The new IFJ PAN monography, “PARIS White Book”, edited by Franco Camera (Milano University) and Adam Maj (IFJ PAN) is available in the IFJ PAN repository - https://rifj.ifj.edu.pl/handle/item/333.
PARIS is a collaborative international project (http://paris.ifj.edu.pl) to construct and operate a novel gamma-ray calorimeter. The PARIS White Book is intended to provide a general description of the performances of the PARIS array, of the different laboratories which could, in the next years, host it and of the physics cases that can be addressed by the PARIS array. It is the intention of this White Book to support the collaboration and help to decide on the future PARIS campaigns, as well as on its promising enhancement PARIS to 4π.