High Power RF Systems (352 MHZ - 12 GHz) High Efficiency Power Sources High Voltage Systems High Gradient Accelerating Structures.

Olivier Brunner, on behalf of RF/MK.

RF/MK: 2014 in a nutshell

What we do…

High Power RF Systems (352 MHZ - 12 GHz)

High Efficiency Power Sources

High Voltage Systems

High Gradient Accelerating Structures

Who we are… 36 persons 9 status

• FELL• DOCT• PJAS• STAFF• VISC• COAS• ADMI• DOCT• TRN

14 nations• Scotland• Italy• Russia• Holland• Spain• Germany• Swizerland• France• Belgium• Japan• Finland• Hungary• Greece• Pakistan

a big THANK YOU to everyone !!!

The LHC RF System

LS1 activities: Upgrade, Repair, Commissioning

• HV connectors repair campaign (>100)• New crowbar systems• Replacement of obsolete equipment (e.g. Tetrode):R&D in

progress• New arc detectors (License agreement signed with an external company)

• Control system upgrade• Reliability is a key issue here

Energetic & sporting activities

Diet plans: http://www.eatingwell.com/nutrition_health/weight_loss

Installation: equipment, waveguides, water cooling, local cabling LEP equipment: 20 – 30 year old! , CW klystrons now being pulsed 6 HPRF units fully commissioned / on schedule Reliability is a key issue here

Linac 4 – HPRF system installation and commissioning

Linac 4 – HPRF development

3 post phase tuner• 352MHz, 1.5 MW peak• WR 2300, L = 1500 mm, r1=70mm, r2 = 40mm • VSWR ≈ 1.2 [depth 0 -> 100 mm]• S11 ≤ -30 dB [depth 0 -> 90 mm]• Range: ≈ max 60˚

CTF3 Facility

CTF3 maintenance, upgrade & operation :• 11 S Band and 1 L Band power sources• Complexe waveguide systems• HV system upgrade (thyratron replacement by solid state devices)

Plateform for experiments

The test Beam Line (TBL): a small scale version of a CLIC decelerator

Experimental demonstration of the:• deceleration process • beam dymanic issues• power production in PETS• power transfer to accelerating structures• main beam acceleration => high gradients

Drive Beam front-end developments

Gun SHB 1-2-3 PB Buncher Acc. Structures

500 MHzModulator-klystrons, 1 GHz,

20 MW

~ 140 keV ~ 12 MeV

Diagnostics

Beam dynamics studies completed Gun and buncher prototypes being

constructed

Zone with welding defect

Thales Electron Devices:10 beam multi beam klystrons77 % efficiency calculated

Toshiba:6 beam multi beam klystrons75 % efficiency calculated

Delivery and test in 2016

Drive Beam front end RF power

• Development of a very high efficiency L-band multi-beam klystron with industry

• 1 GHz, 20 MW, 150 ms, 50 Hz, > 70% efficiency

First CLIC prototype module installed in CLEX

TD26R05CC

Zone with welding defectOur range: 100 MV/m CLIC 50 MV/m low-β proton therapy linacs

High Gradient Activities

State-of-the-acceleration: Normal conducting:

≈30 MV/m SwissFEL Superconducting:

31.5 MV/m ILC LHC < 8MV/m Not only for CLIC !

Applications of High Gradient Linac Technology

High Gradient Structures

222

mm

Production of RF accelerating structures is very challenging

It comprises subsequent steps and quality analysis control

High Gradient Testing – Xbox1

TD26R05CC

Full-fledged CLIC accelerating structure TD26R05CC build by CERN is successfully processed in XBOX1 up to 107 MW/m at 250 ns pulses

High Gradient Testing – Xbox2

High Gradient Testing – Xboxe3

Presented by Igor

MERRY CHRISTMASS AND HAPPY NEW YEAR