Dual Position Sensitive MWPC for tracking reaction products at VAMOS plus

作者：Vandebrouck M; Lemasson A^*; Rejmund M; Fremont G; Pancin J; Navin A; Michelagnoli C; Goupil J; Spitaels C; Jacquot B

来源：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment , 2016, 812: 112-117.

DOI：10.1016/j.nima.2015.12.040

• Low pressure Multi-Wire Proportional
• Counter (MWPC)
• VAMOS plus
• Tracking of heavy reaction products
• Doppler correction
• Energies around the Coulomb barrier

The characteristics and performance of a Dual Position Sensitive Multi-Wire Proportional Counter (DPS-MWPC) used to measure the scattering angle, the interaction position on the target and the velocity of reaction products detected in the VAMOS+ + magnetic spectrometer, are reported. The detector consists of a pair of position sensitive low pressure MWPCs and provides both fast timing signals, along with the two-dimensional position coordinates required to define the trajectory of the reaction products. A time of-flight resolution of 305(11) ps (FVVHM) was measured. The measured resolutions (FVVHM) were 2.5(3) mrad and 560(70) mu m for the scattering angle and the interaction point at the target respectively. The subsequent improvement of the Doppler correction of the energy of the gamma-rays, detected in the gamma-ray tracking array AGATA in coincidence with isotopically identified ions in VAMOS+ +, is also discussed.

• 出版日期2016-3
• 单位中国地震局