HPS240. Integration of Moving Beam Pipe and detector box

AFP-HPS 240 15/03/2011 1D. D. INFN To/CERN PH UCM

HPS240. Integration of Moving Beam Pipe and detector box.

1. Re-collection Layout of moving beam pipe on New connection Cryostat

2. Beam Vacuum requirements3. FP420 Beam Pipe design 4. New single window Beam pipe for HPS5. Beam Position monitor integration on BP6. Si tracker package7. Detector box8. Bellows9. Motorization10. HPS Prototype Work Package Torino ( Mechanics)


Layout




FP420 Moveable Beam Pipe Integration in New connection Cryostat


FP420 Moveable Beam Pipe on support table.


BEAM VACUUM REQUIREMENTS

High conductivity copper internal coating, tapered

angle< 15.

Need close collaboration with CERN RF and AT/VAC experts

Mandatory discussion on material and design from very early stage of conception.



Coutesy of UC Louvain F.Benoit , K.Piotrzkowski

• Latest Prototype realized.

Two pockets are now laser welded.

FP 420 Beam Pipe (UC Louvain)


HPS 240 Beam Pipe. Torino Proposal

• Single thin window. Length 450mm.• Machined by Wire Electro erosion from SS 316 LN solid bar.• Present design of thin windows similar (20x20mm) to FP420 BP.

Details to be discussed with CERN groups .• Beam Position Monitor integrated by laser welding.

STATUS: Material from CERN Store (following AT/VAC specification) already delivered in Torino mech. Workshop.Update design of thin windows, Flanges and BPM interface.FE Analysis.Validation .WEDM Machine available from mid April.


HPS Beam pipe design –DRAFT-- 1


HPS Beam pipe design –DRAFT-- 2


HPS Beam pipe design –DRAFT-- 2 det.


Courtesy Ray Thompson and Manchester Group.

Si detector package. Layout for FP420. Manchester group.

TO DO:Silicon board design to be defined.Design. To be adapted to HPS240.

Cooling still to be defined and integrated


Silicon 3d mounting proposal (FP420)

Conical seat

Flat seat

V groove seat

Synthetics ruby balls

Carbon bearing system

Carbon blades support on cap and synthetics ruby balls fixed on detector frame.

Components act as reference system and thermal insulator.Cooling feedthroughs

Electrical feedthroughs


Detector Box V2---DRAFT--This New Detector Box host Quartic or Gastof and Silicon Tracker.Internal dimensions are: 230 x 510 x 125 (mm)The enclosed volume is vacuum tight (secondary vacuum).Definition of detector dimension , required services and feed trough is to be defined.


BELLOWS


Specification:• Stainless steel AISI 316L or AISI 316Ti.• Vacuum tight.• Bake out to 250 C• Lateral offset +/- 31mm• Quantity 16 pcs.• Life cycle expectancy >>10.000 cycles

Bellows with intermediate tube allows extensive lateral movements minimizing stress.

In this studio diameter is over dimensioned, D=107,4mm, to allows integration of RF screen.

In case RF screen result not necessary, internal diameter can be reduced to 96mm; 93mm; or 85mm.

Bellows Studio. Witzenmann Standard corrugated tube. (CERN Supplier)

RF screen to shield the bellows from the beam?• Develop design in close collaboration

with AT/VAC.• Validate and finalize design and

manufacture to realize a prototype for tests.

INFN To


Motor and controls hardware (lvdt, stops) are assumed to be the same of collimators.

Nevertheless some aspect are not yet clear. Auto retraction in garage position in case of hardware or control failure may require feature not compatible with the present layout.

A preliminary risk analysis is necessary to assess the validity of adopted solution.

Motorization and controls.


Beam Position Monitor on Moveable Beam Pipe.The Beam Position Monitor on the Moveable Beam Pipe Station is now integrated on the Beam Pipe.In the figure a body of BPM used in LHC beam instrumentation is adapted. This body has been suggested as the most likely adaptable to our scope (FP420).Finalization of Beam Pipe design require also definition of this component. We need to re-establish contact in BE/AT group .


INFN Torino Prototype WP’s Collaboration..

INFN Torino group is involved from the very preliminary (2005) R&D studies of feasibility on FP420.

We can offer collaboration on integration, engineering, design, manufacture, dimensional controls, assembly and installation of moving beam pipe and Si detector package. In particular concerning the realization of a complete prototype for HPS 240, we can take care to design and manufacture a new beam pipe with detector box, body of Beam position monitor, interfaces for motorization and supporting table.


• Integration of various components still need effort to be effectively defined.

• Close collaboration with CERN group is mandatory and necessary to finalize the design.

• Collaboration with AFP would be very useful

• In Torino we can start production of aprototype beam pipe from April. Still many detail need to be agreed and finalized .

• Thanks.

Conclusion.


Wire electrical discharge machining (WEDM)

Some of the advantages of EDM :Complex and high precision shapes that would otherwise be difficult to produce with conventional cutting toolsWire-cutting EDM is commonly used when low residual stresses are desired.There is no direct contact between tool and work piece. Therefore delicate sections and weak materials can be machined without any distortion.A good surface finish can be obtained.

This WEDM will be delivered in Torino Mech. Workshop by end of March.

Max. Workpiece dimension: 1050 x 500 x 600 (mm)


Coordinate Measuring Machine (CMM)

Poli Galaxy Maxi CMMMaterial: Granite Construction Capacity (mm) : X 2300; Y 1200 ; Z 1000. Accuracy: 0.005 mmSoftware: DEA PC-DMIS ®

Mitutoyo CRT Apex C574Material: Granite Construction Capacity (mm) : X 505; Y 705 ; Z 405. Accuracy: 0.001 mmSoftware: DEA PC-DMIS ®

ZEISS Accura II (INFN PD)Material: Granite Construction Capacity (mm) : X 1200; Y 900 ; Z 700. Accuracy: 0.002 mmSoftware: Calypso

Equipped with Active Extension Stylus

Documents

HPS240. Integration of Moving Beam Pipe and detector box