CERN X-band Test-StandCERN X-band Test-Stand

CERN - CEA – PSI – SLAC

High voltage modulator

Klystron XL5

Directional coupler

Circular waveguide =50 mm

SLED Pulse compressor

Mode convertorsRF Valve

Circular pumping port

Status 03/2010

MilestonesMilestones

12.2006 CLIC Frequency change: 30 GHz ► 12 GHz 01.2008 Mandate for 12 GHz test-stand at CERN 10.2008 SLAC WFOA: Design and Production of

klystron 09.2008 “ French White Paper”: Modulator, PC and

RF-Component Supply 12.2008 CERN component review 02.2009 Pulse Compressor order to GYCOM 05.2009 CEA tender for Modulator 09.2009 Modulator contract with Scandinova 12.2009 Start of klystron testing at SLAC

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OrganizationOrganization

CLIC WS October 08

KlystronG.McMonagleG. Rossat

ModulatorCEA &G.McMonagle

WaveguidesG.McMonagleG. Rossat

Pulse CompressorCEA &I.SyratchevK. Schirm

Operation/ControlsM.DraperS. Dobert

Low-level RFJ. MourierL. Timeo

InfrastructureJ.MonteiroK. Schirm

Test-StandG.RiddoneS. DobertK. Schirm

G. McMonagleF. Peauger CEAK. Schirm

KlystronKlystron

KM Schirm BE-RF4

XL5 2AXL5 2A

5

XL5 dressingXL5 dressing

6

XL5 1A testingXL5 1A testing

7

TWT driverTWT driver

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ComponentsComponents

GYCOM

Cooling System

Oil Pumps/Filter

Filament PS Core Bias PS

Primary Power Connections

Control PCB, Sol PS, Vac PS, RF equippment

HVPS, New place

Flow Guards

RF-Valve Courtesy: F. Peauger CEA

Pulse Compressor Courtesy: GYCOM/I. Syratchev

Pulse Compressor Pulse Compressor (GYCOM)(GYCOM)

KM Schirm BE-RF 10

CLIC WS 10/2009 KM Schirm BE-RF 11 1Time (ns)

Output PC power amplitude (MW)

Input PC power amplitude (MW)

Input PC power phase (deg)

Time (ns)

Q0 = 150000

QL = 25000

β=Q0/Qx = 5

Reflexion coef = 0.67

SLED Filling time = 0.663 µs

Phase step of 86 deg (1.5 rad) and linear variation from 86 to 180 deg

Filling SLED: 1.2 µs

Slope phase step: 20 ns

Flat top : 300 ns

120 MW, 300 ns assuming 15% of losses in the RF network

Pulse waveform after SLED compression

Power multiplication factor = 2.75

LL-RFLL-RF

Collaboration Meeting 01/2009 KM Schirm BE-RF12

FlangesFlanges

CLIC WS 10/2009 KM Schirm BE-RF 13

ConclusionConclusion

Delays in the supply of modulator, some RF network components and installation (due to fire)

Klystron performance promising Pulse Compressor needs additional effort Installation will proceed in 3 phases: Power source

commissioning - RF network comm. – Test Stand comm.

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