The "charge state breeder" BRIC (BReeding Ion Charge) is in construction at the INFN section of Bari (Italy). It is based on EBIS scheme and it is designed to accept Radioactive Ion Beam (RIB) with charge state +1 in a slow injection mode. It will be tested at ISOL/TS facility of LNL (Italy). Furthermore, it could be considered also as a technical solution of the charge breeder of the SPES project under study also at the LNL. The new feature of BRIC, with respect to the classical EBIS, is given by the insertion, in the ion drift chamber, of a RF - Quadrupole aiming to filtering the unwanted masses and then making a more efficient containment of the wanted ions. In this paper, the charge breeder BRIC status and the related construction problems with the first test results will be reported.

https://epaper.kek.jp/l02/papers/mo449.pdf

The charge state breeder bric: status report

The production of radioactive ion beam (RIB) with the ISOL technique could require a charge breeder device to increase the ion acceleration efficiency and reduce greatly the production cost. The “charge breeder” is a device designed to accept radioactive 1+ ions in order to increase their charge state up to n+. In the framework of the SPES project, proposed at the INFN-LNL (Padua) for RIB production, an R&D experiment of a charge breeder device, BRIC, has been carried out at LNL. BRIC is an EBIS-type ion charge state breeder in which a radio frequency (RF) quadrupolar field has been superimposed in the trapped ion region to introduce a selective containment with the aim of increasing the ion trapping efficiency. In this paper, the device and the test measurements that demonstrate the selective containment effect due to the RF quadrupolar field are presented. Furthermore, some comments on the possibility of using that device as charge state breeder for RIB production has been also discussed in the conclusions. This experiment has been also considered as R&D program of the RIB European project EURISOL_DS.

Selective containment in EBIS for charge breeding applications

Measurements of ion selective containment on the RF charge breeder device BRIC

The `charge state breeder' BRIC (BReeding Ion Charge) is based on an EBIS source and it is designed to accept Radioactive Ion Beam (RIB) with charge state +1, in a slow injection mode, to increase their charge state up to +n. BRIC has been developed at the INFN section of Bari (Italy) during these last 3 years with very limited funds. Now, it has been assembled at the LNL (Italy) where are in progress the first tests as stand alone source and where, in the future, with some implementation, it will be tested as charge breeder at ISOL/TS facility of that laboratory. BRIC could be considered as a solution for the charge state breeder of the SPES project under study also at the LNL. The new feature of BRIC, with respect to the classical EBIS, is given by the insertion, in the ion drift chamber, of a radio frequency (RF) - quadrupole aiming to filter the unwanted masses and then making a more efficient containment of the wanted ions. In this paper, the first ion charge state measurements and analysis and the effect of the RF field applied on the ion chamber will be reported and discussed. The first RF test measurements seem confirm, as foreseen by simulation results carried out previously, that a selective containment can be obtained. However, most accurate measurements needed to study with more details the effect. For this reason, few implementations of the system are in order to improve the accuracy of the measurements. The proposed modifications of the BRIC device, then, will be also presented and shortly discussed.

Test measurements on the RF charge breeder device BRIC

The "charge state breeder" BRIC (BReeding Ion Charge) is based on an EBIS source and it is designed to accept Radioactive Ion Beam (RIB) with charge +1, in a slow injection mode, to increase their charge state up to +n. BRIC has been developed at the INFN section of Bari (Italy) during these last 3 years with very limited funds. Now, it has been assembled at the LNL (Italy) where are in progress the first tests as stand alone source. The new feature of BRIC, with respect to the classical EBIS, is given by the insertion, in the ion drift chamber, of a Radio Frequency (RF) Quadrupole aiming to filtering the unwanted elements and then making a more efficient containment of the wanted ions. In this contribution, the measurements of the selective effect on the ion charge state containement of the RF quadrupole field, applied on the ion chamber, will be reported and discussed. The ion charge state analisys of the ions trapped in BRIC seem confirm, as foreseen by simulation results carried out previously, that the selective containment can be obtained. A modification of the collector part to improve the ion extraction of BRIC will be also presented and shortly discussed.

/pdf/measurements-of-ion-selective-containement-on-the-rf-charge-klkpe36lzt.pdf

Measurements of Ion Selective Containement on the RF Charge Breeder Device Bric

In the framework of the SPES project, funded by INFN at the LNL (Padua), for Radioactive Ion Beam (RIB) production, an R&D experiment of a charge breeder device, BRIC, is in progress at Bari INFN section. BRIC is an EBIS type ion charge state breeder in which a radio frequency (rf) quadrupolar field has been superimposed in the trapped ion region to introduce a selective containment with the aim to increase the wanted ion trapping efficiency. A code that studies the motion and the ion charge state evolution in the trap region of the BRIC device has been, recently, developed in Bari. That code should allow of choosing the rf quadrupole parameters to optimise the ion charge breeding efficiency. In this paper the main feature of the code, named BRICTEST, and the simulation test will be presented and shortly discussed.

Brictest: a code for charge breeding simulations

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Brictest: a code for charge breeding simulations