Heavy gases, iso-octane and C3F8 in charged particle detectors

doi:10.1016/0168-9002(92)90258-6

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Volume 314, Issue 3, 10 May 1992, Pages 620-622

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Abstract

In low-pressure avalanche detectors, iso-octane gives the same performance at 3.0 Torr as isobutane at 5.0 Torr. In low-pressure ion chambers C₃F₈ behaves like CF₄ at more than twice the pressure.

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Cited by (2)

INDRA, a 4π charged product detection array at GANIL
1995, Nuclear Inst. and Methods in Physics Research, A
INDRA, a new and innovative highly segmented detector for light charged particles and fragments is described. It covers geometrically 90% of the 4π solid angle and has very low detection thresholds. The detector, operated under vacuum, is axially symmetric and segmented in 336 independent cells allowing efficient detection of high multiplicity events. Nucleus identification down to very low energy threshold (≈ 1 A MeV) is achieved by using ionization chambers operated with low pressure C₃F₈ gas. Residual energies are measured by a combination of silicon (300 μm thick) and cesium iodide (5 to 14 cm in length) detectors. Very forward angles are covered by fast counting phoswich scintillators (NE102/NE115). Charge resolution up to Z = 50 is achieved on a large energy dynamic range (5000 to 1 for silicon detectors). Isotopic separation is obtained up to Z = 3. The treatment of the signals is performed through specifically designed and highly integrated modules, most of which are in the new VXIbus standard. Full remote control of parameter settings, including visualization of signals, is thus allowed. The detector is continuously monitored with a laser source and electronic pulsers and is found stable over several days. Energy calibration procedures, making use of specific detectors and the ability of the GANIL accelerator to deliver secondary beams, have been developed. First experiments were performed in the spring of 1993.
Performance of gaseous detectors filled with heavy freon C <inf>3</inf>F<inf>8</inf>
2011, Instruments and Experimental Techniques

^☆: This work was partially supported by the Research Corporation and the Fulbright Program.

¹: Permanent address: University of Iowa, Iowa City, IA 52242, USA.

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Letter to the editorHeavy gases, iso-octane and C3F8 in charged particle detectors☆

Abstract

Nucl. Instr. and Meth.

Nucl. Instr. and Meth.

IEEE Trans. Nucl. Instr. Sci. NS-27

Nucl. Instr. and Meth.

Nucl. Instr. and Meth.

Letter to the editor
Heavy gases, iso-octane and C₃F₈ in charged particle detectors☆