Development of an anti-Compton veto for HPGe detectors operated in liquid argon using silicon photo-multipliers

Csáthy, J. Janicskó; Khozani, H. Aghaei; Caldwell, A.; Liu, X.; Majorovits, B.

doi:10.1016/j.nima.2011.05.070

Cited by 28 publications

(20 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The dark count rate is known to be suppressed by five orders of magnitude at LXe Figure 61 The dark count rate measured at different temperatures (room temperature, 205 K and 165 K). temperature (165 K) [132]. Our test measurements confirm that the dark count rate is reduced down to 1.0-100 Hz for 3 × 3 mm 2 samples at LXe temperature as shown in Fig.61.…”

Section: Temperature Dependencesupporting

confidence: 79%

The design of the MEG II experiment

et al. 2018

View full text Add to dashboard Cite

The MEG experiment, designed to search for the µ + → e + γ decay at a 10 −13 sensitivity level, completed datataking in 2013. In order to increase the sensitivity reach of the experiment by an order of magnitude to the level of 6 × 10 −14 for the branching ratio, a total upgrade, involving substantial changes to the experiment, has been undertaken, known as MEG II. We present both the motivation for the upgrade and a detailed overview of the design of the experiment and of the expected detector performance.

show abstract

Section: Temperature Dependencesupporting

confidence: 79%

The design of the MEG II experiment

et al. 2018

View full text Add to dashboard Cite

show abstract

“…The cryogenic operation results in very low dark count rates, largely eliminating noise concerns. The low temperatures require the use of sensors with a metal quenching resistor, since the large temperature dependence of polysilicon resistors results in excessively long tails in the signal pulses [60,61].…”

Section: Applications In Large-volume Detectorsmentioning

confidence: 99%

Silicon photomultipliers in particle and nuclear physics

Simon

2019

Nuclear Instruments and Methods in Physics Research Section A:

View full text Add to dashboard Cite

Following first large-scale applications in highly granular calorimeters and in neutrino detectors, Silicon Photomultipliers have seen a wide adoption in accelerator-based particle and nuclear physics experiments. Today, they are used for a wide range of different particle detector types, ranging from calorimeters and trackers to particle identification and veto detectors, large volume detectors for neutrino physics and timing systems. This article reviews the current state and expected evolution of these applications, highlighting strengths and limitation of SiPMs and the corresponding design choices in the respective contexts. General trends and adopted technical solutions in the applications are discussed.

show abstract

“…The 3 remaining detectors feature natural isotopic composition. The LAr volume around the array is instrumented with wavelength shifting fibers coupled to silicon photomultipliers (SiPMs) [6,7] and low-activity PMTs. The ability to detect scintillation light allows to reject backgrounds with coincident energy release in HPGe detectors and LAr [8].…”

Section: Gerdamentioning

confidence: 99%

Virtual depth by active background suppression: revisiting the cosmic muon induced background of Gerda Phase II

2018

View full text Add to dashboard Cite

In-situ production of radioisotopes by cosmic muon interactions may generate a non-negligible background for deep underground rare event searches. Previous Monte Carlo studies for the Gerda experiment at Lngs identified the delayed decays of 77 Ge and its metastable state 77m Ge as dominant cosmogenic background in the search for neutrinoless double beta decay of 76 Ge. This might limit the sensitivity of next generation experiments aiming for increased 76 Ge mass at background-free conditions and thereby define a minimum depth requirement. A re-evaluation of the 77(m) Ge background for the Gerda experiment has been carried out by a set of Monte Carlo simulations. The obtained 77(m) Ge production rate is (0.21±0.01) nuclei/(kg·year). After application of state-of-the-art active background suppression techniques and simple delayed coincidence cuts this corresponds to a background contribution of (2.7 ± 0.3) × 10 −6 cts/(keV·kg·year). The suppression achieved by this strategy equals an effective muon flux reduction of more than one order of magnitude. This virtual depth increase opens the way for next generation rare event searches.

show abstract

Development of an anti-Compton veto for HPGe detectors operated in liquid argon using silicon photo-multipliers

Cited by 28 publications

References 15 publications

The design of the MEG II experiment

The design of the MEG II experiment

Silicon photomultipliers in particle and nuclear physics

Virtual depth by active background suppression: revisiting the cosmic muon induced background of Gerda Phase II

Contact Info

Product

Resources

About