Creation of the precision magnetic spectrometer SCAN-3

The new JINR project [1] is aimed at studies of highly excited nuclear matter created in nuclei by a high-energy deuteron beam. The matter is studied through observation of its particular decay products - pairs of energetic particles with a wide opening angle, close to 180°. The new precision hybrid magnetic spectrometer SCAN-3 is to be built for detecting charged (π±, K±, p) and neutral (n) particles produced at the JINR Nuclotron internal target in dA collisions. One of the main and complex tasks is a study of low-energy ηA interaction and a search for η-bound states (η-mesic nuclei). Basic elements of the spectrometer and its characteristics are discussed in the article

Experimental study of the plastic scintillator damage caused by radiation on IREN at JINR.

This paper describes the studies of four types of plastic scintillators SCSN-81, UPS-923A (made by KIPT, Kharkov), BC-408, LHE (made by JINR, Dubna) performed by the CMS JINR group on Intense Resonance Neutron source (IREN) - the JINR neutron source facility. These studies were performed to measure a light yield from samples of different shapes before and after irradiation. The investigation was performed to understand the dependence of light yield on the dose rate

Measuring of induced radioactivity of the HE megatile on IREN at JINR.

Results of measurement of the induced radioactivity caused by neutrons for a segment of a multi sectional scintillation detector (megatile) are presented. Two endcap sampling calorimeters (HE) are parts of the hadron calorimeter (HCAL) of experimental setup CMS. Each HE consists of 648 megatiles. Irradiation of a section of the megatile by neutrons has been performed as neutron activation is the main source of induced radioactivity. Irradiation of a segment of the megatile was carried out on IREN - the JINR neutron source facility. The HE will be accessible to humans after a suitable period of cool down

Creation of the precision magnetic spectrometer SCAN-3

The new JINR project [1] is aimed at studies of highly excited nuclear matter created in nuclei by a high-energy deuteron beam. The matter is studied through observation of its particular decay products - pairs of energetic particles with a wide opening angle, close to 180°. The new precision hybrid magnetic spectrometer SCAN-3 is to be built for detecting charged (π±, K±, p) and neutral (n) particles produced at the JINR Nuclotron internal target in dA collisions. One of the main and complex tasks is a study of low-energy ηA interaction and a search for η-bound states (η-mesic nuclei). Basic elements of the spectrometer and its characteristics are discussed in the article