Rare Ion Beam Facility at Kolkata – Present State of Development * (original) (raw)

Post-Accelerator LINAC Development for the RIB Facility Project at VECC, Kolkata

2008

An ISOL (Isotope Separator On Line) type of RIB (Rare Ion Beam) facility is being developed at our centre. The post-acceleration scheme will consist of a Radio Frequency Quadrupole (RFQ) followed by a few IH LINAC cavities further augumentation of energy using SC QWRs will be taken up at a later stage. The first two IH cavities have been designed for 37.6 MHz frequency like the preceding RFQ to keep the RF defocusing smaller. Explosively bonded copper on steel has been used for the fabrication of the IH cavities and the inner components have been from of ETP grade (UNS C11000) copper. Also, we have adopted an octagonal cross-section for the cavity structure to avoid fabrication complicacies. The first and second cavity have inside lengths of 0.62 and 0.97 m respectively and the inside separation between two opposite sides of the octagon is 1.72 m. Thermal analysis of the cavities has been carried out and cooling configurations have been optimized accordingly to control the temperatu...

Towards the Development of Rare Isotope Beam Facility at VECC Kolkata

2008

An ISOL type Rare Isotope Beam (RIB) Facility is being developed at VECC, Kolkata around the existing K=130 room temperature cyclotron. In the first stage, the beam energy will be about 400 keV/u using an RFQ posaccelerator and three modules of IH-linacs. Subsequently the energy will be boosted to about 1.3 MeV/u. A separate LEBT line for material science experiments is planned. Some of the systems have already been installed and made operational. The LEBT line has been tested and stable ion beams accelerated to 29 keV/u with high efficiency in a 1.7 m RFQ. A 3.4 m RFQ and the first IH Linac tank are under installation in the post-acceleration beam line. In this contribution an overview of the present status of the facility will be presented.

SC Cyclotron and RIB Facilities in Kolkata

Proceedings of the 2005 Particle Accelerator Conference, 2005

Two advanced accelerator facilities are under construction at this centre, essentially, for basic nuclear physics experiments. Construction of the K bend =520 superconducting cyclotron for accelerating heavy ion beams is nearing completion. The main magnet was recently enrgized in the cyclotron vault. The excitation current is gradually being raised to reach the design value. Most of the major components/systems are being fabricated at various locations. We plan to start assembly of the cyclotron in the last quarter of 2005. Experimental facilities are also under design and construction by the user groups. The Radioactive Ion Beam (RIB) facility will use the existing K=130 room temperature cyclotron as the primary beam source and will be housed in a large experimental area. The major components of this facility consist of a target system, on-line ECRIS "charge breeder", a low beta RFQ and an IH linac. Several components of this complex facility have been developed or fabricated. The developemnt work on the others is going on. The design energy at the end of three linac tanks is about 400 keV/nucleon, to be achieved around the end of 2006.

Review of radioactive ion beam facilities and research opportunities

1994

This report presents a comparison of the radioactive ion beam production methods and their specifications. An overview of existing or funded facilities is given with some prospects for the future. Radioactive ion beams arise a great enthousiasm among the scientific community since they allow to achieve experiments previously considered impossible in nuclear physics and in other fields of physics. Few typical physic cases will illustrate challenges and perspectives. "'It is my view the continued development and application of secondary ion beam techniques could bring the most exciting results in laboratory nuclear astrophysics in the next decade".

Upgrade of the facility EXOTIC for the in-flight production of light Radioactive Ion Beams

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2013

The facility EXOTIC for the in-flight production of light weakly-bound Radioactive Ion Beams (RIBs) has been operating at INFN-LNL since 2004. RIBs are produced via two-body reactions induced by high intensity heavy-ion beams impinging on light gas targets and selected by means of a 30°-dipole bending magnet and a 1-m long Wien filter. The facility has been recently upgraded (i) by developing a cryogenic gas target, (ii) by replacing the power supplies of the middle lenses of the two quadrupole triplets, (iii) by installing two y-steerers and (iv) by placing two Parallel Plate Avalanche Counters upstream the secondary target to provide an event-by-event reconstruction of the position hit on the target. So far, RIBs of 7 Be, 8 B and 17 F in the energy range 3-5 MeV/u have been produced with intensities about 3 Â 10 5 , 1.6 Â 10 3 and 10 5 pps, respectively. Possible light RIBs (up to Z = 10) deliverable by the facility EXOTIC are also reviewed.

Facilities and methods for radioactive ion beam production

Physica Scripta, 2013

Radioactive Ion Beam facilities are transforming nuclear science by making beams of exotic nuclei with various properties available for experiments. New infrastructures and development of existing installations enlarges the scientific scope continuously. An overview of the main production, separation and beam handling methods with focus on recent developments is done, as well as a survey of existing and forthcoming facilities world-wide.

Status of the Reaccelerator Facility R Ε a for Rare Isotopes Beam Research *

2012

The Facility for Rare Isotope Beams (FRIB) at Michigan State University (MSU) is currently in the preliminary design phase. FRIB consists of a heavy ion driver LINAC, followed by a fragmentation target station, a fragment separator, a fast beam experimental area, a gas stopping area, a stopped beam experimental area and a ReAccelerator facility (RεA). In its final configuration, RεA will provide heavy ion beams from 0.3 MeV/u to 12 MeV/u for heaviest ions and up to 20 MeV/u for light ions. While FRIB plans to start conventional construction in 2012, the first stage of RεA is already under commissioning and will be connected to the Coupled Cyclotron Facility at MSU end of 2012. The front end of the accelerator consists of a gas stopper, an Electron Beam Ion Trap (EBIT) charge state booster, a room temperature RFQ, followed by a short SRF LINAC, which contains seven β=0.041, eight β=0.085 QWR cavities, and eight 9T focusing solenoids. RεA serves as prototyping test bed for the FRIB cr...

Progress towards the facility for rare isotope beams

The Facility for Rare Isotope Beams (FRIB) is based on a continuous-wave superconducting heavy ion linac to accelerate all the stable isotopes to above 200 MeV/u with a beam power of up to 400 kW. At an average beam power approximately two-to-three orders-of-magnitude higher than those of operating heavy-ion facilities, FRIB stands at the power frontier of the accelerator family-the first time for heavy-ion accelerators. To realize this innovative performance, superconducting RF cavities are used starting at the very low energy of 500 keV/u, and beams with multiple charge states are accelerated simultaneously. Many technological challenges specific for this linac have been tackled by the FRIB team and collaborators. Furthermore, the distinct differences from the other types of linacs at the power front must be clearly understood to make the FRIB successful. This report summarizes the technical progress made in the past years to meet these challenges.

Project of an advanced ISOL facility for exotic beams at LNL

Nuclear Physics A, 2002

In the framework of the European program to define a second generation Radioactive Ion Beam facility, LNL are proposing the construction in the next five-seven years of a specialized national facility for RIB originated by fission fragments produced by secondary neutrons. It consists on a two-accelerator ISOL-type facility to provide intense neutron-rich radioactive ion beams of highest quality, in the range of masses between 80 and 160. The conceptual design is based on a high intensity 50 MeV (100 kW) proton linac as driver and on the availability of the heavy-ion accelerator ALPI as post accelerator. The estimated neutron yield is 2 x 10 14 n/s at 0 0 , high enough to satisfy the demand for an advanced RIB facility. An intense R\&D program on different items is actually in progress in collaboration with other Laboratories and University groups and is moving in a European context.