Monitoring extracted beams of the nuclotron accelerator complex for “energy + transmutation” experiments

FLAP Collaboration: Tasks and Perspectives. Study of Fundamentals and New Applications of Controllable Generation of Electromagnetic Radiation by Relativistic Electrons Using Functional Materials

“…Taking into account the capability of variation of the time structure of the electron beam from units of Hz to MHz and a short pulse duration of up to 50 ns, it is proposed to study loading characteristics (recovery time) of detectors based on chevron (dual) assemblies of microchannel plates (MCP). Such detectors have been extensively used at LNP and LHEP JINR for nondestructive monitoring of circulating and extracted accelerated particle beams [17,18]. Such detectors will also be applied at the constructed Booster, Nuclotron, and storage rings of the NICA acceleration complex.…”

Applied research at the LHEP accelerator complex

“…Experimental fission cross sections for heavy elements bombarded by relativistic nuclei are scarce, and theoretical models are often unreliable. This makes the research at the Nuclotron and NICA accelerator complex [12]- [15] topical. The studies with large subcritical assemblies QUINTA and BURAN irradiated by relativistic particles showed that certain tasks, such as measurement of delayed neutron yield and spatial distribution of neutron fields, requires special equipment including MCP-based detectors for circulating beam monitoring inside the Nuclotron ring [8] and the extracted beam diagnostic systems [12] to obtain information on the time structure of the beam.…”

Study of neutron spectra in extended uranium target. New experimental data

“…The total beam intensity was measured with ionization chambers (for deuteron and carbon beams) and by activation of Al foil for the proton beam (reaction 27 Al(p,x) 24 Na). Detailed description of the beam monitoring system can be found in [8]. The values of the integral beam intensity were 2.5 · 10 15 for protons 0.66 GeV,6.2 · 10 12 for deuteron 4 AGeV beam, and 4.8 · 10 10 for carbon 4 AGeV beam, measured with a relative error of 10 %.…”