Format:
13
ISSN:
0168-9002
Content:
A compact detection system for heavy ions scattered in collisions at the Coulomb barrier is presented. This system, consisting of four identical, low-pressure Parallel Plate Avalanche Counter (PPAC) modules with two sensitive layers each, was built to operate in an ultra-high-vacuum environment inside the EPoS II solenoid spectrometer at GSI Darmstadt. The detector covers polar angles between 20° and 70° with respect to the beam axis, and about 80% of 2π in azimuthal angle. Segmented cathodes and a delay-line read-out allow for a determination of both angles with a precision of δΘ≈0.7° in polar and δΦ≈1.5° in azimuthal angle, respectively. The system has been proven to be capable of handling instantaneous rates of up to 5×105 detected ions per second per module. It neither exhibits the degradation of detection efficiency nor loss in resolution over a 500 h period of a 6 MeV/u238U+181Ta measurement at average luminosities of 8×1027cm−2s−1.
Note:
Gesehen am 30.11.2020
In:
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, Amsterdam : North-Holland Publ. Co., 1984, 432(1999), 2, Seite 379-391, 0168-9002
In:
volume:432
In:
year:1999
In:
number:2
In:
pages:379-391
In:
extent:13
Language:
English
DOI:
10.1016/S0168-9002(99)00520-3
URL:
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