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MICE RF System. Power Supplies, Control and Monitoring Status report December 2011 Chris White, STFC Daresbury Laboratory. TH116. 140 uF. 29 uF. 20 kV PSU to ISIS design. 20 kV Power Supply for 4616. HV Power Supply 20 kV. 4616 Circuit Enclosure. Auxiliary Rack.

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Mice rf system

MICE RF System

Power Supplies, Control and Monitoring

Status report

December 2011

Chris White, STFC Daresbury Laboratory



Mice rf system

TH116

140 uF

29 uF

20 kV PSU to ISIS design

MICE RF Design Review December 2011


20 kv power supply for 4616
20 kV Power Supply for 4616

HV Power Supply 20 kV

4616 Circuit

Enclosure

Auxiliary Rack

RF Signal Generator

(201 MHz)

Control Crate

Resistor bank

RF cable

RF output (co-ax)

4616 Tube

PLC Crate

Capacitor Charger

20 kV+

Screen cable

Heater Controller

Grid cable

Water cooling

circuits (4)

RF solid state amplifier

Earth Switch

Compressed air

cooling

Crowbar (Ignitron)

Grid PSU

(300 Vdc)

HV cable

Dump Relay

Screen Pulser

(2000 Vdc)

0.95V

500A

Capacitor

29 uF

Screen PSU (600 Vdc)

Heater Transformer

MICE RF Design Review December 2011


38 kv power supply for th116
38 kV Power Supply for TH116

HV Power Supply 38 kV

TH116 Circuit

Enclosure

Auxiliary Rack

Control Crate

HV cable

TH116 Tube

Resistor bank

RF output (co-ax)

PLC Crate

RF input from

4616 (co-ax)

Capacitor Charger

40 kV+

Heater Controller

Water cooling circuit

Trigger pulse

Cathode Modulator

450V DC Bias PSU

Earth Switch

Compressed air

cooling

Crowbar (Thyratron)

Dump Relay

20V

500A

Cooling Fans

Capacitor

140 uF

Heater Transformer

MICE RF Design Review December 2011


Daresbury laboratory plant room 1 rf test area
Daresbury Laboratory - Plant Room 1 - RF Test Area

MICE RF Design Review December 2011


Cooling water systems dl
Cooling Water Systems (DL)

  • DL site cooling system decommissioned

  • Ex-SRS twin-circuit chiller installed

    • Demin for amplifiers

    • Glycol for load

  • Now fully operational

MICE RF Design Review December 2011


Th116 circuit 1
TH116 Circuit #1

  • Mechanically complete

  • New fans fitted

  • Cathode modulator built

  • Motorised tuners

  • Electrical control panel

  • Heater controller

  • Safety interlocks

  • Tested to 1 MW RF output

MICE RF Design Review December 2011


Cathode modulator

38 kV

TH116

TH116 CATHODE MODULATOR CIRCUIT

From 4616

2R7

33R

IGBT

450Vdc

15k

Trigger

Cathode Modulator

  • IGBT switch

  • IGBT control board

  • Potential divider

  • Zener diode array

  • Fully operational

  • Second unit almost complete

MICE RF Design Review December 2011


Circuit tuning motors
Circuit tuning motors

MICE RF Design Review December 2011


Th116 electrical control panel
TH116 Electrical Control Panel

  • Fan control-gear

  • Heater controller (thyristor)

  • Circuit-breakers

  • Tuning control relays

MICE RF Design Review December 2011


Th116 38kv power supply
TH116 38kV Power Supply

  • 2 x 70 μF Capacitors

  • Crowbar (thyratron)

  • Control unit

  • Power module

  • Dump relay

  • Earth switch

  • Charger (40 kV)

  • Resistors

Crowbar testing

Crowbar (Thyratron)

HV Resistors

HV Capacitors (140 uF)

Power Supply Rack (Front)

MICE RF Design Review December 2011


Rf hv power supplies components
RF HV Power Supplies - Components Crowbar (38 kV Thyratron) TH116 Circuit (lower part) 38 kV PSU – rear view 20 kV PSU & Aux. rack – front view 38 kV PSU – resistor bank HV PSU Control Unit 38 kV PSU – 1 MW RF output

