A position sensitive time of flight detector for heavy ion ERD
Collection title:
The 22nd International Conference on Ion Beam Analysis (IBA 2015)
Journal:
Nuclear Instruments and Methods in Physics Research Section B
Volume:
371
Conference title:
International Conference on Ion Beam Analysis (22., 2015, Opatija)
Venue:
Opatija, Croatia
Year of conference:
2015
Date of conference beginning:
14.06.2015
Date of conference ending:
19.06.2015
Year:
2016
Pages from - to:
125-131
Language:
Englisch
Keywords:
Elastic recoil detection ; ERDA ; Time of flight detector ; Position sensitive detector ; Electrostatic lens
Abstract:
Abstract A new 2D position sensitive time of flight detector for heavy ion ERD has been developed. The detector features separate time and position measurement in a straight geometry. An electrostatic lens focuses the secondary electrons ejected from a carbon foil onto a channel plate stack maintaining the position information despite the electron momentum distribution. For position readout a 2D Backgammon anode is used. A position resolution of <0.6 mm (FWHM) and a time resolution of 96 ps (FWHM) is demonstrated.