A zero dead-time multi-particle time and position sensitive detector based on correlation between brightness and amplitude

X. Urbain (1) , D. Bech (1) , J.-P. Van Roy (1) , M. Géléoc (2, 3) , Sébastien J. Weber (3, 2) , A. Huetz (4) , Y. J. Picard (4)

1 IMCN - Institut de la matière condensée et des nanosciences / Institute of Condensed Matter and Nanosciences
2 ATTO - Attophysique
3 LIDYL - Laboratoire Interactions, Dynamiques et Lasers (ex SPAM)
4 ISMO - Institut des Sciences Moléculaires d'Orsay

A new multi-particle time and position sensitive detector using only a set of microchannel plates, a waveform digitizer, a phosphor screen, and a CMOS camera is described. The assignment of the timing information, as taken from the microchannel plates by fast digitizing, to the positions, as recorded by the camera, is based on the COrrelation between the BRightness of the phosphor screen spots, defined as their integrated intensity and the Amplitude of the electrical signals (COBRA). Tests performed by observing the dissociation of HeH, the fragmentation of H3 into two or three fragments, and the photo-double-ionization of Xenon atoms are presented, which illustrate the performances of the COBRA detection scheme.

Mots clés: Cameras; Position sensitive detectors; Phosphors; Image sensors; Brightness

Domaines: Physique [physics]

X. Urbain, D. Bech, J.-P. Van Roy, M. Géléoc, Sébastien J. Weber, et al.. A zero dead-time multi-particle time and position sensitive detector based on correlation between brightness and amplitude. Review of Scientific Instruments, 2015, 86, pp.023305. ⟨10.1063/1.4908597⟩. ⟨cea-01244359⟩