Stand (RFTS) Gian Trento Accelerator Systems Division Argonne - - PowerPoint PPT Presentation

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Sep 24, 2022 117 likes •282 views

Status of the Advanced Photon Source (APS) 352-MHz Radio Frequency Test Stand (RFTS) Gian Trento Accelerator Systems Division Argonne National Laboratory Abstract: The APS 352MHz radio frequency test stand (RFTS) was constructed in 2002

SLIDE 1

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

Gian Trento Accelerator Systems Division Argonne National Laboratory

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Advanced Photon Source, Argonne National Laboratory 2

Abstract:

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 the klystron garage, and addition of waveguide components to connect a klystron under test to a 1-MW rf load. These recent improvements and the overall performance of the RFTS will be discussed.

SLIDE 3

RFTS Line Diagram

Advanced Photon Source, Argonne National Laboratory 3

SLIDE 4

HV Switch

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Protect personnel
Protect the machine
Speed high voltage transfer

SLIDE 5

Solid State Modulator: Linear Regulator and Open Switch

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Linear Regulator:

> 3kHz frequency response
3.4ms positive step response

5.1 →11.1A

1.6ms negative step response

11.1 → 5.1A

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Solid State Open Switch Short-Circuit Response

Advanced Photon Source, Argonne National Laboratory 6

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RF1 / RF Test Stand Plan View

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SLIDE 8

HV Switch – SS Modulator - Klystron Garage

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RFTS Klystron Garage

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Klystron Acceptance Tests @ 88kV

Date Manufacture Model S/N η (%) A (dB) Pout (kW) 11/15/6 Phillips Valvo Y1315 73201 62.5 40.87 1013 6/16/11 E2V KP3512L 5 64.2 41.12 1003 6/09/11 E2V KP3512L 1 63.7 41.68 959 7/22/11 TED TH2089A 089029 61.7 40.6 880 8/10/11 TED TH2089A 089024 61.24 40.8 873 12/19/11 TED TH2089A 089033 57.55 41 880 1/20/12 TED TH2089A 089054 58.32 41.23 890 1/27/12 TED TH2089A 089055 59.26 43.06 870

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Initial Klystron Under Test Run: 350MW Fault

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2006-Present Unit Under Test Yield

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Component # Tested Failed Booster Coupler 9 2 Storage Ring Coupler 13 4 Booster Tuner 5 Storage Ring Tuner 5 200kW Prototype Coupler 1 1 Coaxial Coupler failures: 6 ceramics & 1 weld

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RFTS Victim

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SLIDE 14

RFTS Conditioning Script

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Eliminate constant supervision
Ensure component safety

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RFTS Operator Console.

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Attenuator Knob Operator’s Support Systems:

Power Monitor
Ion & cold cathode vacuum
Cavity video monitor
Cavity & wgsw plc
Klystron plc
RF interlock
Personnel protection
Etc.

SLIDE 16

Good Evening CWRF2012 Participants.

Advanced Photon Source, Argonne National Laboratory 16