KALI Presentation

7/28/2019 KALI Presentation

1/26

High Power Pulsed Elec

AcceleratorsDevelopment for Indus

Applications

Dr. Archana Sharma

Email : [email protected]

Government of India

BHABHA ATOMIC RESEARCH CENTR

Beam Technology Development Grou

Accelerator & Pulse Power Division

Mumbai-400085- INDIA


2/26

Expertise of BARC in Pulsed Accelerators

PRESENT STATUS OF KALI-5000 SYSTEM

(0.8-1 MV, 80 kA, 60 ns) 1.5 MV, 25kJ MARX GENERATOR 1MV, 5kJ, 100ns CASTOR OIL BLU 1 MV SF6 SPARKGAP SWITCH

GENERATION OF INTENSE RELATIVISTIELECTRON BEAMS (REB)

UTILIZATION OF REB for Flash X-Rays,HPM & Neutrons.

Topics Covered


3/26

BARCs EXPERTISE

Since 1970s,Pulse Power Systems have beenIndigenously Developed by APPD, BARC

*KALI-75, 375kV, 2kA, 180ns;*KALI-85, 780kV, 4kA, 60ns;*KALI-200, 300kV, 15kA, 60ns;*KALI-1000, 300kV, 20kA, 100ns,*KALI-5000, tested up to 600kV, 40 GW, 100ns,

LIA-200, 200kV, 5kA, 100ns, 10-100Hz under commissioni

To make the system compact and repetitive,Consistent efforts are being made.

1

10

100

1000

10000

1970- 1980-

* KALI: Kilo- Ampere Line


4/26

Schematic of KALI-5000

Pulsed Accelerator

1MeV electron beam puls


5/26

Photograph of the

KALI-5000 PULSED Accelerato

(0.8-1MV, 80kA, 100ns, 5kJ)


6/26

KALI-5000 SYSTEM (0.8-1MV, 40kA, 1

Vacuum

System

Diode end

Blumlein

SF6gas


7/26

Principle of Marx Generato

R

(b) EQUIVALEN T C IRCU IT

NCo

LR

CHA

RGING

PO

WER

SU

PPLY

L S

S

TRIG

B

R B 1

1

1

SC 1

C

(c ) OUTPUT PU

R L

Vo

B 3

S

B

B 2

2

R

S2

S

C 2

SC

B 3

C

3

3

C S

RCV

R A 1 A 1 A 3A 2 A 2 R A3

(a ) SCH EM ATIC CIRCU IT OF MA RX GEN ERATO R


8/26

Operation of Marx Genera

S S

CC

R

R

RR

S

CC

2

G13

25

A13 A14A

GR

5C

G3

B13

6

B

3

R

4

B3

2

B2

G2

R

R

3C

G1

RA2

R

a

1C

RR

+50kV

HVDCCHARGING

POWER

SUPPLY

CH+

A) WHILECHARGING:

2

TRIG.S1

B1R

TRIG.

R-50kV CH-

GND

A3

R

MODULE-1


9/26

Operation of Marx Genera

S

B) WHILE DISCHARGING :

V-PROBE

10

LR

1 2

S 4 S 5

11C10C9C8C7C

5C4C3C2C1C

S

C 25 C 26 C 27 C 28 C 2

14S13S

FIRST MODULE

SECOND MODU

FIFTH MODUL


10/26

Assembly of Marx Modul

SPARK GAP

PERSPEX SHEET

PLASTIC

CAPACITORS0.7mF, 50kV

PERSPEXCLAMP

SUPPORTFOR MOD

CHARES

MAR X G ENERATOR FOR KALI-500

NYLON ROD


11/26

PHOTOGRAPH OF THEFIRST MARX MODULE

(END VIEW)


12/26

Photograph of the

Assembled Marx Module

1.5MV, 25kJ


13/26

PULSE FORMING LINE

(PFL)

