The experimental facilities at ISAC
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The experimental facilities at ISAC J. Dilling · R. Krücken
© Springer Science+Business Media Dordrecht 2013
Abstract The ISAC accelerator facility provides rare isotope beams in three different areas at low (20–60 keV), medium-high (up to 1.8 AMeV) or higher energies (up to 16 AMeV, depending on the mass-to-charge ratio of the isotopes). There is a corresponding suite of experimental installations on the floor, most of them permanently, which are uniquely matched to the requirements of the scientific goals as well as to the conditions as the arise at rare-beam facilities, like ISAC. An introduction to the three distinct experimental areas, given by the available energy of beams, is given. Keywords ISAC radioactive beams · Post-acceleration · Instrumentation
1 Introduction The rare-isotope beam program at TRIUMF started out in 1987 with an ISOL (Isotope Separator on-line) test facility, called TISOL (Triumf’s Isotope Separator On-line), which paved the way to first experimental studies. Those studies included target and ion-source developments as well as experimental programs in nuclear astrophysics [1] and fundamental symmetries via beta-decay correlation studies [2, 3]. In the late 1990 the ISAC (Isotope Separator and Accelerator) facility was started and initially beams at low energy [4] and soon thereafter at medium-high energies [5] were being delivered. The post-accelerated beams were mostly used for nuclear astrophysics applications. In 2007 the ISAC II complex with further post-acceleration capacities was added [6], which provides now beam energies up to 16 AMeV using superconducting RF technology.
ISAC and ARIEL: The TRIUMF Radioactive Beam Facilities and the Scientific Program. J. Dilling (B) · R. Krücken TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T2A3, Canada e-mail: [email protected]
J. Dilling, R. Krücken
Fig. 1 The ISAC I and ISAC II experimental complex. ISAC I provides beam to experiments at low and medium-high energies. ISAC II delivers post-accelerated beam up to 6 AMeV or 16 AMeV, depending on the mass-to-charge ratio
The ISAC I and II experimental areas are shown in Fig. 1. The ISAC I area provides radioactive ion beams to two separate experimental areas, the low energy area with beams at 20–60 keV, and the post-accelerated area with beam of up to energies of 1.8 AMeV. The ISAC II facility can provide ion beams with further post-acceleration of energies up to either 6 AMeV (for isotopes with mass A up to 150 amu) or 16 AMeV (for lighter isotopes up to mass 30 amu). The experiemental program covered in both areas can be divided into the following categories: • • • •
solid state interface studies and new material with βNMR and βNQR. nuclear astrophysics physics beyond the Standard Model and fundamental symmetries fundamental nuclear physics and structure studies
2 Experimental facilities in ISAC I The experimental fcilities in ISAC I are organised into the low energy area, and the post-accelerated area. The low energy facilities (20–60 keV) follow these science goals and motivations: m
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