The basic ion-optical characteristics of the COMBAS fragment separator are analyzed. The momentum distributions of radioactive 6He, 8He, and 9Li nuclei obtained in the reaction 11B (33 A MeV, where A is the mass number of a particle) + 9Be (332.6 mg/cm2) have been investigated in forward-angle measurements on the COMBAS fragment separator. The momentum and angular (horizontal) acceptances of the COMBAS separator have been measured using the 6He, 8He, and 9Li beams. It has been ascertained that the images of the 6He, 8He, and 9Li nuclear beams in final achromatic focus of the separator F a approximately twofold exceed the size of the beam on a producing target (input focus F 0), at which the primary beam has a diameter of 6 mm. The intensities of 6He, 8He, and 9Li beams obtained at a 5-μA intensity of the primary 11B beam are 6.9 × 105, 2 × 104, and 4.7 × 105 particles/s, respectively. These values are sufficient for use in spectroscopic measurements. It is proposed that time-of-flight analysis of nuclear reaction products at the exit from the COMBAS separator will be used not only to measure the energy of transported particles over the whole operating range of the momentum acceptance, but also to identify them by mass A and charge Z without loss of these particles. The problem of reducing the count rates of detectors and further improvement of their energy resolution for detected particles can be solved by placing a high-resolution magnetic spectrometer past the second target accepting the secondary radioactive nuclear beams.

Using fragment-separator COMBAS [1] in forward-angle measurements the velocity, isotopic and element distributions of products with Z<7 in B-11 (33AMeV) + Be-9 reaction have been studied. The yields of He-6,He-8 and Li-9 isotopes on the Be-9 thick target (332.6 mg/cm(2)) as a function of momentum acceptance of fragment -separator COMBAS have been measured. The production rates per 1p mu A of the primary beam of exotic nuclei of He-6 (6.9.10(5) pps), He-8 (2.10(4) pps) and Li-9 (4.3.10(5) pps) which can be used as secondary radioactive beams of halo -like nuclei have been determined. The two-neutron halo nuclei He-6,He-8 and Li-9 are of great current interest both as very neutron-rich nuclei with a significant neutron skin and in understanding the interactions of very neutron-rich nuclei. The Li-9 beam may be helpful in understanding of sub barrier fusion enhancement independent of the presence of the halo nucleons in used neutron - rich projectiles.

In present work it is proposed to implement the data acquisition system (DAQ COMBAS) for the fragment separator COMBAS(1) under freely distributed UNIX like operating system (OS) FreeBSD on base of the ngdp framework(2,3), which allows to build modular distributed DAQ. As a CAMAC subsystem the camac package(4) (DLNP JINR) is used, which encapsulates code deals with each supported crate controller into corresponding driver. Authors create the driver kh(4) for the PCl adapter of the CC02 controller(5) (Karazin Kharkov National University). The runtime configurable r2h(1) histogram server module is supposed. The histGUI(1) client module is intended for histograms viewing as well as for r2h(1) runtime control and configurating. The histGUI(1) client will not depend on DAQ and ngdp system libraries, so can be compiled under any OS equipped by the ROOT package(6).

Using fragment‐separator COMBAS [1] in forward‐angle measurements the velocity, isotopic and element distributions of products with Z<7 in 11B(33 AMeV)+9Be reaction have been studied. The yields of 6,8He and 9Li isotopes on the 9Be thick target (332.6 mg/cm2) as a function of momentum acceptance of fragment ‐separator COMBAS have been measured. The production rates per 1pμA of the primary beam of exotic nuclei of 6He(6.9⋅105 pps), 8He(2⋅104 pps) and 9Li(4.3⋅10 5pps) which can be used as secondary radioactive beams of halo ‐like nuclei have been determined. The two‐neutron halo nuclei 6,8He and 9Li are of great current interest both as very neutron‐rich nuclei with a significant neutron skin and in understanding the interactions of very neutron‐rich nuclei. The 9Li beam may be helpful in understanding of sub barrier fusion enhancement independent of the presence of the halo nucleons in used neutron—rich projectiles.

The data acquisition, transportation and processing (DAQ) systems for INR NASU and COMBAS setup (JINR, FLNR) are proposed on base of ngdp framework and camac package (JINR, DLNP). ROOT dedicated class representing events online allows to implement the runtime configurable histogram server. Ones clients with graphic interface are independent on another DAQ so suitable for any operating system supporting ROOT.

Using fragment‐separator COMBAS [1] in forward‐angle measurements the velocity, isotopic and element distributions of products with Z<7 in 11B(33 AMeV)+9Be reaction have been studied. The yields of 6,8He and 9Li isotopes on the 9Be thick target (332.6 mg/cm2) as a function of momentum acceptance of fragment ‐separator COMBAS have been measured. The production rates per 1pμA of the primary beam of exotic nuclei of 6He(6.9⋅105 pps), 8He(2⋅104 pps) and 9Li(4.3⋅10 5pps) which can be used as secondary radioactive beams of halo ‐like nuclei have been determined. The two‐neutron halo nuclei 6,8He and 9Li are of great current interest both as very neutron‐rich nuclei with a significant neutron skin and in understanding the interactions of very neutron‐rich nuclei. The 9Li beam may be helpful in understanding of sub barrier fusion enhancement independent of the presence of the halo nucleons in used neutron—rich projectiles.