1. 7/17/02Reyco Henning -- TRD Box S Component Testing 1 TRD Box S Solenoid Valve Testing AMS TRD Meeting, CERN, July 2002 U. Becker, G. Carosi, R. Henning, M. Sekora, R. Xia.

2. 7/17/02Reyco Henning -- TRD Box S Component Testing 2 MV100 Acceptance Testing 9 MV100’s used in Box S and 4 in Box C. Each MV100 Undergoes Tests in the Sequence: 1.Electrical Characteristics (coil resistance, inductance). 2.Leak Tightness at 50 o C and 0 o C with 3000psi pressure. 3.Endurance in Magnetic Field at Room Temperature (500 cycles with 1500 psi pressure and 5 cycles with 3000psi pressure in 600G field at two different orientations) 4.Repeat Tests 1 and 2. Test 2 is now done in a 600G Field and at 2 orientations

3. 7/17/02Reyco Henning -- TRD Box S Component Testing 3 Magnetic Test Setup

4. 7/17/02Reyco Henning -- TRD Box S Component Testing 4 Sample Test Form:

5. 7/17/02Reyco Henning -- TRD Box S Component Testing 5 MV100 Acceptance Testing Status 25 out of 27 Completely Tested (94% of all tests done). 7 had leaks through valve seat at 0 o C. 1 had leak through valve seat at room temp. 1 leaked to outside at all temperatures. Recommend  T > 0 o C At all Times. Electrical Characteristics + Endurance OK.

6. 7/17/02Reyco Henning -- TRD Box S Component Testing 6 Future Test on MV100 Subset These Tests are NOT for Flight Units. Long Term Endurance (>20 000 cycles in Magnet) at High and Low T. Understand Effect of Temperature on Leak Rate across Valve Seat. Effects of Temperature Extremes on Valve (ie. Heat and Cool to Failure).

7. 7/17/02Reyco Henning -- TRD Box S Component Testing 7 Marotta MV197 Solenoid Valves Hermitically Sealed Rated to 6000psi. 4 Used to Connect to Pressure Vessels In Hand End of July Will Undergo Similar Tests.