COSMIC RAY DETECTOR

Developed by University of Chicago

Balloon launched on 9/6/1950, from Stagg Field, University of Chicago, Illinois, US

Purpose of the flight and payload description

The experiment has been performed in order to study the production of mesons in the interactions of cosmic-ray particles with hydrogen nuclei. The proton target consisted of a spherical metal Dewar, 30 cm in diameter, filled with hydrogen. Four crossed counter trays determined the direction of the incoming particle while two other counter trays detected multiple events. A master pulse was triggered by the coincidence. The pulses from each counter were in coincidence with the master pulse and were registered individually on a moving photographic film (hodoscope). Towards the middle of the flight the hydrogen was ejected from the Dewar. The remaining time at altitude was used as a control experiment without hydrogen.

Details of the balloon flight

Balloon launched on: 9/6/1950
Launch site: Stagg Field, University of Chicago, Illinois, US  
Balloon launched by: Chicago University Group
Balloon manufacturer/size/composition: Zero Pressure Balloon  
End of flight (L for landing time, W for last contact, otherwise termination time): 9/6/1950
Balloon flight duration (F: time at float only, otherwise total flight time in d:days / h:hours or m:minutes - ): F 4 h 30 m

External references

Images of the mission

         

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