Low Radioactivity Techniques (LRT2024)

Session

Neutron Background Mitigation

4 Oct 2024, 08:30

PAU (Kraków, Poland)

Conveners

Neutron Background Mitigation

• Sean Paling

95. Measuring underground neutrons with the high-efficiency neutron spectrometry array (HENSA): current status and future prospects

Ariel Tarifeno-Saldivia (Instituto de Fisica Corpuscular (CSIC-UV))

04/10/2024, 08:30

Talk

TBA

62. Calculation and Mitigation of Neutron-Induced Backgrounds in Rare Event Search Experiments

Roberto Santorelli (CIEMAT - Madrid)

04/10/2024, 08:55

Talk

Neutron-induced backgrounds pose a significant challenge in experiments designed to detect rare events, such as dark matter interactions and neutrinoless double-beta decay. This talk discusses the characteristics of these backgrounds, focusing on neutron generation via spontaneous fission and α,n reactions. These processes are particularly critical in underground experiments, where the...

57. Optimised neutron yield calculations from (α,n) reactions with the modified SOURCES4 code

Vitaly Kudryavtsev (University of Sheffield)

04/10/2024, 09:20

Talk

The sensitivity of underground experiments searching for rare events such as dark matter, neutrinoless double-beta decay or low-energy neutrinos is affected by the background due to neutrons from spontaneous fission and (α,n) reactions. Neutron yields and energy spectra due to these reactions can be calculated using a variety of codes. In this paper we present new calculations of neutron...

14. Development of a GAGG-based low-background neutron detector

Giovanni Benato (Gran Sasso Science Institute)

04/10/2024, 09:40

Talk

In rare events experiments, a precise knowledge of the environmental gamma and neutron backgrounds is crucial for the design of appropriate shieldings. The neutron component is often poorly known due to the lack of a scalable detector technology for the measurement of low-flux neutron spectra in a short time.
Thanks to their high gadolinium content, we are investigating the possibility of...

4. Gd-PMMA: a novel neutron tagging technology for low background detectors

Yi Wang (IHEP, CAS)

04/10/2024, 10:00

Talk

Low background detectors, such as those used in direct dark matter searches, require high-efficient neutron veto to reject nuclear recoil backgrounds. Gadolinium-doped polymethyl methacrylate (Gd-PMMA) has emerged as a promising solid neutron tagging material, with high hydrogen content for moderating neutrons and gadolinium content for capturing thermal neutrons and exploiting subsequent...