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PETRA III at DESY Hamburg/Germany. Good morning!. Introduction Schedule Overview Parameter Machine RF-System S cenarios Conclusion. PETRA as a New High Brilliance Synchrotron Radiation Source.

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Good morning

PETRA III at DESY Hamburg/Germany

Good morning!

  • Introduction

  • Schedule

  • Overview

  • Parameter

    • Machine

    • RF-System

  • Scenarios

  • Conclusion

DESY Stefan Wilke


Petra as a new high brilliance synchrotron radiation source

PETRA as a New High Brilliance Synchrotron Radiation Source

  • DESY plans to convert the PETRA II storage ring, which is now used as a proton/lepton preacceleratorto HERA and as a synchrotron radiation source forHASYLAB, into a new high brilliance third generationsynchrotron radiation source.

  • Make use of existing hardware whenever possible

  • To ensure reliable machine operation

    • New vacuum system (decoupling of chamber and quads)

    • Installation of more correctors and beam position monitors

    • Replace radiation damaged coils of magnets

    • New coupled bunch feedback system

    • Etc.

    • Modernize rf system

DESY Stefan Wilke


Schedule

Schedule

preliminary design study May 2001

completion of CDR beginning 2004

approval of project in 2004

final design of components and ordering of hardware in 2005/2006

rebuilding of PETRA in 2007

start of operation in 2008

DESY Stefan Wilke


Good morning

New octant and new experimental

Hall

TTF

DORIS

289 m

LINAC

DESY

293 m

PETRA

2304 m

RF-Halls

Future

experiments

HERA

6336 m

DESY Stefan Wilke


Machine parameter of petra iii

Machine Parameter of PETRA III

Beam Energy:E0 = 6 GeV

Energyloss per Turn:U0 = 6590 keV

Beam Current (e+): I0 = 100 mA (later 200 mA)

Beam Charge:769 nC (1537 nC)

Harmonic Number:h = 3840

Revolution Frequency:fr = 0.130122 MHz

Momentum Compaction Factor:α = 1.221* 10-3

Emittanceε = 1 nmrad !

Damping Time (longitudinal)τ = 6.92 ms

Undulators13 – 15

DESY Stefan Wilke


Rf system of petra iii

RF – System of PETRA III

Frequency:fRF = 499.66 MHz

Synchrotron Frequency:fs = 6.31 kHz

Circumferencial Voltage:Uc = 20 MV

Shunt-Impedance of

one 7-cell cavity:Rs = 23 MΩ

Beam Power:Pbeam = 659 kW (1318 kW)

+ HOM-losses

DESY Stefan Wilke


Existing rf system of petra

Existing RF-System of PETRA

2 * 8 7-cell cavities, normalconductive

DESY Stefan Wilke


Scenarios

scenarios

max. 150 kW per coupler

superconductive

single-cell cavities

IOTs

DESY Stefan Wilke


Conclusion

Conclusion

  • IOTs?

DESY Stefan Wilke


Thank you questions

Thank You!Questions?

DESY Stefan Wilke


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