particle dynamics in the penningmalmberg- surkotrap with...

$: Particle Dynamics in the PenningMalmberg- SurkoTrap with ...accelconf.web.cern.ch/AccelConf/rupac2016/talks/wecamh02_talk.pdf · 0 1020 3040 5060 7080 W k _ d N 1 2 3 ... A Z \ b$
Particle Dynamics in the PenningMalmberg-Surko Trap with Rotating Electric Field

M. Eseev1,2, I. Meshkov 2,3

1Joint Institute for Nuclear Research, Dubna2Northern Arctic Federal University, Arkhangelsk

3Saint Petersburg State University, Saint Petersburg

RuPAC’16, November 23, 2016 , M. Eseev, I. Meshkov

3

Traps for storage of charged particles and antiparticles


4

,H pHe2,Ps Ps

Ps

e

Traps for storage of charged particles and antiparticles


5

e+

90

60

30

I IIIII IV V VI VII VIII

100 024.1

32.940.544.8

0

B

eU(z)

PMS Trap and “Rotating Wall” Technique


6

e+

90

60

30


100 024.1

32.940.544.8

0

B

eU(z)



7

e+

90

60

30


100 024.1

32.940.544.8

0

B

eU(z)



8

1800

00

900

2700

Phase shifter

B

-V(x)

( )

(b)

(c)

RF generator

L

R

•

•

•

•



9

1800

00

900

2700

Phase shifter

B

-V(x)

( )

(b)

(c)

RF generator

L

R

•

•

•

•RW



Helical quadrupole

22Na10E6 e+ per sec


Helical quadrupole

22Na10E6 e+ per sec


Fundamental Researches

kicker

Helical quadrupole

22Na10E6 e+ per sec



kicker

Helical quadrupole

Ps detector

22Na10E6 e+ per sec



kicker

Helical quadrupole

Ps detector

22Na10E6 e+ per sec


Fundamental Researches Applied Researches (PAS)


Trap & Injector

0,00E+00

1,00E+07

2,00E+07

3,00E+07

4,00E+07

5,00E+07

6,00E+07

7,00E+07

8,00E+07

9,00E+07

0 10 20 30 40 50 60 70 80

N

1 2 3

Stored electron number vs time


Research of Storage and Lifetime of The Particle Bunch in The Trap, E

0,00E+00

1,00E+07

2,00E+07

3,00E+07

4,00E+07

5,00E+07

6,00E+07

7,00E+07

8,00E+07

9,00E+07

0 10 20 30 40 50 60 70 80

N

1 2 3


Pressure and potential distributions are optimized



0,00E+00

1,00E+07

2,00E+07

3,00E+07

4,00E+07

5,00E+07

6,00E+07

7,00E+07

8,00E+07

9,00E+07

0 10 20 30 40 50 60 70 80

N

1 2 3


Same + transverse correction field is optimizedPressure and potential distributions are optimized



0,00E+00

1,00E+07

2,00E+07

3,00E+07

4,00E+07

5,00E+07

6,00E+07

7,00E+07

8,00E+07

9,00E+07

0 10 20 30 40 50 60 70 80

N

1 2 3


Same + transverse correction field is optimizedSame + rotating field is ON and optimized




0,00E+00

1,00E+07

2,00E+07

3,00E+07

4,00E+07

5,00E+07

6,00E+07

7,00E+07

8,00E+07

9,00E+07

0 10 20 30 40 50 60 70 80

N

1 2 3


Same + transverse correction field is optimizedSame + rotating field is ON and optimized


Optimal frotating = 600 kHz,

Amplitude = 1 V,

= 0.4, life = 80 s



RW off,on B=1300G,ton off=80s

0.00E+00

2.00E+07

4.00E+07

6.00E+07

8.00E+07

0 50 100 150 200 250

t,s

N

RWoff-RWon RWon-RWoff RW on



0.00E+00

2.00E+07

4.00E+07

6.00E+07

8.00E+07

0 50 100 150 200 250

t,s

N


RW on



0.00E+00

2.00E+07

4.00E+07

6.00E+07

8.00E+07

0 50 100 150 200 250

t,s

N


RW on RW off after 80 sec



0.00E+00

2.00E+07

4.00E+07

6.00E+07

8.00E+07

0 50 100 150 200 250

t,s

N


RW on RW off after 80 sec RW on after 80 sec


50

Injection & storage, RW on (30 s)Injection offConfinement, RW offExtraction (CCD)

Measurements of The Transverse Size and The Bunch Dynamics at Accumulation


51


Injection & storage, RW off (30 s)Injection off Confinement RW onExtraction (CCD)



52





53





54

2

2

2

2

22

2

cos

sin

x RW RW

y RW RW

z i i

d x Bm ey e E E t kxdt cd y B

m ex e E E t kydt c

d zm z kzdt

em e k

cv E

R trap RWE E E E

24 /p ne m tpap, trap,trap r zE E E

/c eB mc

2 / 2R pm eE r

20 /z eU md

/K k m

,iyx ,e tiRWc

RW

meE


55RuPAC’16, November 23, 2016 , M. Eseev, I. Meshkov

•

•

•

•

•

56

2II

RW ztrap

f l fL

fRW fRW

72L cm

1,2,...l


57RuPAC’16, November 23, 2016 , M. Eseev, I. Meshkov

58

Resonances


59

Resonances


60

Resonances


61

Resonances

Antiresonances


62

Resonances

Antiresonances



tN

ttNeNtN t

trap ,,,

1

65

.,sinsinIm

,coscos

0

0

BE

cvt

vytty

tv

xtxRW

d

RWRW

d

RWRW

d

.sincos22

0

2

0RW

d

RW

d

RW

d vvyy

vxx

RW

RW

RW

dRW B

cEv


66

bounceRWRW T

,)(0

RWRW

T

magne

bounce

dtt

.2)(

0

RWbounce

T

magn

resRW T

ndttbounce

2RW magnres

necB



Ey(x)

-1,5

-1

-0,5

0

0,5

1

1,5

-80 -60 -40 -20 0 20 40 60 80

x, mm

Ey,

kV

/cm

y = 5 mm

y= 8 mm

y= 0 mm

y = -5 mm

y = -8 mm

•

•

•

•

•

•


Thank you for attention!

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