Gas Target

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Revision history
Version Author Description Date
1.0 D. Hutcheon Initial Document 27 September 2002
1.1 D. Hutcheon Hidden valves,shack 4 April 2007
1.2 D. Hutcheon Leak checking 27 April 2007
1.3 D. Hutcheon Decadal update 22 January 2019
1.4 A. Lennarz Transferred to wiki June 25th, 2025

Safety with hydrogen as the target gas

Normal operation

Unattended gas target, trap containing absorbed hydrogen

Protection of equipment

General description of the gas target system

Gas supply shack

Windowless gas target

Operating the target

Pre-run checks

Pumping out the target

Filling the cleaning trap with hydrogen

Filling the cleaning trap with helium

Circulating gas through the target, trap in use

Circulating gas through the target, trap not in use

Checks of an operating target

Temporary pump-out of the target, trap in use

Emptying target and trap at end of running

Venting the target to 1 atmosphere

Hidden valves

Leak checking

Emergency procedures, response to pump trips

Power outage

Loss of compressed air to valves

Pump trips