XeSAT2022 - International Workshop on Applications of Noble Gas Xenon to Science and Technology

Session

Fundamental measurements session, chair Fernando Amaro

26 mai 2022, 13:30

Main auditorium

67. Invited: Studies of Neutral Bremsstrahlung emission in Xenon, C.M.B. Monteiro

Cristina M Bernardes Monteiro (University of Coimbra)

26/05/2022 13:30

68. A measurement of the mean electronic excitation energy of liquid xenon, Kevin Thieme

Kevin Thieme (University of Hawai'i at Mānoa)

26/05/2022 14:00

15. The DireXeno Experiment - Measuring the Temporal and Directional Structure of Scintillation from Liquid Xenon

Gera Koltman (PhD student)

26/05/2022 14:15

The scintillation process from Liquid Xenon (LXe) plays a major role in particle detectors. Features of it are used to estimate the energy and the type of the detected particle. An accurate model of the particle energy deposition in the LXe medium and the scintillation following it is crucial for the detector’s background discrimination power and its sensitivity. DireXeno is an experiment that...

83. Primary scintillation in Xe for electrons and alpha-particles, C.A.O. Henriques

C.A.O. Henriques (University of Coimbra)

26/05/2022 14:30

69. The MICRORADON Project, Jose Busto

Jose Busto (CPPM)

26/05/2022 14:45

82. Studies of primary and secondary scintillation yield in krypton, R.D.P. Mano

R.D.P. Mano (University of Coimbra)

26/05/2022 15:00

70. Time and band-resolved scintillation in time projection chambers based on gaseous xenon, Diego Gonzalez Diaz

Diego Gonzalez Diaz (IGFAE)

26/05/2022 15:15

94. Dual-Polarity Ion Drift Chamber: Experimental results with Xe-SF6 mixtures, Afonso Marques

Afonso Marques (LIP)

26/05/2022 15:30

31. A measurement of the mean electronic excitation energy of liquid xenon

Kevin Thieme (University of Hawai'i at Mānoa)

Liquid xenon is widely deployed as target in particle detectors for rare event searches. The measurement of the occurring scintillation light and ionisation charge caused by a particle interaction allows for the determination of the associated recoil energy. A precise reconstruction of the deposited energy requires calibrations of the energy scale of the detector by means of radioactive...

81. Primary scintillation in Xe for electrons and alpha-particles

Carlos Henriques

Xenon scintillation has been widely used in rare event detection experiments, such as neutrinoless double beta decay and dark matter [1,2]. Yet, experimental values on the primary scintillation yield in the absence of recombination remain scarce and dispersed. The mean energy required to produce a vacuum ultraviolet scintillation photon (Wsc) in gaseous xenon has been measured in the range of...

79. Studies of Neutral Bremsstrahlung emission in Xenon

Cristina M Bernardes Monteiro (University of Coimbra)

We have measured, for the first time in pure xenon, non-excimer-based secondary scintillation, Neutral Bremsstrahlung (NBrS), in a dedicated setup based on a Gas Proportional Scintillation Counter.
The emission of NBrS by drifting electrons occurs even for electric field values below the gas excitation threshold. We have shown the presence of NBrS in the NEXT-White TPC, at present the...

80. Studies of primary and secondary scintillation yield in krypton

R.D.P. Mano (University of Coimbra)

The krypton electroluminescence yield was studied, at room temperature, as a function of electric field in the gas scintillation gap. A large area avalanche photodiode has been used to allow the simultaneous detection of the electroluminescence pulses as well as the direct interaction of x-rays, the latter being used as a reference for the calculation of the number of charge carriers produced...

27. The MICRORADON Projet

Prof. Jose Busto (CPPM)

The radioactive background induced by 222Rn and its progeny is often the main constraint on the sensitivity of many low-energy and very low-count experiments in particle and astroparticle physics, and requires a radon concentration at the level of a few atoms per m3 or per tonne.

In this context, the objective of the MICRORADON project is to study the fundamental properties of Radon, under...

36. Time and band-resolved scintillation in time projection chambers based on gaseous xenon

Diego González-Díaz

Scintillation in modern xenon detectors makes use, almost exclusively, of the xenon second continuum, but there is nowadays abundant evidence of other subdominant contributions like the third continuum or neutral bremsstrahlung, whose characteristic features are dominant in some conditions, and that might be technologically usable. We report time and band-resolved measurements of the primary...