MICE RF Design Review December 2011


Rf control monitoring system
RF Control & Monitoring System

EPICS Server

4616 & TH116

Aux. Racks

Network/ Controls Rack

VME Crate

Canbus modules

DAC/ADC modules

Typical I/L

Digital signals/serial link

PLC Crate (TH116)

Interlocks

Compressed air pressure

Digital signals/serial link

PLC Crate (4616)

Interlocks

Water flow

Panel switches

Enable

Analog signals

Grid PSU (4616)

Enable

Analog signals

Screen PSU (4616)

Enable

Heater Controller (4616)

Analog & digital signals

Heater V and I

Enable

Heater Controller (TH116)

Analog & digital signals

Heater V and I

Enable

Analog & digital signals

450V DC Bias PSU

Interlocks

MICE RF Design Review December 2011


Rf power supplies mice hall layout
RF Power Supplies - MICE Hall Layout

RF Amplifiers

Layout of North Mezzanine

RF Power Supply Racks

Air Conditioning Units

RF Network/Control Racks

MICE RF Design Review December 2011


Timescale
Timescale

Current work in progress:

  • RF testing of System #1 with new 4616 and TH116 tubes Nov 11 to Dec11

    Future work (Step V): time-scales to be confirmed

  • Assembly of CERN TH116 amplifier (System #2) ---------------------- (July 2012)

  • Test CERN amplifier at Daresbury ----------------------------------------- (December 2012)

  • Develop RF Control Systems

  • Pack & ship complete system #1 to RAL --------------------------------- (January 2013)

  • Install RF System #1 in MICE Hall ----------------------------------------- (May 2013)

  • Test complete RF system #1 at RAL -------------------------------------- (September 2013)

  • Construct & test 4616 #2 amplifier, power supply & controls

  • Construct & test TH116 #2 power supply & controls

  • Test complete RF system #2 at DL

  • Pack & ship system #2 to RAL

  • Install RF System #2 in MICE Hall

  • Test complete RF system #2 at RAL

    Tasks in red are required for TIARA (deadline in brackets)

MICE RF Design Review December 2011


Power supplies construction status step v
Power Supplies – Construction Status - Step V

RF System #1 built and under test (manually controlled)

Work required:

  • Control & monitoring upgrade for 4616 Screen Pulser (2 kV)

  • Interface to MICE control system

    • Interface to PLC (Siemens S7-200)

    • Interface to Heater Controller (Eurotherm)

  • Interface to Low Level RF and Timing System

    RF System #2:

  • 4616 amplifer circuit refurbishment has started

  • 20 kV Power Supply rack to be built (some components available, some ordered)

  • 4616 Auxiliary rack to be built (components to be ordered)

  • CERN amplifier at DL – to be assembled when required

  • Cathode modulator virtually complete

  • 38 kV Power Supply rack to be built (components to be ordered)

  • TH116 Auxiliary rack to be built (components to be ordered)

  • Second dummy load to be procured for use with CERN amplifier (twin output)

4616 Tube & Connections

MICE RF Design Review December 2011


Power supplies construction status step vi
Power Supplies – Construction Status - Step VI

RF Systems #3 and #4:

  • TH116 amplifier circuit (ex-LBNL):

    • Mechanical refurbishment complete, tuning motors fitted

    • Electrical control panel to be built

  • Second CERN amplifier at DL – to be assembled when required

  • Cathode modulators to be built

  • 4616 amplifer circuit (ex-LBNL) refurbishment has started

  • Fourth 4616 amplifier circuit to be purchased

  • 20 kV Power Supply racks to be built (some components available, some ordered)

  • 4616 Auxiliary racks to be built (components to be ordered)

  • CERN amplifier at DL – to be assembled when required

  • 38 kV Power Supply racks to be built (components to be ordered)

  • TH116 Auxiliary racks to be built (components to be ordered)

20 kV PSU and Aux. Rack

MICE RF Design Review December 2011


Rf power supplies
RF Power Supplies

Questions ?

20 kV PSU (front)

38 kV PSU – Charger (rear)

38 kV PSU Dump Relay & Voltage divider

38 kV PSU - rear view

MICE RF Design Review December 2011