# Presentation: 254793

##  Introduction of SNSExtraction Kicker Power Supply

- Jianlin Mi
- June 21, 2001

- Introduction of SNS Extraction Kicker Power Supply

- 6/21/2001,  Jianlin Mi

## Design Description

**There are ****14 ****kicker pulse power supplies driving**** 14 ****magnets located at a long straight section (section D)**
**The Kicker Power Supply will be operated at a ****60 Hz**** repetition.**
**The kicker modulator provides a fast pulse current to kick the beam out of the ring in a ****250 nS**** beam gap.**
**A  ****750nS**** pulse flat top period is required.**

- Introduction of SNS Extraction Kicker Power Supply

- 6/21/2001,  Jianlin Mi

## Kicker Power Supply Design Parameter

- Kicker  14
- kicker inductance
- magnet current
-  High voltage
- pulse rise time
- pulse width
- Pulse repetition

- Introduction of SNS Extraction Kicker Power Supply

- 6/21/2001,  Jianlin Mi

## EXTRACTION SYSTEM LAYOUT DIAGRAM

- Introduction of SNS Extraction Kicker Power Supply

- 6/21/2001,  Jianlin Mi

## Kicker Power Supply Diagram

- Introduction of SNS Extraction Kicker Power Supply

- 6/21/2001,  Jianlin Mi

## Kicker PFN Simulation Circuit

- Introduction of SNS Extraction Kicker Power Supply

- 6/21/2001,  Jianlin Mi

## Kicker PFN Simulation Current  Waveform

- Introduction of SNS Extraction Kicker Power Supply

- 6/21/2001,  Jianlin Mi

## Blumlein PFN Tank Design and Parts

**Two PFN in series**
**15 LC sections/PFN**
**Each PFN impedance 6.25 ******
**Silicon liquid as dielectric materiel**

**CX1925 thyratron as the high voltage switch **
**high voltage oil capacitor **
**high power ceramic disc resistor**
**lower impedance**

- Introduction of SNS Extraction Kicker Power Supply

- 6/21/2001,  Jianlin Mi

## EEV Thyratron CX1925

**EEV**
**HV = 80kV**
**Peak current 15 kA**
**repetition 2k Hz**
**Life time ~3 year**

- Introduction of SNS Extraction Kicker Power Supply

- 6/21/2001,  Jianlin Mi

## HIGN VOLTAGE CAPACITOR

- 50 KV/50% reversal V
- Peak current 10kA

- 5nF/1nF
- 10nH inductance

- Introduction of SNS Extraction Kicker Power Supply

- 6/21/2001,  Jianlin Mi

## High Energy Disk Resistors

- HVR Advanced Power  Components
- High Surge Energy 110kJ
- High voltage(28.3kV)
- Low Inductance
- 10 Disk ( 2.5 Ohm) resistors

- Introduction of SNS Extraction Kicker Power Supply

- 6/21/2001,  Jianlin Mi

## Blumlein PFN Tank

- Introduction of SNS Extraction Kicker Power Supply

- 6/21/2001,  Jianlin Mi

## PFN SCHMETIC

- Introduction of SNS Extraction Kicker Power Supply

- 6/21/2001,  Jianlin Mi

## Charging Power Supply Cabinet

- Pulse capacitor charging power supply
- Thyratron filament and reservoir power supply
- Thyratron grid and bias
- Trigger generator control unit
- Status control
- Control interface

- Introduction of SNS Extraction Kicker Power Supply

- 6/21/2001,  Jianlin Mi

## Charging Power Supply Cabinet( continue)

- 50 kV Capacitor Charging P.S. (ALE802)
- Thyratron Bias and Prime
- Filament and Reservoir Driver
- PS Control Box
- Control Interface
- Trigger Generator

- Introduction of SNS Extraction Kicker Power Supply

- 6/21/2001,  Jianlin Mi

## HV Charging Power Supply

- 50 kV, 8kW
- Charging Rate 8kJ/sec
- Charging Load Capacitance 90 nF
- Charging Time        13 mS( 35kV)
- Repetition 60 Hz

- Introduction of SNS Extraction Kicker Power Supply

- 6/21/2001,  Jianlin Mi

## Trigger Generator

- Introduction of SNS Extraction Kicker Power Supply

- 6/21/2001,  Jianlin Mi

## Pulse Delay Generator

- Introduction of SNS Extraction Kicker Power Supply

- 6/21/2001,  Jianlin Mi

## Conclusion

- PFN
- Design Complete
- PFN Tank
- Parts, Cap
- Charging Power Supply
- HV power supply 802
- DG535
- Trigger
- Station driver
- protection

- Introduction of SNS Extraction Kicker Power Supply

- 6/21/2001,  Jianlin Mi