Study on cosmogenic radioactive production in germanium as a background for future rare event search experiments

Yan, Y. L.; Zhong, Wei-Xin; Lin, Shou-De; Zhu, Jianguo; Qiao, Chen-Kai; Zhang, Lei; Yu, Lei; Yue, Qian; Xing, Haoyang; Liu, Shukui

doi:10.1007/s41365-020-00762-1

Cited by 15 publications

(8 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At CJPL, two gamma counting stations (JP-I and JP-II in the following) are assembled with high-purity germanium crystals, a shielding structure with 10-cm-thick copper and 20-cm-thick lead to reject ambient gamma/neutron background, and a vacuum chamber in order to further reduce air radon [17,18]. The background rate reaches 1.0 counts/min and 0. of JP-I and JP-II.…”

Section: Hpge Counting Stationsmentioning

confidence: 99%

Low radioactive material screening and background control for the PandaX-4T experiment

Qian

Abdukerim

et al. 2022

J. High Energ. Phys.

View full text Add to dashboard Cite

PandaX-4T is a ton-scale dark matter direct detection experiment using a dual-phase TPC technique at the China Jinping Underground Laboratory. Various ultra-low background technologies have been developed and applied to material screening for PandaX-4T, including HPGe gamma spectroscopy, ICP-MS, NAA, radon emanation measurement system, krypton assay station, and alpha detection system. Low background materials were selected to assemble the detector. Surface treatment procedures were investigated to further suppress radioactive background. Combining measured results and Monte Carlo simulation, the total material background rates of PandaX-4T in the energy region of 1–25 keVee are estimated to be (9.9 ± 1.9) × 10−3 mDRU for electron recoil and (2.8 ± 0.6) × 10−4 mDRU for nuclear recoil. In addition, natKr in the detector is estimated to be < 8 ppt.

show abstract

Section: Hpge Counting Stationsmentioning

confidence: 99%

Low radioactive material screening and background control for the PandaX-4T experiment

Qian

Abdukerim

et al. 2022

J. High Energ. Phys.

View full text Add to dashboard Cite

show abstract

“…Production rates were evaluated and compared for different locations and altitudes and the results validated against CDEX-1B detector data. • The same approach based on GEANT4 and CRY considering neutrons, protons, muons, and gammas has been followed to optimize the design of a shielding for the transport and storage of high-purity germanium [98]. Six materials (iron, copper, lead, liquid nitrogen, polyethylene, and concrete) have been considered.…”

Section: Activation Studiesmentioning

confidence: 99%

Cosmogenic Activation in Double Beta Decay Experiments

Cebrián

2020

Universe

View full text Add to dashboard Cite

Double beta decay is a very rare nuclear process and, therefore, experiments intended to detect it must be operated deep underground and in ultra-low background conditions. Long-lived radioisotopes produced by the previous exposure of materials to cosmic rays on the Earth’s surface or even underground can become problematic for the required sensitivity. Here, the studies developed to quantify and reduce the activation yields in detectors and materials used in the set-up of these experiments will be reviewed, considering target materials like germanium, tellurium and xenon together with other ones commonly used like copper, lead, stainless steel or argon. Calculations following very different approaches and measurements from irradiation experiments using beams or directly cosmic rays will be considered for relevant radioisotopes. The effect of cosmogenic activation in present and future double beta decay projects based on different types of detectors will be analyzed too.

show abstract

“…Production rates were evaluated and compared for different locations and altitudes and the results validated against CDEX-1B detector data. • The same approach based on GEANT4 and CRY considering neutrons, protons, muons and gammas has been followed to optimize the design of a shielding for the transport and storage of high-purity germanium [97]. Six materials (iron, copper, lead, liquid nitrogen, polyethylene, and concrete) have been considered.…”

Section: Activation Studiesmentioning

confidence: 99%

Cosmogenic activation in double beta decay experiments

Cebrian

2020

Preprint

View full text Add to dashboard Cite

Double beta decay is a very rare nuclear process and, therefore, experiments intended to detect it must be operated deep underground and in ultra-low background conditions. Long-lived radioisotopes produced by the previous exposure of materials to cosmic rays on the Earth's surface or even underground can become problematic for the required sensitivity. Here, the studies developed to quantify and reduce the activation yields in detectors and materials used in the set-up of these experiments will be reviewed, considering target materials like germanium, tellurium and xenon together with other ones commonly used like copper, lead, stainless steel or argon. Calculations following very different approaches and measurements from irradiation experiments using beams or directly cosmic rays will be considered for relevant radioisotopes. The effect of cosmogenic activation in present and future double beta decay projects based on different types of detectors will be analyzed too.

show abstract

Study on cosmogenic radioactive production in germanium as a background for future rare event search experiments

Cited by 15 publications

References 32 publications

Low radioactive material screening and background control for the PandaX-4T experiment

Low radioactive material screening and background control for the PandaX-4T experiment

Cosmogenic Activation in Double Beta Decay Experiments

Cosmogenic activation in double beta decay experiments

Contact Info

Product

Resources

About