SPEG: An energy loss spectrometer for GANIL

L. Bianchi (1) , B. Fernandez (1) , J. Gastebois (1) , A. Gillibert (1) , W. Mittig (2) , J. Barrette

1 DPHN - Département de Physique Nucléaire (ex SPhN)
2 GANIL - Grand Accélérateur National d'Ions Lourds

Since July 1985, an energy loss spectrometer (SPEG) is under operation at the National Heavy Ion Laboratory (GANIL), at Caen (France). It has been designed to allow the study of quantum states populated in reactions induced by nuclei accelerated at energies up to 100A MeV. The spectrometer has been designed by P. Birien. The optical properties and the main magnetic features have been calculated by Birien and Valero. A detailed reported of their study is given in ref. [1]. In the first part of the present paper, after recalling the specifications of the spectrometer, we shall give an overall description of the main characteristics, together with indications about the various shimming procedures which have been used to achieve the desired resolution (sections 1–4). In the second part, we shall describe various accessories and the different kinds of detectors which are used during experiments, with several illustrations of experimental results (sections 5 and 6).

Domaines: Physique Nucléaire Expérimentale [nucl-ex]; Instrumentations et Détecteurs [physics.ins-det]

L. Bianchi, B. Fernandez, J. Gastebois, A. Gillibert, W. Mittig, et al.. SPEG: An energy loss spectrometer for GANIL. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1989, 276, pp.509-520. ⟨10.1016/0168-9002(89)90577-9⟩. ⟨in2p3-00408215⟩