Straw detector
A straw detector is a track detector for fast charged particles in high energy physics . It consists of many (e.g. several thousand) parallel arranged proportional counter tubes with a small diameter (a few millimeters) and a small wall thickness ( straw). The pipe material is produced by winding a strip of foil.
The small wall thickness means that a particle can traverse many pipes with little energy loss. This allows its direction of movement and energy to be determined. The detector can be operated like a drift chamber , so that a high spatial resolution, far finer than the diameter of the tubes, is achieved.
Compared to wire chambers, the straw detector has the following advantages:
- easier manufacture
- Robustness against the breakage of individual anode wires, since the defective wire remains in its tube and only has to be switched off
- each anode wire is shielded in its own tube, mutual interference ("crosstalk") is avoided
literature
- Kai Nünighoff: Development and first tests of a straw detector prototype for the TOF experiment at COZY . Diploma thesis, University of Wuppertal , 1997
swell
- ↑ Glenn f. Knoll: Radiation Detection and Measurement. 4th edition, Wiley 2010, page 165, ISBN 978-0-470-13148-0
- ^ Walter Toki: Review of Straw Chambers . 1990, p. 2 ( PDF [accessed on May 17, 2016]).