N. Dixon PH / DT CERN 12 July Straw Material, weld line latest news and plans

N. Dixon PH / DT CERN 12 July Material. Status. Tests foreseen + QC. Weld line. Status. Foreseen modifications. Straw storage under pressure. Nipple design. Control in time.

N. Dixon PH / DT CERN 12 July Coating of PET Fraunhofer successfully coated samples on 7/7/10 RNK 2600 ( coated on non treated side ) 30metres 50nm Cu + 20 nmAu 30metres 100nm Cu + 20 nmAu Melinex metres 50nm Cu + 20 nmAu 30metres 100nm Cu + 20 nmAu Slitting to follow, and return to CERN week 30

N. Dixon PH / DT CERN 12 July Tests foreseen + QC Several QC test as specified in EDMS Id: Mechanical (all dimensions) Creep test. Bonding Peel of metal coating Bonding of PET to a substrate XPS analysis PermeationMEB In parallel Ultra sonic welding. MEB MEB Tensile test of weld Leak test

N. Dixon PH / DT CERN 12 July Weld Line Progress made since December 2009 (last visit) Weld line now installed in clean and controlled environment. Drawing mechanism. Forward speed for quality weld. Online microscope control of weld. Not yet completed, or new actions: by SEPTEMBER 2010 Overlap of seem / Seem size. Repeatability. Spool tension device, with active control. Exists but not fitted. Tension to be calibrated as this directly affects tape buckling Pre shaping rollers, to minimise tape buckling. New anvil Design, to be completed + manufacture. Force needed on sonotrode. Needs to be calibrated dead weight. Sonotrode shape design to be a copy of current horn. Ski device to be fitted in front of the fixture. Fixture to be shortened. Metrology of all parts. For assembly and alignment purposes. Clean room working conditions to be followed Traceability of weld campaigns to include date, spool used, weld parameters, T, humidity, quantity produced, tool wear, comments...). All changes occurring on the line to be recorded in a database

N. Dixon PH / DT CERN 12 July Weld Line Weld line now installed in clean and controlled environment.

N. Dixon PH / DT CERN 12 July Dec-15 S.Movchan Straw manufacturing and QC Seam shape on-line QC by microscope set up weld seam shape

N. Dixon PH / DT CERN 12 July Dec-15 S.Movchan Straw manufacturing and QC 8 Software: seam quality on-line control Each seam photo size is about 8x10 mm2 at zoom x16 and straw production speed of V=9 mm/sec. So we have some frame overlapping of neighbor Photos. File record – set of about 250.bmp photos File processing: - modes: - manual - auto (0.8 sec per frame) -good/bad seam alarm level: - typical is 0.05

N. Dixon PH / DT CERN 12 July Straw machine in JINR

N. Dixon PH / DT CERN 12 July Straw machine in JINR

N. Dixon PH / DT CERN 12 July Straw storage under pressure Nipple design. Simple design with no moving parts. Straw tube sideGas inlet side

N. Dixon PH / DT CERN 12 July Latex Tube is non-return valve Latex tube

N. Dixon PH / DT CERN 12 July Straw storage under pressure

N. Dixon PH / DT CERN 12 July Conclusions 14 Weld line needs more work before becoming fully operational. PET research and development appears to be coming to an end. We have solutions JINR / CERN for storage under pressure. We should target a start date for full production in September 2010

N. Dixon PH / DT CERN 12 July JINR nipple solutions follow First presented in Dubna 7/7/10 by V. Elsha, T. Enik

N. Dixon PH / DT CERN 12 July Manufacturing end plugs for straw Dubna V. Elsha, T. Enik

N. Dixon PH / DT CERN 12 July Manufacturing end plugs is necessary for long term leakage test of the straw in storage time under pressure One of two end plug should be possibly inside of the straw for easy mounting because overpressure in the straw is useful for mounting straw to frame Was tested three types of end plugs which may be used in different combination All of them seems to be suitable Final choice will be complete with sufficient production statistic V. Elsha, T. Enik Dubna

N. Dixon PH / DT CERN 12 July Filled end plug V. Elsha, T. Enik Dubna Polymerization should be finished with straw in vertical position.

N. Dixon PH / DT CERN 12 July Filled end plug with nipple Preparation of the cap V. Elsha, T. Enik Dubna These are the same processes like previous

N. Dixon PH / DT CERN 12 July Pumping of the straw V. Elsha, T. Enik Dubna Cut off thick part is good for mounting over pressured straw Polymerization should be finished under pressure

N. Dixon PH / DT CERN 12 July Filled Internal end plug V. Elsha, T. Enik Dubna Stycast On the another side of the straw should be nipple plug

N. Dixon PH / DT CERN 12 July Nipple from pneumatic tyre Mechanical treatment is necessary Gluing Pumping Leakage water test Max. leakage is 4 mm 2 /day for 1 of 4 straw V. Elsha, T. Enik Dubna

N. Dixon PH / DT CERN 12 July Conclusion End plugs filled in cap: + seems to be reliable compacting - need high room for vertical polymerizations - need additional cutting operation End plug filled on silicone: + inside of the straw (low diameter) - need high room for vertical polymerizations - compacting depend on adhesion End plug glued to straw: + There is possibility easy adjust pressure in the straw - Need mechanical treatment - High weight and cost V. Elsha, T. Enik Dubna