First testing of the CALIFA Barrel Demonstrator

Pietras, B.; Winkel, M.; Álvarez‐Pol, H.; Casarejos, E.; Cederkäll, J.; Cortina-Gil, D.; Fernández, Gonzalo García; Gernhäuser, R.; Golubev, P.; González, D.; Hartig, A.-L.; Izquierdo, Pablo; Klenze, P.; Bleis, T. Le; Nácher, E.; Perea, Á.; Remmels, P.; Ribeiro, G.; Teubig, P.; Vilán, José Antonio Vilán; Yañez, P.

doi:10.1016/j.nima.2016.01.032

Cited by 8 publications

(17 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For CsI(Tl), the scintillation response to highly ionizing particles is known to be non-linear due to the Birk's scintillation efficiency as well as due to changes in the scintillation pulse shape [4,20]. In Figure 4 two versions of simulation are overlaid to illustrate the impact that including the full CsI(Tl) scintillation response in simulation has on the simulated pion cluster energy distributions.…”

Section: Charged Pionsmentioning

confidence: 99%

See 1 more Smart Citation

CsI(Tl) pulse shape discrimination with the Belle II electromagnetic calorimeter as a novel method to improve particle identification at electron–positron colliders

Longo

Roney

Cunliffe

et al. 2020

Nuclear Instruments and Methods in Physics Research Section A:

View full text Add to dashboard Cite

This paper describes the implementation and performance of CsI(Tl) pulse shape discrimination for the Belle II electromagnetic calorimeter, representing the first application of CsI(Tl) pulse shape discrimination for particle identification at an electron-position collider. The pulse shape characterization algorithms applied by the Belle II calorimeter are described. Control samples of γ, µ + , π ± , K ± and p/p are used to demonstrate the significant

show abstract

Section: Charged Pionsmentioning

confidence: 99%

“…This is caused by the presence of energy deposits from secondary protons produced in the pion hadronic showers. Protons are measured to have a Birk's scintillation efficiency greater than one [4,20] causing the measured cluster energy, which is proportional to the scintillation yield, to increase.…”

Section: Charged Pionsmentioning

confidence: 99%

CsI(Tl) pulse shape discrimination with the Belle II electromagnetic calorimeter as a novel method to improve particle identification at electron–positron colliders

Longo

Roney

Cunliffe

et al. 2020

Nuclear Instruments and Methods in Physics Research Section A:

View full text Add to dashboard Cite

show abstract

“…Energy deposited spectrum for recorded pulses in 67.0 MeV proton run data. Note that the peak of the pulse amplitude spectrum for the protons, presented in electron equivalent energy units, is higher than the proton kinetic energy due to the Birk's scintillation efficiency of CsI(Tl) for high dE dx energy deposits [22][23][24][25]. The Birk's scintillation efficiency for the protons is discussed further in Section 5.2.…”

Section: 0 Mev Proton Datamentioning

confidence: 99%

Hadronic vs. electromagnetic pulse shape discrimination in CsI(Tl) for high energy physics experiments

Longo

Roney

2018

J. Inst.

View full text Add to dashboard Cite

A: Pulse shape discrimination using CsI(Tl) scintillators to perform neutral hadron particle identification is explored with emphasis towards application at high energy electronpositron collider experiments. Through the analysis of the pulse shape differences between scintillation pulses from photon and hadronic energy deposits using neutron and proton data collected at TRIUMF, it is shown that the pulse shape variations observed for hadrons can be modelled using a third scintillation component for CsI(Tl), in addition to the standard fast and slow components. Techniques for computing the hadronic pulse amplitudes and shape variations are developed and it is shown that the intensity of the additional scintillation component can be computed from the ionization energy loss of the interacting particles. These pulse modelling and simulation methods are integrated with GEANT4 simulation libraries and the predicted pulse shape for CsI(Tl) crystals in a 5 × 5 array of 5×5×30 cm 3 crystals is studied for hadronic showers from 0.5 and 1 GeV/c K 0 L and neutron particles. Using a crystal level and cluster level approach for photon vs hadron cluster separation we demonstrate proof-of-concept for neutral hadron detection using CsI(Tl) pulse shape discrimination in high energy electron-positron collider experiments.

show abstract

“…The system has full azimuthal coverage, a big detection dynamic range from around 100 keV gamma rays up to 320 MeV protons and an energy resolution below 6% at 1 MeV after a gamma ray event reconstruction. Some modular fractions of the barrel section were constructed in recent years and extensively tested under different environments and conditions [4,5].…”

Section: Introductionmentioning

confidence: 99%

“…Hence the optical properties of the material play a very important role in the overall efficiency of the system. The degraded detection units were initially included in the first modules of the CALIFA Demonstrator already evaluated and tested under realistic conditions in 2014 [4]. For the present study, detection units with that degradation are known as Group A.…”

Section: Introductionmentioning

confidence: 99%

Performance recovery of long CsI(Tl) scintillator crystals with APD-based readout

Cabanelas

González

Álvarez‐Pol

et al. 2020

Nuclear Instruments and Methods in Physics Research Section A:

Self Cite

View full text Add to dashboard Cite

CALIFA is the high efficiency and energy resolution calorimeter for the R 3 B experiment at FAIR, intended for detecting high energy light charged particles and gamma rays in scattering experiments, and is being commissioned during the Phase-0 experiments at FAIR, between 2018 and 2020. It surrounds the reaction target in a segmented configuration with 2432 detection units made of long CsI(Tl) finger-shaped scintillator crystals. CALIFA has a 10 year intended operational lifetime as the R 3 B calorimeter, necessitating measures to be taken to ensure enduring performance. In this paper we present a systematic study of two groups of 6 different detection units of the CALIFA detector after more than four years of operation. The energy resolution and light output yield are evaluated under different conditions. Tests cover the aging of the first detector units assembled and investigates recovery procedures for degraded detection units. A possible reason for the observed degradation is given, pointing to the crystal-APD coupling.

show abstract

First testing of the CALIFA Barrel Demonstrator

Cited by 8 publications

References 22 publications

CsI(Tl) pulse shape discrimination with the Belle II electromagnetic calorimeter as a novel method to improve particle identification at electron–positron colliders

CsI(Tl) pulse shape discrimination with the Belle II electromagnetic calorimeter as a novel method to improve particle identification at electron–positron colliders

Hadronic vs. electromagnetic pulse shape discrimination in CsI(Tl) for high energy physics experiments

Performance recovery of long CsI(Tl) scintillator crystals with APD-based readout

Contact Info

Product

Resources

About