Paul Drumm

9 Feb 2004

MICE at

RF system: power source, distribution

Paul Drumm

RAL

Ambitious title!

Paul Drumm

03 Mar 2004

RF Baseline Design

• RF Power Design driven by cost issues (no one has the funds)

• 2 Amplifiers from LBNL = 4 MW total• 1 or 2 Amplifiers from CERN = 4 MW total (next week?)

– If 1 amplifier – needs a bigger drive?• Spare TH116 Tubes from ISIS

• Split or more amplifiers?– Hybrid device

• no satisfactory progress• ok average but not peak power• need to provide gas insulation (pk voltage > avg. voltage)

– Assume that we do R&D (trials) when we have the equipment• Need both cavities and one amplifier circuit• Test out a hybrid circuit driving two cavities

• Fall back is to provide one amplifier chain per cavity

Paul Drumm

03 Mar 2004

Progress since…

• December LBNL

– Discussed shipping equipment to RAL

– Two 2MW power amplifier circuits

– Three (300kW) driver circuits

– 4616 test stand– LBNL loan – to be written off (eventually)

Paul Drumm

03 Mar 2004

… December

• At LBNL

– Stripping down for transport

– Cleaning

– Packing

• At RAL

– Point of contact ?

Paul Drumm

03 Mar 2004

Staff…

• Roy Church

– Used up quota of days

– No Roy till April

• RF group at the Daresbury SRS

– Mike Dykes (group leader)

– Andy Moss (senior RF Engineer)

– plus two more

– MD & AM will be at the col’ab. mtg

ASTeC

Paul Drumm

03 Mar 2004

Plan for late 2004

• Limited funds– Berkeley RF system to DL– Strip down and make a technical

assessment of the equipment• Cost to refurbish• Confirm equipment is serviceable

– 6 month overlap with Roy• Review RF design in the light of

CERN RF proposal

Paul Drumm

03 Mar 2004

For next FY

• Setting up a test-stand at DL

– Hall and facilities available

– Need to have got through GW2

• i.e. be in full funding mode

Paul Drumm

03 Mar 2004

Power Amp

Paul Drumm

03 Mar 2004

4616 Test box

Paul Drumm

03 Mar 2004

300 kW Driver Amplifier