F.E.T.S. Mechanical Engineering Updateby P. Savage

13th August 2008

The design of the first tank internals

is complete.

Motor chassis

Door chassis

Detector

The detector

Faraday cup is isolated from ground (against which the current will be measured).

Thin fabricated copper jacket is at 2kV to accelerate the beam and to enhance the magnetic field.

100 Amp turns onto soft iron yoke.

Soft iron (permeability = 600) dipole is at ground potential.

The motor chassisLinear motors for horizontal motion

Linear motors for vertical motion

Rotary motors x4

Mirrors

Differential pumping detector tunnel Counter-balance

weights

The door chassis

Mount to tank door

Mount to tank base

Telescopic ball slides

Mounting points for motor chassis

New one-piece rail mounts with pockets to guide screw jack transverse position. Being made by Daresbury, due for delivery on 17th September.

Modified first tank support

Screw jacks being modified by AC Precision

Cross braces being made at Imperial

Re-used from old design

Next jobs

Frames for LEBT mounting system arrive at Imperial tomorrow. Rails, rail runners, screw jacks and feet already here. System must then be aligned and delivered to RAL.

Design LEBT beam pipe sections including drift space vacuum vessel

Cost estimate:Beam pipe sections x3 = £2250

Bellows = £500Drift vessel = £7500

Pepperpot vessel = £3500Pepperpot support = £2000------------------------------------

£15750

Mount with simple MiniTec style frame, equipped with rails set at old FETS pitch so that existing alignment system can be re-used.

Upstream flange mates to beam pipe exiting LEBT and downstream flange accepts pepperpot system.

Next jobs

Jobs list

• Detector finished, parts for first tank internals being manufactured now.

• End September

• LEBT frames will be delivered on 14th August

• Assemble with rails, align and deliver to RAL.

• Complete tank stress analysis report for Jeremy Balchin.

• Calculations are done (except weld stresses), needs bringing together

• Begin conceptual design of LEBT beam pipe, vac vessel and pepperpot vessel.

• Rail alignment being done at RAL by Jim Loughrey in September.

• Everything is in place for this to happen

• Meet Serge Mathot at CERN

• Prepare

• Assemble first tank support and take to RAL

• 18th September

• Conduct first tank pump test (on/offline).

• Mount first tank

• Cage to be drilled

• Assemble internals and fit them into tank at RAL.

• Assemble, test, dismantle, anodise, re-assemble, take to RAL

• Cooling calc for RFQ

• RF power in is known – but what are losses?

• Info for Phil’s gantt chart

• Mastercam X2 trial – import vane, use material for gun drilling test.

• Laser enclosure

• CMM job for MICE