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

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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: - PowerPoint PPT Presentation

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Page 1: Introduction

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

IntroductionStraw Working group meeting

CERN group

1

Page 2: Introduction

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

Agenda

Page 3: Introduction

NA62 Collaboration meeting, Brussels 7-10/9/2010 3

Content

Chamber design statusStraw material newsConclusions and future

Page 4: Introduction

NA62 Collaboration meeting, Brussels 7-10/9/2010 4

Milestone achieved 1/9Message 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)”

Page 5: Introduction

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)

Page 6: Introduction

NA62 Collaboration meeting, Brussels 7-10/9/2010 6

Chamber design Ready for module 0 ~50 kSFr for one module

Page 7: Introduction

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

Page 8: Introduction

NA62 Collaboration meeting, Brussels 7-10/9/2010 8

Experience with high energy physics projects; AMS ATLAS, CMS….

Page 9: Introduction

N. Dixon PH / DT NA 62 collaboration meeting Sept 7-10 2010 Brussels 9

QC8 microns precision

Page 10: Introduction

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

Delivery and plansThe 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!

Page 11: Introduction

11

Coating of PETFraunhofer successfully coated samples on 7/7/10RNK 2600 ( coated on non treated side )

30metres 50nm Cu + 20 nmAu30metres 100nm Cu + 20 nmAu

Melinex 40630metres 50nm Cu + 20 nmAu30metres 100nm Cu + 20 nmAu

Slitting completed at Puetz Folienmaterial returned to CERN + samples sent to JINR for straw manufacturing

Page 12: Introduction

ReminderFull 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 12

Page 13: Introduction

N. Dixon PH / DT NA 62 collaboration meeting Sept 7-10 2010 Brussels 13

Tests completes and foreseenSeveral 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 parallelUltra sonic welding. (started)

MEB of weldsTensile test of weldLeak test

Aging (Malter effect)

Page 14: Introduction

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

Page 15: Introduction

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

Page 16: Introduction

NA62 Collaboration meeting, Brussels 7-10/9/2010 16

Straw storage under pressure

Page 17: Introduction

NA62 Collaboration meeting, Brussels 7-10/9/2010 17

Summary and ConclusionWe 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!!


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