Seventh CW and High Average Power RF Workshop

Session

Session 7

10 May 2012, 13:30

Danfords Hotel & Marina

Conveners

Session 7

• Richard Nelson (Jefferson Lab)
• Yoon Kang (Oak Ridge National Laboratory)

27. Short Circuit Energy

Andre Spichiger (T)

10/05/2012, 13:30

Oral

Short circuit energy considerations using the example of a pulse step modulator based HVPS.

5. Performance and Upgrades of the Advanced Photon Source (APS) 352MHz / 1-MW Klystron Power Systems*

Gian Trento (A)

10/05/2012, 14:00

Oral

Essential for operation of the APS booster and storage ring are the high power radio frequency (rf) systems. The high-power rf system consists of five individual 100-kV, 20-A DC power systems each feeding its respective 1-MW continuous wave klystron. Each power system contains a medium voltage electrical substation, a 1400-V SCR gated voltage regulator, a 100-kV rectifier, an ignitron crowbar...

24. High Voltage Power Supply for the ALS Storage Ring RF system-Disconnect Switch status.

Mr Slawomir Kwiatkowski (LBNL)

10/05/2012, 14:30

Oral

The new ALS Main Ring 500MHz RF system will require significant modification of the existing HV power supply in which classical ignitron based crow-bar system will be replaced with house made solid state disconnect switch which is undergoing final high power test. The principle of the operation and the status of the testing will be presented.

9. New HOM damped cavities at the ESRF

Dr Jorn Jacob (ESRF)

10/05/2012, 15:00

Oral

New HOM damped cavities have been developed at the ESRF on the basis of the BESSY/ALBA cavity. Three prototypes have been built by three companies RI, SDMS and CINEL following different manufacturing procedures. The first one is under test on the storage ring, the second one is ready for tests to be started next summer and the last one is to be delivered in the coming weeks. Design features,...

19. RF fundamental power coupler news

Eric Montesinos (CERN)

10/05/2012, 16:00

Oral

Recent fundamental power coupler designs and tests for various projects such as SPL, Linac4, ESRF, SOLEIL, APS, HIE-Isolde.

13. Design, simulations and conditioning of 500kW CW FPCs for the ERL SRF gun at BNL

Dr Wencan Xu (Brookhaven National Lab)

10/05/2012, 16:30

Oral

BNL 704MHz SRF gun for ERL uses two high power fundamental power couplers (FPCs) to deliever 1MW CW RF power to gun cavity. Prior to install the FPCs to the cavity, we used the 1MW klystron to condition the two couplers. This paper will address design of the high power couplers, conditioning test of the FPCs. Multipacting simulation using Track3P and comparison with conditioning will be...

7. Status of the Advanced Photon Source (APS) 352-MHz Radio Frequency Test Stand (RFTS)*

Gian Trento (Argonne National Laboratory)

10/05/2012, 17:00

Oral

The APS 352MHz radio frequency test stand (RFTS) was constructed in 2002 primarily to test and condition storage ring and booster rf cavity components. Since the rf test stand’s inception, modifications have been made to increase the RFTS’s testing capabilities. These modifications include: the installation of a solid state switch / mod-anode regulator, a high-voltage switch tank, access to...

22. The cavity for RF input coupler conditioning at SPring-8

Dr Shigeki Sasaki (SPring-8/JASRI)

10/05/2012, 17:30

Oral

We have developed a cavity specifically used for the coupler conditioning. For the booster synchrotron, 5-cell cavities are used and maximum 300-kW RF power must be fed through the couplers, whereas for the storage ring single cell cavities are used and the power fed through the coupler is 150 kW at maximum. Each coupler should be conditioned before the installation to the actual machine. We...