Collaboration meeting, RAL, 4 th – 7th November 2009 Andrew Moss ASTeC Collaboration meeting, RAL,...

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Collaboration meeting, RAL, 4 th – 7th November 2009 Andrew Moss ASTeC Collaboration meeting, RAL, 10 th – 13 th november 2009 MICE RF Amplifier Status

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Transcript of Collaboration meeting, RAL, 4 th – 7th November 2009 Andrew Moss ASTeC Collaboration meeting, RAL,...

Page 1: Collaboration meeting, RAL, 4 th – 7th November 2009 Andrew Moss ASTeC Collaboration meeting, RAL, 10 th – 13 th november 2009 MICE RF Amplifier Status.

Collaboration meeting, RAL, 4th – 7th November 2009

Andrew MossASTeC

Collaboration meeting, RAL, 10th – 13th november 2009

MICE RF Amplifier Status

Page 2: Collaboration meeting, RAL, 4 th – 7th November 2009 Andrew Moss ASTeC Collaboration meeting, RAL, 10 th – 13 th november 2009 MICE RF Amplifier Status.

Collaboration meeting, RAL, 7th – 10th October 2007

Andrew Moss

Outline

• Testing of medium power amplifier

• Rebuild of large amplifier

• Testing of large amplifier

• MICE hall design/implementation

• Conclusion

Page 3: Collaboration meeting, RAL, 4 th – 7th November 2009 Andrew Moss ASTeC Collaboration meeting, RAL, 10 th – 13 th november 2009 MICE RF Amplifier Status.

Collaboration meeting, RAL, 7th – 10th October 2007

Andrew MossCollaboration meeting, RAL, 7th – 10th October 2007

Andrew Moss

2 MW Amplifier

2 MW Amplifier

Master OscillatorControls etc

201 MHz Cavity Module

2 MW Amplifier

2 MW Amplifier

201 MHz Cavity Module

LBNL

CERN300 kW Amplifier

300 kW Amplifier

300 kW Amplifier

300 kW Amplifier

HT Supplies

HT Supplies

Daresbury

DL Test System

The Task for Daresbury RF group

Page 4: Collaboration meeting, RAL, 4 th – 7th November 2009 Andrew Moss ASTeC Collaboration meeting, RAL, 10 th – 13 th november 2009 MICE RF Amplifier Status.

Collaboration meeting, RAL, 7th – 10th October 2007

Andrew Moss

Daresbury Test system

Page 5: Collaboration meeting, RAL, 4 th – 7th November 2009 Andrew Moss ASTeC Collaboration meeting, RAL, 10 th – 13 th november 2009 MICE RF Amplifier Status.

4616 Amplifier Testing• Retesting of medium power amplifier system before connection to high power system

•New PLC control system looks after all power supplies interlocks and local safety – equipment doors etc

•Old Berkeley 4616 tube still installed and produced – 100kW power quite easily – more possible with time, will test again next week

•CERN test load will then be disconnected and system connected to power large amplifier

Collaboration meeting, RAL, 7th – 10th October 2007

Andrew Moss

Page 6: Collaboration meeting, RAL, 4 th – 7th November 2009 Andrew Moss ASTeC Collaboration meeting, RAL, 10 th – 13 th november 2009 MICE RF Amplifier Status.

Amplifier rebuildOriginal 116 amp Refurbished 116 amp

Collaboration meeting, RAL, 7th – 10th October 2007

Andrew Moss

Page 7: Collaboration meeting, RAL, 4 th – 7th November 2009 Andrew Moss ASTeC Collaboration meeting, RAL, 10 th – 13 th november 2009 MICE RF Amplifier Status.

Collaboration meeting, RAL, 7th – 10th October 2007

Andrew Moss

Electrical controls

• Base of amplifier includes air blowers, cathode switcher, filament PSU and control electronics

• Electrical systems being tested now

• RF input ready to be connected up to 4616 amp

Page 8: Collaboration meeting, RAL, 4 th – 7th November 2009 Andrew Moss ASTeC Collaboration meeting, RAL, 10 th – 13 th november 2009 MICE RF Amplifier Status.

Collaboration meeting, RAL, 7th – 10th October 2007

Andrew Moss

Base of amplifier

Page 9: Collaboration meeting, RAL, 4 th – 7th November 2009 Andrew Moss ASTeC Collaboration meeting, RAL, 10 th – 13 th november 2009 MICE RF Amplifier Status.

RF test load

• 1 megawatt test load installed on stand and piped up to glycol cooling

• 200kw load being used for 4616 test, needs to be removed before connection can be made

• Can be moved to RAL for tests in hall

Collaboration meeting, RAL, 7th – 10th October 2007

Andrew Moss

Page 10: Collaboration meeting, RAL, 4 th – 7th November 2009 Andrew Moss ASTeC Collaboration meeting, RAL, 10 th – 13 th november 2009 MICE RF Amplifier Status.

