Measurement of Ion Mobilities for the Ion-TPC of NvDEx Experiment

Liang, Tianyu; Zhan, Meiqiang; Wang, Hulin; Wei, Xianglun; Zhang, Dongliang; Liu, Jun; Lu, Chengui; Hu, Qiang; Yang, Yichen; Gao, Chaosong; Xiao, Le; Sun, Xiangming; Liu, Feng; Zhao, Chengxin; Qiu, Hao; Chen, Kai

doi:10.3390/universe11050163

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Open AccessArticle

Measurement of Ion Mobilities for the Ion-TPC of NvDEx Experiment

by

Tianyu Liang

¹

,

Meiqiang Zhan

²,

Hulin Wang

^1,*,

Xianglun Wei

³,

Dongliang Zhang

¹,

Jun Liu

¹,

Chengui Lu

^3,*,

Qiang Hu

³,

Yichen Yang

³,

Chaosong Gao

¹,

Le Xiao

¹,

Xiangming Sun

¹,

Feng Liu

¹,

Chengxin Zhao

³,

Hao Qiu

³ and

Kai Chen

^1,*

¹

PLAC, Key Laboratory of Quark & Lepton Physics (MOE), Central China Normal University, 152 Luoyu Rd., Wuhan 430000, China

²

Institute of Nuclear Science and Technology, Sichuan University, 29 Wangjiang Rd., Chengdu 610000, China

³

Institute of Modern Physics, Chinese Academy of Sciences, 509 Nanchang Rd., Lanzhou 730000, China

^*

Authors to whom correspondence should be addressed.

Universe 2025, 11(5), 163; https://doi.org/10.3390/universe11050163

Submission received: 9 April 2025 / Revised: 12 May 2025 / Accepted: 15 May 2025 / Published: 16 May 2025

(This article belongs to the Special Issue Exploring Double Beta Decay: Probing Fundamental Properties of Neutrinos and Beyond)

Download Review Reports Versions Notes

Abstract

In the N

ν

DEx collaboration, a high-pressure gas TPC is being developed to search for the neutrinoless double beta decay. The use of electronegative

^{82} {SeF}_{6}

gas mandates an ion-TPC. The reconstruction of the z coordinate is to be realized by exploiting the feature of multiple species of charge carriers. As the initial stage of the development, we studied the properties of the

{SF}_{6}

gas, which is non-toxic and has a similar molecular structure to

{SeF}_{6}

. In the paper, we present the measurement of drift velocities and mobilities of the majority and minority negative charge carriers found in

{SF}_{6}

at a pressure of 750 Torr, slightly higher than the local atmospheric pressure. The reduced fields range between 3.0 and 5.5 Td. This was performed using a laser beam to ionize the gas inside a small TPC, with a drift length of 3.7 cm. A customized charge-sensitive amplifier was developed to read out the anode signals induced by the slowly drifting ions. The closure test of the reconstruction of the z coordinate using the difference in the velocities of the two carriers was also demonstrated.

Keywords: double beta decay detectors; gaseous imaging and tracking detectors; Time projection chambers (TPC); charge transport and multiplication in gas

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MDPI and ACS Style

Liang, T.; Zhan, M.; Wang, H.; Wei, X.; Zhang, D.; Liu, J.; Lu, C.; Hu, Q.; Yang, Y.; Gao, C.; et al. Measurement of Ion Mobilities for the Ion-TPC of NvDEx Experiment. Universe 2025, 11, 163. https://doi.org/10.3390/universe11050163

AMA Style

Liang T, Zhan M, Wang H, Wei X, Zhang D, Liu J, Lu C, Hu Q, Yang Y, Gao C, et al. Measurement of Ion Mobilities for the Ion-TPC of NvDEx Experiment. Universe. 2025; 11(5):163. https://doi.org/10.3390/universe11050163

Chicago/Turabian Style

Liang, Tianyu, Meiqiang Zhan, Hulin Wang, Xianglun Wei, Dongliang Zhang, Jun Liu, Chengui Lu, Qiang Hu, Yichen Yang, Chaosong Gao, and et al. 2025. "Measurement of Ion Mobilities for the Ion-TPC of NvDEx Experiment" Universe 11, no. 5: 163. https://doi.org/10.3390/universe11050163

APA Style

Liang, T., Zhan, M., Wang, H., Wei, X., Zhang, D., Liu, J., Lu, C., Hu, Q., Yang, Y., Gao, C., Xiao, L., Sun, X., Liu, F., Zhao, C., Qiu, H., & Chen, K. (2025). Measurement of Ion Mobilities for the Ion-TPC of NvDEx Experiment. Universe, 11(5), 163. https://doi.org/10.3390/universe11050163

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Measurement of Ion Mobilities for the Ion-TPC of NvDEx Experiment

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