Inner electrode

cV cR

Outer electrodeZo

LOAD

S

V 1

2o=

Dielectric Medium

Vc

THREE ELECTRODE CO-AXIAL BLUMLEIN

LENGTH-L

23R2

E Z

FASTSPARKGAP

OUTERCYLINDER

rr

E Z12

INTERMEDIATECYLINDER

INNERCYLINDER

-1MV

100ns

02312

0L

MATCHED LOADZ = 2 ZWHERE Z = Z =Z

CHARGING

INDUCTOR

V

500ns0

-1MV

From High

Voltage Pulse

Generator

R1

DESIGN EOF PFN

CharacteristZOM = (L /C )

1

Pulse,TOM =

Rise Time, t

Energy, EM =

Output Volta

2-electrode PFN


14/26

End View of The Blumlei

Sparkgap and

Prepulse Inductor


15/26

PULSE Generator

(Marx/Tesla Transformer)

Results of KALI-5000

Scale: 200kV/div,500ns/division

High VoltagePulse Forming Line

Water/oil filled

H.V.Switch

(spark gaps-

N2/SF6 filled)

Marx OutputPeak Voltage =600kV.

Charging time =500ns.

E- Beam curreImax = 71kA a600kV.

FWHM = 100n


16/26

Relativistic Electron Beam

REB Generation

VACUUM

PULSEPOWER

SYSTEM

CATHODESOLINOID

COILS

FOILANODE

INSULATOR ELECTRONBEAM

BEAM TRANSPORT

REGION

CATHODE

DIO

EXPAN

DING

CATHO

DE

PLASM

A


17/26

Virtual Cathode Oscillator

(VIRCATOR)

VIRTUALCATHODE

CATHODE

PULSEPOWERSYSTEM

VACUUM

WINDOW

H

ANODE

VACUUM

HPM weapons offer military commanders the

(i) Speed-of-light, all-weather attack of enemy electron

(ii) Area coverage of multiple targets with minimal prioon threat characteristics(iii) Surgical strike (damage, disrupt, degrade) at selected (iv) Minimum collateral damage in politically sensitive envi(v) Simplified pointing and tracking(vi) Low operating costs

~


18/26

Backward Wave Oscillato

BWO-HPM device

V A C U U M

A N O D E

V

W

P U L S E P O W E RS Y S T E M

C A T H O D E

M A G N E T IC F IE L D

C O I L S

M A G N E T IC F IE L DC O I L S

S L O W W A V E

S LO W W A V E S T R U C T U R E

Efficiency: 20%


19/26

Beam Plasma Device

For HPM generation

ANODE

PLASMACATHODE

PULSE

POWERSYSTEM

VACUUMWINDOW

VACUUM

Wide BW~100GHz,Low Efficiency


20/26

Flash X-Rays

For a successful dynamic radiography,

(i) If higher the velocity of the moving object,

smaller duration of the X-ray flash will be nee(ii) Blurr produced on the stop motion radiog

for an object moving with velocity V &X-ray pulse duration T


21/26

FLASH X-Ray Generation

INSULATOR BODY

CATHODEVACUUM

ANODE

X-RAY FLASH PROFILE

PULSEPOWERSYSTEM

INSULATOR BODY

INPUT PULSECATHODE

X

Y

SECTION AT X -Y

ANODE

APPLICATIONs of FXR:

(i) Radiography of radioactive sources:8Ci Ir-192 source radiographed (KALI-200)

(ii) Imaging the impact of projectile in or on a target,(iii) Imaging an explosively driven object during acceleration(iv) Observing the mechanics of detonation


22/26

Flash X-Ray Generation

Flash X-ray from KALI-75 Normal X- ray Pof water


23/26

VACUUM

ANODE

PULSEPOWER

SYSTEM

CATHODE

VIRTUAL

CATHODE

IONS

e_

CROS

FIELDION SOURSE

Collective IonCollective Ion AcceleraionAcceleraion


24/26

CONCLUSIONSCONCLUSIONS

AN ELECTRON BEAM OF 600kV,

100ns has been produced.HPM ~1GW POWER, for shielding

FLASH X-RAYs for deeper & faster ION IMPLANTATION

for various Industrial Application


25/26

THANKTHANK YOUYOU


26/26

KALI Presentation

Documents

Transcript of KALI Presentation