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Machinery Systems Sales Department

1 October 2018

DELIVERY RECORD

MHIMS0115015

Client: Paul Scherrer InstitutFacility: SwissFEL (Swiss Free Electron Laser)Location: Villigen, Switzerland

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OUTLINEMHIMS0115015

1. OVERVIEW

2. C-BAND WAVEGUIDE NETWORK PROTOTYPE

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1. OVERVIEWMHIMS0115015

Courtesy of PSI

SwissFEL Main ParametersOverall length (incl. experimental hall) 740 m

Total electric power consumption 3.8 MW

Electron beam energy 5.8 GeV

Technology of linear accelerator

Normal-conducting copper cavities at 6 GHz

Charge per electron pulse 0.2 nC

Normalized beam emittance 0.4 mm∙mrad

Number of X-ray pulses per second

200 (100 at each photon beamline)

X-ray pulse duration 24 fs

X-ray brilliance 1.3∙1033 photons/∙(s∙0.1%∙b.w.∙mm2∙mrad2)

Shortest lasing wavelength 0.1 nm

Aerial View of SwissFEL

Aerial View of PSI

Swiss Light Source (SLS)

SwissFEL

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2.1 C-BAND WAVEGUIDE NETWORK PROTOTYPE

MHIMS0115015

Main ParametersBandwidth 5712 +/- 20 MHz

Peak power 320 MW1

Average power 15 kW

Pulse repetition rate 1-100 Hz

VSWR < 1.04

Operating pressure < 1x10-6 Pa

Waveguide size WR187

Coupling of the RF monitor

-60 +/- 2 dB(5712 +/- 3 MHz)

Directivity of the RF monitor

> 25 dB(5712 +/- 20 MHz)

RF symmetry errorof splitters

< 0.1 dB in amplitude< 3° in phase

1 Maximum power in between the pulse compressor and the 1st splitter.

~6.1 m

~7.2 m

Dimension accuracy: ±0.2mm

Horizontal waveguide

Vertical waveguide

Overview of the C-band waveguide network prototype

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2.2 C-BAND WAVEGUIDE NETWORK PROTOTYPE

MHIMS0115015

HorizontalWaveguide

VerticalWaveguide

Installed in High Power Test Stand at PSI

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2.3 C-BAND WAVEGUIDE NETWORK PROTOTYPEMHIMS0115015

Schematic of the RF monitorSchematic of the H-plane splitter

0

0.5

1

1.5

2

2.5

0

0.01

0.02

0.03

0.04

0.05

0.06

0.07

0.08

0.09

0.1

E splitter H splitter #1 H splitter #2

Sym

met

ry e

rror

(pha

se) [

degr

ee]

Sym

met

ry e

rror

(am

plitu

de) [

dB]

Component

Symmetry error (amplitude) [dB]

Symmetry error (phase) [degree]

Symmetry error of splitters in the prototype module

20

25

30

35

40

45

50

55

60

-62

-61.5

-61

-60.5

-60

-59.5

-59

-58.5

-58

1 2 3 4 5 6

Dire

ctiv

ity [d

B]

Coup

ling

[dB]

Monitor No.

Coupling [dB]

Directivity [dB]

Coupling and directivity of RF monitors in the prototype module

Coupling: S31Directivity: S31-S32