7/17/02 Reyco Henning -- TRD Box S Component Testing

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TRD Box S Solenoid Valve Testing

AMS TRD Meeting, CERN, July 2002U. Becker, G. Carosi,

R. Henning, M. Sekora, R. Xia.

7/17/02 Reyco Henning -- TRD Box S Component Testing

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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 50oC and 0oC 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

7/17/02 Reyco Henning -- TRD Box S Component Testing

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Magnetic Test Setup

7/17/02 Reyco Henning -- TRD Box S Component Testing

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MASSACHUSETTS INSTITUTE OF TECHNOLOGY

LABORATORY FOR NUCLEAR SCIENCE CAMBRIDGE, MA 02139, USA

Acceptance Test Results for the Marotta MV100

8: Post-Endurance Test Visual and Electrical Inspection

Name: Part Number:

Date (M/D): Serial Number:

Time:__________ a.m. p.m. Room Temperature: oC

Visual Inspection: Note any visual defects or write ‘none’.

Inductance (coil): mH

Resistance

(coil):

Cracking Voltage (1000psi Back Pressure):_________________V

With the MV100 in the OPEN (power on) position, record the Resistance Between the

following Pins of the Status Indicator:

A-B ___________ B-C _____________ A-C ___________

With the MV100 in the CLOSED (power off) position, record the Resistance Between

the following Pins of the Status Indicator

A-B ________ ___ B-C _____________ A-C ____________

Sample Test Form:

7/17/02 Reyco Henning -- TRD Box S Component Testing

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MV100 Acceptance Testing Status

• 25 out of 27 Completely Tested (94% of all tests done).

• 7 had leaks through valve seat at 0oC.• 1 had leak through valve seat at room temp.• 1 leaked to outside at all temperatures.• Recommend T > 0oC At all Times.• Electrical Characteristics + Endurance OK.

7/17/02 Reyco Henning -- TRD Box S Component Testing

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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).

7/17/02 Reyco Henning -- TRD Box S Component Testing

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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.