Relocation of Daresbury MEIS to Huddersfield University Paul Bailey UK MEIS Facility STFC Daresbury Laboratory, UK

Relocation of Daresbury MEIS to Huddersfield

University

Paul BaileyUK MEIS Facility

STFC Daresbury Laboratory, UK

Huddersfield8th December 2011

Daresbury MEIS

Daresbury MEIS



Daresbury MEIS

Important Aspects of the New Machine


Some components are contaminated with 14C and 3H (very low level)Every component removed has to be cleared for radiation, recorded and labelled

The ion source and power supplies need to float to high ~ 200 kV voltageso require a high voltage platform

Need to design and manufacture a 200 kV acceleration lens

Need to consider the state of the control system

Radioactivity


Some components are contaminated with 14C and 3H (very low level)Every component removed has to be cleared for radiation, recorded and labelled

High Voltage Platform


2 spare insulating legsrated at 500 kV havebeen split into 4 ratedat 250 kV

maximum beam energywas 500 kVwe only ever used upto 200 kVso limit new facility to200 kV

0.75 m

Acceleration lens


We need an acceleration lens to increase the beam energy from

20 kV up the final energy

Usually use 100 kV, but 200 kV maximum is needed

The one we use is 14C contaminated – no good!

So, we get one made by ‘beefing up’ Jaap’s 100 kV design

But the manufacturer cannot accommodate the size required

So we buy 2 100 kV lenses

But the cost goes up to £20k

We have a spare but this is labelled as 3H contaminated – any good?

Testing reveals no discernable activity – good!

Acceleration lens


Close inspection reveals a modular construction

1.5 m

Acceleration lens


Should be OK if we can dismantle it without damage

Control System


Whilst MEIS has a working control system, we have no expertise

or support if something goes wrong

Essentially we have been using it on ‘borrowed’ time

We need a control system because of the complexity of MEIS and

because we have power supplies that float at high voltages

Do we try and use the existing control system?

What are the alternatives?

Control System(s)


A simple way to control at high voltages

Control System(s)


A better way?

Control System(s)


Control System(s)


Unfortunately... this is the wiring for one EQT

Control System


The plan is - to bring the existing system to Huddersfield

But, I think we need to look at alternatives with some haste

liftingframe

HT platform1.5x2.0

HT enclosure3.5x3.5

Raised floor5.5x5.5

Accommodation

11.0 m

Beamline Magnet


We have a smaller magnet which is much lighter (existing is 5 Tonnes)

But its horizontal focusing is too strong

Relocation of Daresbury MEIS to Huddersfield

University

Paul BaileyUK MEIS Facility

International Institute for Accelerator Applications

Huddersfield University, UK



Documents

Relocation of Daresbury MEIS to Huddersfield University Paul Bailey UK MEIS Facility STFC Daresbury Laboratory, UK