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Description
The GALS set-up [1] uses a high-pressure gas cell for stopping heavy ion reaction products. In the dense ionized medium initially high-charged reaction products thermalize and neutralize. By the gas flow they move to the electrically isolated ion-free region, where part of them selec-tively reionize using three step laser resonant ionization process.
To perform an effective mass separation of the reionized ions, one need to separate them from buffer gas and to produce a well formed ion beam with low energy spread. We use the radiof-requency quadrupole (RFQ) ion-guide system for transport the nuclear reaction products from the high-pressure gas cell throw the differential pumping chambers into the high-vacuum region and to form low-energy radioactive ion beam.
Ion-guide system consist of three different part: S-shaped RFQ, located into the first differ-ential pumping chamber; wedged-type microRFQ, passed through the wall between the first and second chambers; and linear RFQ, passed through the wall between the second and third chambers.
The design and construction of all parts of the ion-guide system are discussed.
- GALS - setup for production and study of multinucleon transfer reaction products: present status. S.Zemlyanoy, V.Zagrebaev, E.Kozulin et al. 2016 J. Phys.: Conf. Series 724 012057
