Details

Autor(en) / Beteiligte

• Giovinazzo, J.
• Pibernat, J.
• Goigoux, T.
• de Oliveira, R.
• Grinyer, G.F.
• Huss, C.
• Mauss, B.
• Pancin, J.
• Pedroza, J.L.
• Rebii, A.
• Roger, T.
• Rosier, P.
• Saillant, F.
• Wittwer, G.

Titel

Metal-core pad-plane development for ACTAR TPC

Ist Teil von

• Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 2018-06, Vol.892, p.114-121

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2018

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• With the recent development of active targets and time projection chambers (ACTAR TPC) as detectors for fundamental nuclear physics experiments, the need arose for charge collection planes with a high density of readout channels. In order to fulfill the mechanical constraints for the ACTAR TPC device, we designed a pad-plane based on a metal-core circuit with an conceptually simple design and routing for signal readout, named FAKIR (in reference to a fakir bed of nails). A test circuit has been equipped with a micro mesh gaseous structure (micromegas) for signal amplification and a dedicated readout electronics. Test measurements have been performed with an 55Fe X-ray source giving an intrinsic energy resolution (FWHM) of 22±1% at 5.9keV, and with a 3-alpha source for which a resolution of about 130±20keV at 4.8MeV has been estimated. The pad-plane has been mounted into a reduced size demonstrator version of the ACTAR TPC detector, in order to illustrate charged particle track reconstruction. The tests preformed with the X-ray and the 3-alpha sources shows that results obtained from pads signals are comparable to the intrinsic result from the micro-mesh signal. In addition, a simple alpha particle tracks analysis is performed to demonstrate that the pad plane allows a precise reconstruction of the direction and length of the trajectories.