Speaker
Description
The HECTOR+ [1] and the PARIS [2] arrays are composed of large volume scintillator crystals and are mainly (but not only) focused on the detection of high-energy gamma-rays.
At the moment, the HECTOR+ array consists of 10 large volume cylindrical (3.5" x 8") LaBr3:Ce crystals. Two detectors are now in Krakow at CCB (Pl) while eight are now located in Osaka (Jp) within the PANDORA project [3]. In Japan they were the main constituents of the SCYLLA array while together with 8 identical detectors from South Africa they form the LPIS array. These detectors have been used in some of the last experimental campaigns in OSAKA coupled to the GRAN RAIDEN spectrometer.
The PARIS array consists of more than 100 phoswich-crystals; each is composed of a 2"x2"x2" cube of LaBr3:Ce or CeBr3:Ce and 2"x2"x6" a NaI rectangular parallelepiped crystal.
Using Analog or Digital electronics it is possible to identify in which crystal the gamma-ray interacted and therefore one could use the front part of PARIS as a very efficient and granular multiplicity filter while the whole PARIS can be used as a very efficient detector array for the measurement of gamma-rays. The PARIS detectors can be arranged in several geometries depending on the physics case.
In general, they are arranged into clusters each composed of nine phoswich-crystals or grouped in a wall geometry.
In the recent past, the PARIS array measured in GANIL (Fr), IJCLAB (Fr) and in Krakow at CCB (Pl) and, in 2027, it is going to measure coupled with the AGATA array at LNL (It).
The general performances of these arrays, the PANDORA physics case, the highlight of PARIS and some of the LOI associated with the PARIS in Legnaro campaign will be discussed in the talk.
[1] A. Giaz, et.al., NIM A729(2013)910–921.338 and F. Camera, et.al., EPJ Web of Conferences 66, 11008 (2014).
[2] A.Maj et al., Acta Physica Polonica B 40, 565(2009)
[3] A.Tamii et al. Eur.Phys.J. A (2023)59-208