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

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

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

Milestone achieved 1/9 NA62 Collaboration meeting, Brussels 7-10/9/ 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)”

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 5

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

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

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

QC 8 microns precision N. Dixon PH / DT NA 62 collaboration meeting Sept Brussels 9

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/

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 metres 50nm Cu + 20 nmAu 30metres 100nm Cu + 20 nmAu Slitting completed at Puetz Folien material returned to CERN + samples sent to JINR for straw manufacturing

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

N. Dixon PH / DT NA 62 collaboration meeting Sept Brussels 13 Tests completes and foreseen Several QC test as specified in EDMS Id: 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 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 Brussels 15 Tests completed and foreseen (cont.) Peel of metal coating (completed) Melinex 406 fails testHostaphan RNK 2600 passes test

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

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/