Speaker
Description
TITLE: The HIE-ISOLDE Superconducting Recoil Separator (HISRS)
I. Martel(1,*), J.L. Aguado(1), M. Assie(2), M.A.M. Al-Aqeel(3,21), R. Berjillos(4), C. Bontoiu(3), M. J. G. Borge(5), L. Bottura(6), W. Catford(7), J. Cederkall(8), T. Davinson(9), G. De Angelis(10), T. Ekelof(11), A.P. Foussat(6), L. Gaffney(3), E. Galanis(12), C. García-Ramos (1), H. Glass(12), K. Johnston(6), T. Junquera(13), O. Kochebina(13), T. Kurtukian-Nieto(14), M. Losasso(6), A. Laird(15), J. L. Muñoz(16), G. Neyens(6), R. D. Page(3), J.A. Rodriguez(6), J. Resta-López(18), K. Riisager(17), V. Rodin (18), A.M. Sánchez-Benítez(1), J. Sánchez-Segovia(1), B. Shepherd(18), E. Siesling(6), N. Singh(19), J. Smallcombe(3), O. Tengblad(5), D. Tommasini(6), J. Uusitalo(20), C. P. Welsch(3).
1. Univ. Huelva, Spain.
2. IPNO, Univ. Paris-Sud, Orsay, France.
3. Univ. Liverpool, United Kingdom.
4. TTI Norte, Santander, Spain.
5. IEM-CSIC, Madrid, Spain.
6. CERN, Geneva, Switzerland.
7. Univ. Surrey, United Kingdom.
8. Univ. Lund, Sweden.
9. Univ. Edinburgh, United Kingdom.
10. LNL-INFN Legnaro, Italy.
11. Univ. Uppsala, Sweden.
12. PARAGRAF, Somersham, United Kingdom.
13. ACS, Orsay, France.
14. CENGB, Gradignan, France.
15. Univ. York, United Kingdom.
16. ESS-BILBAO, Bilbao, Spain.
17. Univ. Aarhus, Denmark.
18. Cockcroft Institute, Daresbury, United Kingdom.
19. Univ. West Scotland, United Kingdom.
20. Univ. Jyvaskyla, Finland.
21. IMIS Univ., Riyadh, Saudi Arabia.
(*) Presenter
Abstract
The HIE-ISOLDE facility at CERN (Geneva, Switzerland) [1] produces a large variety of radioactive beams from 6He to 232Ra at 0.45-10 MeV/u. This energy range is ideal to study nuclear structure, low-energy dynamics and astrophysics by using nucleon transfer, Coulomb excitation and deep inelastic reactions. An important experimental problem is the separation of the primary beam from beam-like reaction fragments produced in heavy ion reactions. To meet the physics program needs, a high-resolution recoil separator based on a compact superconducting mini-ring storage system has been proposed.
A proof-of-concept preliminary design features a Φ= 1.5 m diameter ring built up of multifunction SC magnets of ẟ = 25 cm length (MFSCM) in a Fixed-Field Alternating-Gradient (FFAG) configuration [2]. The MFSCMs should be able to withstand magnetic fields as high as 6 T. The reaction fragments circulate typically for 𝜏 = 10 μs being differentiated by their cyclotron frequency. After extraction the ions are identified and quantified in a focal plane detector by Time-of Flight (ToF) and Digital Pulse Shape Analysis (DPSA) techniques [3].
The White-Book of the HISRS facility addressing the most important physics cases and the technical requirements, is presently in preparation.
[1] Y. Kadi et al., Jour. of Phys: Conf. Ser. 312 (211) 052010.
[2] C. Bontoiu et al., IPAC-2015, doi:10.18429/JACoW-IPAC2015-WEPMN051.
[3] I. Martel et al., “The Isolde Superconducting Recoil Separator (ISRS)”. 84th ISOLDE Collaboration Committee meeting.CERN (Geneva, Switzerland), March 19, 2019. https://indico.cern.ch/event/801266/
