Tokyo - Topical Meeting, March 2006Tokyo - Topical Meeting, March 2006 11Peter-Raymond KettlePeter-Raymond Kettle

Beam Line UpdateBeam Line Update

• End-Caps End-Caps • Insertion SystemInsertion System• Target SystemTarget System• ScheduleSchedule

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COBRA End-COBRA End-CapsCaps• Complex design He/Vacuum/NComplex design He/Vacuum/N22/Air interface/Air interface

• Materials minimized Al & CHMaterials minimized Al & CH22/EVAL (background)/EVAL (background)• Non-disruptive Access for Insertion System, Non-disruptive Access for Insertion System, Cables, Gas etc.Cables, Gas etc.Upstream End-Cap: Upstream End-Cap: Design CompletedDesign CompletedDownstream: Downstream: On ScheduleOn Schedule virtually completed virtually completed linked to Insertion System linked to Insertion System

USUSUSUS DSDSDSDS

ManufacturerManufacturerFound &Found &

Schedule Schedule Still as Still as plannedplanned

USUSUSUSDSDSDSDS

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ManufacturerManufacturerspecialists in specialists in complex welding & complex welding & structural designstructural design

ManufacturerManufacturerspecialists in specialists in complex welding & complex welding & structural designstructural design

AMS-02 spectrometerAMS-02 spectrometerHe-vessel 2500 l He-vessel 2500 l Superfluid He for Superfluid He for ISS mission 2008ISS mission 2008

AMS-02 spectrometerAMS-02 spectrometerHe-vessel 2500 l He-vessel 2500 l Superfluid He for Superfluid He for ISS mission 2008ISS mission 2008

ISS

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Insertion SystemInsertion System

Connects to acceleratorConnects to acceleratorBeam pipeBeam pipe

Gliding supportGliding supportringsrings

NBRNBR

RETRACTED into End-CapRETRACTED into End-Cap

ReplaceReplacewithwithwindowwindow

• Gas-tight to He-side CHGas-tight to He-side CH22/EVAL window/EVAL window• normally connected to motor-driven accelerator normally connected to motor-driven accelerator beam tubebeam tube• frictional hand-drive via electric drill/crank-handlefrictional hand-drive via electric drill/crank-handle

Detailed FEM study

Electric-drill or hand driveElectric-drill or hand drive

View from InsideCOBRA

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Target Target SystemSystem

CHCH2 2 oror

RohacellRohacellCHCH2 2 oror

RohacellRohacell

Various solutions under study:Various solutions under study: UCI/PSI/KEKUCI/PSI/KEK

Permanent Muon TargetPermanent Muon Target• Rohacell foam/CHRohacell foam/CH2 2 combination combination • Complete Rohacell Complete Rohacell (too thick 2.3 - 5.3 mm)(too thick 2.3 - 5.3 mm)• CHCH22 or polystyrene Target + wire frame or polystyrene Target + wire frame

MOST LIKELY MATERIALMOST LIKELY MATERIALfor initial target PE (CHfor initial target PE (CH22=CH=CH22) a~ 0.15) a~ 0.15

or Polystyrene Cor Polystyrene C66HH55CH=CHCH=CH22 a~ 0.05 a~ 0.05

Ellipse: 6Ellipse: 6 major-axis 162 mm, minor axis 60 mmmajor-axis 162 mm, minor axis 60 mm thickness 150thickness 150µm CHµm CH22 equivalent equivalent

SupportSupport

• from DC frame- from DC frame- rotatable rotatable or translational or translational

Prototypes be investigated at UCIPrototypes be investigated at UCI

Target orientationTarget orientation

Monte-Carlo just about finishedMonte-Carlo just about finished

Various solutions under study:Various solutions under study: UCI/PSI/KEKUCI/PSI/KEK

Permanent Muon TargetPermanent Muon Target• Rohacell foam/CHRohacell foam/CH2 2 combination combination • Complete Rohacell Complete Rohacell (too thick 2.3 - 5.3 mm)(too thick 2.3 - 5.3 mm)• CHCH22 or polystyrene Target + wire frame or polystyrene Target + wire frame

MOST LIKELY MATERIALMOST LIKELY MATERIALfor initial target PE (CHfor initial target PE (CH22=CH=CH22) a~ 0.15) a~ 0.15

or Polystyrene Cor Polystyrene C66HH55CH=CHCH=CH22 a~ 0.05 a~ 0.05

Ellipse: 6Ellipse: 6 major-axis 162 mm, minor axis 60 mmmajor-axis 162 mm, minor axis 60 mm thickness 150thickness 150µm CHµm CH22 equivalent equivalent

SupportSupport

• from DC frame- from DC frame- rotatable rotatable or translational or translational

Prototypes be investigated at UCIPrototypes be investigated at UCI

Target orientationTarget orientation

Monte-Carlo just about finishedMonte-Carlo just about finished

DC Support Structure

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Target Target ParkingParking

In-Beam PositionIn-Beam Position Parked PositionParked Position

DCDCStructureStructure

InsertionInsertionBellowsBellows

Target Parking possible by simple RotationTarget Parking possible by simple RotationTarget Parking possible by simple RotationTarget Parking possible by simple Rotation

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Target Parking cont.Target Parking cont.

DC-extentDC-extent

InsertionInsertionBellowsBellows

TargetTarget

Simple target RotationSimple target Rotation possiblepossibleShown: Shown: = 0 = 0 ̊ Beam̊ Beam 52 ̊ Touching 52 ̊ Touching 80 ̊ Parked80 ̊ Parked

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ScheduleSchedule

US: Manufacture ~ Beg. May EARLIER???US: Manufacture ~ Beg. May EARLIER???US: Manufacture ~ Beg. May EARLIER???US: Manufacture ~ Beg. May EARLIER???

DS: Manufacture ~ Mid June EARLIER ???DS: Manufacture ~ Mid June EARLIER ???DS: Manufacture ~ Mid June EARLIER ???DS: Manufacture ~ Mid June EARLIER ???