Matheisen cleaning cold part

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Slide1: Qualification of cleaning equipment Cleaning sequences Definition of ultra pure water Quality check of degreasing and cleaning processes Acceptance on installation accessories Power coupler workshop 5-6-11.2007 DESY Hamburg Data and information given are based on sequences and tool at DESY status Nov 2007 implemented by DESY group MKS 3

Slide2: Cleaning of components at DESY Rough cleaning large components modified car wash Small components modified dish washer Fine cleaning ultrasonic cleaning rinsing with ultra pure water Drying in class 10 (ASTM) atmosphere Final cleaning Air flow cleaning and particle control Cleaning sequences

Slide3: Cleaning procedure of power couplers Status 2004 “ standard” cleaning (StC) for test of cold parts in respect of particle contamination

Slide4: Definition of ultra pure water

Slide5: Test on cleaning procedure Nb sample polluted with grease and oil Not efficient cleaning After Ultrasonic cleaning with TICOPUR 33 Quality check of degreasing

Slide6: Test Sequence for cleaning method of flanges Ultrasonic cleaning and rinsing in ultra pure water Sonosys megasonic® cleaning hand held single cell DESY standard Process (Ultrasonic cleaning- Ultra pure water rinsing and blowing with ionized Nitrogen (Pulsed gun) Quality check of cleaning processes

Slide7: Resistance: measured in rinsing water of inside of power coupler cold part  QC documentation 2) Particles: <10 counts / min (total Canal 0,3 µm and larger)  Measured before installation 3) on Test stand 4) and after installation Vacuum: See info MVS Residual masses: See info MVS Acceptance of power coupler cold part to be installed to ca cavity