Status and perspectives of the cyclotron JULIC as COSY injector

• Autorzy: Bräutigam W. , Brings R. , Gebel R. , Jungwirth H. , Maier R. , de Villiers G.
• Konferencja: Proceedings of the XXXIII European Cyclotron Progress Meeting, 17-21 September 2002, Warszawa-Kraków, Poland
• Języki publikacji: EN

Abstrakty

EN

Since January 1996, the cyclotron JULIC operates more than 7500 hours per year as injector of H- or D- beams for the cooler synchrotron COSY at the IKP of the Forschungszentrum Jülich. Usually about 8 žA of unpolarized or 1 žA of polarized H- ions are delivered at 45 MeV for charge-exchange injection into COSY; higher beam intensities would be required especially for polarized beams to fill COSY to its space-charge limit. Also unpolarized D- ions at 75 MeV were delivered with good results, although the septum-deflector insulators give problems at higher voltage. The demand for deuterons at COSY is growing, however, and the first polarized D- beam is already scheduled for tests. This report sums up the characteristics of the cyclotron in its present mode of operation and describes the quest for higher beam intensities as well as for providing D- beams reliably. The results are presented and discussed in terms of JULIC’s future suitability as COSY injector.

Słowa kluczowe

EN

cyclotron JULIC; H-/D- operation; injector for the cooler synchrotron COSY; limitation of beam intensity; polarized beams; unpolarized beams

• Wydawca: Institute of Nuclear Chemistry and Technology
• Czasopismo: Nukleonika
• Rocznik: 2003
• Tom: Vol. 48,suppl.2
• Strony: 123--126
• Opis fizyczny: Bibliogr. 3 poz., rys.

Twórcy

autor

Bräutigam W.

• Institut für Kernphysik (IKP), Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany

autor

Brings R.

• Institut für Kernphysik (IKP), Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany

autor

Gebel R.

• Institut für Kernphysik (IKP), Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany

autor

Jungwirth H.

• Institut für Kernphysik (IKP), Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany
• ACCEL Instruments GmbH, D-51429 Bergisch Gladbach, Germany, Tel.: [phone], Fax: [phone]

autor

Maier R.

• Institut für Kernphysik (IKP), Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany

autor

de Villiers G.

• Accelerator Group, iThemba LABS, P.O. Box 722, Somerset-West 7129, South Africa

Bibliografia

• 1. Bräutigam W, Brings R, Gad N, Gebel R, Jungwirth H, Maier R, Rindfleisch U (2001) Extraction of D− beams from the cyclotron JULIC for injection into the cooler synchrotron COSY. In: Proc of the 16th Int Conf on Cyclotrons and their Applications held at NSCL/MSU, 13−17 May 2001, East Lansing, USA. AIP 600:123−125
• 2. Bräutigam W, Brings R, Gebel R, Maier R, Schnase A, Jungwirth H (1999) H− operation of the cyclotron JULIC as injector for the cooler synchrotron COSY-Jülich. In: Baron E, Lieuvin M (eds) Proc of the 15th Int Conf on Cyclotrons and their Applications, Caen, France, 14−19 June 1998. IOP, Bristol, pp 654−657
• 3. Maier R (1997) Cooler synchrotron COSY – performance and perspectives. Nucl Instrum Meth Phys Res A 390:1−8