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Introduction

Introduction. Straw Working group meeting CERN group. Agenda. Content. Chamber design status Straw material news Conclusions and future. Milestone achieved 1/9. Message to the SPSC. “The following milestone deliverables were completed and are considered as final:

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Introduction

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  1. Introduction Straw Working group meeting CERN group NA62 Collaboration meeting, Brussels 7-10/9/2010

  2. Agenda NA62 Collaboration meeting, Brussels 7-10/9/2010

  3. Content • Chamber design status • Straw material news • Conclusions and future NA62 Collaboration meeting, Brussels 7-10/9/2010

  4. Milestone achieved 1/9 • Message to the SPSC “The following milestone deliverables were completed and are considered as final: The design of the STRAW chamber including; -          The final straw layout -          The chamber frame -          straw end-pieces -          spacer (straw supports) -          assembly tooling -          web (connection between straw and FE) -          cover (*) with HV, signal and gas connections -          grounding scheme -          FEM calculation for chamber deformation and stresses under vacuum were done and checked -          offers for manufacturing the first module (1/2 a chamber)  have been received (896 straws)” NA62 Collaboration meeting, Brussels 7-10/9/2010

  5. SPSC reply cont. • Next Steps:Besides the construction of the first chamber module let me provide you some information on still outstanding issues for the STRAW tracker: • -          interface parts between chamber and blue tube (this is planned to start after the chamber design, first layouts exist…) • -          readout ( one proposal  (Tell1 +HPTDC) was tested successfully  in the test beam, however, other options are been discussed) • -          services (gas, electronic racks -> ongoing work inline with other sub-detectors) • -          support for chamber in the experiment (preliminary design available) • -          installation tooling (ongoing work) NA62 Collaboration meeting, Brussels 7-10/9/2010

  6. Chamber design • Ready for module 0 ~50 kSFr for one module NA62 Collaboration meeting, Brussels 7-10/9/2010

  7. NA62 Collaboration meeting, Brussels 7-10/9/2010

  8. Experience with high energy physics projects; AMS ATLAS, CMS…. NA62 Collaboration meeting, Brussels 7-10/9/2010

  9. QC • 8 microns precision N. Dixon PH / DT NA 62 collaboration meeting Sept 7-10 2010 Brussels

  10. Delivery and plans • The assembly and full QC of the geometry will be added to the initial contract. • Delivery ~1 November (estimate) • Meaning full speed on turning table and other components required for the start-up of the assembly! NA62 Collaboration meeting, Brussels 7-10/9/2010

  11. 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 406 30metres 50nm Cu + 20 nmAu 30metres 100nm Cu + 20 nmAu Slitting completed at PuetzFolien material returned to CERN + samples sent to JINR for straw manufacturing

  12. Reminder • Full quantity ordered and in stock stock at CERN: • Hostaphan RNK 2600 36 microns 3 rolls with 1000m width: 650 mm N. Dixon PH / DT NA 62 collaboration meeting Sept 7-10 2010 Brussels

  13. Tests completes and foreseen Several QC test as specified in EDMS Id: 1079692 Mechanical (all dimensions) metal thickness. Creep test. (Ongoing) Bonding Peel of metal coating (completed) Bonding of PET to a substrate (completed) XPS analysis (completed) Permeation (ongoing) MEB (ongoing) In parallel Ultra sonic welding. (started) MEB of welds Tensile test of weld Leak test Aging (Malter effect) N. Dixon PH / DT NA 62 collaboration meeting Sept 7-10 2010 Brussels

  14. Tests completed and foreseen (cont.) Creep test. (Ongoing) Comparative measurements under load between: Hostaphan GN 4600 Hostaphan RNK 2600 Melinex 406 N. Dixon PH / DT NA 62 collaboration meeting Sept 7-10 2010 Brussels

  15. Tests completed and foreseen (cont.) Peel of metal coating (completed) Melinex 406 fails test Hostaphan RNK 2600 passes test N. Dixon PH / DT NA 62 collaboration meeting Sept 7-10 2010 Brussels

  16. Straw storage under pressure NA62 Collaboration meeting, Brussels 7-10/9/2010

  17. Summary and Conclusion • We are switching to production…. • Module 0 frame in November and start straw insertion in January • A few critical issues/decisions in the fall (Dec.): • Full straw validation (material, metallization and welding) • FE choice from studies in the lab and test beam results in 2010 • Choice for the readout (three options at present) • Last but not least: Thanks to everybody who contributed to the finalization of the TD in time!! NA62 Collaboration meeting, Brussels 7-10/9/2010

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