأكسشن: edsarx.2403.07405
قاعدة البيانات: arXiv