116 amplifier output•Problem found with using original HT connection, quick solution was to use part of one of the CERN amplifiers

•CERN/Berkeley amps are directly compatible in this area

•Water supplies connect through 40kV HT connection to amplifier valve for cooling -complex arrangement, we can copy it from CERN drawings

•Water input and return

•Output match tuning stub

•Coax 9 inch to 6 inch transition and output

Collaboration meeting, RAL, 7th – 10th October 2007

Page 11: Collaboration meeting, RAL, 4 th – 7th November 2009 Andrew Moss ASTeC Collaboration meeting, RAL, 10 th – 13 th november 2009 MICE RF Amplifier Status.

Amplifier tuning

Tuneable coax sections old Remote control section new

Collaboration meeting, RAL, 7th – 10th October 2007

Andrew Moss

Page 12: Collaboration meeting, RAL, 4 th – 7th November 2009 Andrew Moss ASTeC Collaboration meeting, RAL, 10 th – 13 th november 2009 MICE RF Amplifier Status.

RF Testing• Retest of 4616 has been done this week• Electrical checks of 116 auxiliary electrical systems

underway• CERN HT connection used• Next week connect up drive coax between 4616 and

116 (with loaned flexible section from RAL linac group)

• Should have results of testing with RF in December for entire system into load

Collaboration meeting, RAL, 7th – 10th October 2007

Andrew Moss

Page 13: Collaboration meeting, RAL, 4 th – 7th November 2009 Andrew Moss ASTeC Collaboration meeting, RAL, 10 th – 13 th november 2009 MICE RF Amplifier Status.

Hall design

Collaboration meeting, RAL, 7th – 10th October 2007

Andrew Moss

• 6 inch distribution coax will be used from amplifiers• Large phase shifters will be needed 3-4 meter devices• hybrid power splitter with a 1MW reject load for each

cavity • Phase shifters needed to used to correct for phase error

at cavity coupler, possible to use limited range probe style phase shifters

• Rotary joints before cavity inputs to allow disconnection of cavity/testing into load

• Nitrogen pressure in coax to help prevent breakdown and provide interlock for coax guide complete

Page 14: Collaboration meeting, RAL, 4 th – 7th November 2009 Andrew Moss ASTeC Collaboration meeting, RAL, 10 th – 13 th november 2009 MICE RF Amplifier Status.

Collaboration meeting, RAL, 7th – 10th October 2007

Andrew Moss

Amplifier to cavity installation 1

Page 15: Collaboration meeting, RAL, 4 th – 7th November 2009 Andrew Moss ASTeC Collaboration meeting, RAL, 10 th – 13 th november 2009 MICE RF Amplifier Status.

Collaboration meeting, RAL, 7th – 10th October 2007

Andrew Moss

Amplifier to cavity installation 2

Page 16: Collaboration meeting, RAL, 4 th – 7th November 2009 Andrew Moss ASTeC Collaboration meeting, RAL, 10 th – 13 th november 2009 MICE RF Amplifier Status.

Collaboration meeting, RAL, 7th – 10th October 2007

Andrew Moss

Coax components• 4 1MW loads

needed for each RFCC installation

• 1 RF trombone for Berkeley amp ~ Big!

• 2 RF trombones for CERN amp

3 meters long

Page 17: Collaboration meeting, RAL, 4 th – 7th November 2009 Andrew Moss ASTeC Collaboration meeting, RAL, 10 th – 13 th november 2009 MICE RF Amplifier Status.

Hall implementation• RF coax has to be this big to stand off the

voltages inside• Design of layout of coax and components will

be started very soon• Need to develop CAD models to see how it

will all fit under the floor• Search to find smaller devices, need to liaise

with manufactures and perhaps test at DL to check operation

Collaboration meeting, RAL, 7th – 10th October 2007

Andrew Moss

Page 18: Collaboration meeting, RAL, 4 th – 7th November 2009 Andrew Moss ASTeC Collaboration meeting, RAL, 10 th – 13 th november 2009 MICE RF Amplifier Status.

Collaboration meeting, RAL, 7th – 10th October 2007

Andrew Moss

Plan

• Test 116 amplifier

• Design hall coax in detail and work out how to fit it all in space for steps 5 and 6

• Assemble CERN amplifier and test with current power supplies

• Autumn 2010 move first amplifier system to MICE hall and install

Page 19: Collaboration meeting, RAL, 4 th – 7th November 2009 Andrew Moss ASTeC Collaboration meeting, RAL, 10 th – 13 th november 2009 MICE RF Amplifier Status.

CERN amplifier awaiting assembly

Collaboration meeting, RAL, 7th – 10th October 2007

Andrew Moss

Page 20: Collaboration meeting, RAL, 4 th – 7th November 2009 Andrew Moss ASTeC Collaboration meeting, RAL, 10 th – 13 th november 2009 MICE RF Amplifier Status.

Collaboration meeting, RAL, 7th – 10th October 2007

Andrew Moss

Conclusion

• Large amplifier ready and will re-commission to 1MW using old tubes

• Will run for as long as possible to develop understanding and look for weak points

• CERN amplifiers on site awaiting build• Hall layout needs careful work • search for smaller key coax component’s if possible• Two new TH116 tubes have been delivered to DL,

two more due soon


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