Technical problems involved in H$sub 2$ streamer chambers

Conference · Sat Jan 01 04:00:00 EST 1972

OSTI ID:4359884

Rohrbach, F; Bonnet, J J; Cathenoz, M; Watson, J M ^[1]

---

1. ed.

In streamer chamber technology. Technical difficulties which must be resolved In order to develop a working H/sub 2/ streamer chamber for elementary particle research are discussed. It was found that the minimum requirements for the high voltage pulse are: amplitude 70 to 80 kV/cm for pure hydrogen ( approximates 80 kV/cm with SF/sub 6/ or CH/sub 4/ impurities) at atmospheric pressure, duration lower or equal to 6 ns at the base of the pulse and reproducibility better than 2%. A very fast pulse with rise time less than 2 ns and less than l% jitter has been obtained by using an electrostatic high voltage generator (up to 600 kV) feeding a conical Blumlein line switched at the tip of the cone by a high pressure triggered radial spark gap. With this equipment good pictures of tracks in hydrogen were obtained in a 9 cm gap chamber nt various H/ sub 2/ pressures up to 0.4 atmosphere. The effect of impurities and mixtures on track quality in H/sub 2/ have been studied. Comparison with He and He-- Ne (75%) gas are given. (auth)

• Research Organization: Univ. of Washington, Seattle; Argonne National Lab., Ill. (USA)
• NSA Number: NSA-29-015753
• OSTI ID: 4359884
• Report Number(s): ANL--8055
• Country of Publication: United States
• Language: English

Related Subjects

*STREAMER SPARK CHAMBERS-- OPERATION
HIGH-VOLTAGE PULSE GENERATORS
HYDROGEN
IMPURITIES
N46140* --Instrumentation--Radiation Detection Instruments-- High Energy Physics Instrumentation