csr zeuthen jan2004 · martin dohlus double bcjan 2004 double bc proposed setup tracking with...
Post on 31-Jul-2019
217 Views
Preview:
TRANSCRIPT
Martin Dohlus double bc jan 2004
double BC
� proposed setuptracking with ASTRA, ELEGANT and CSRtrack
�BC1 entrance� conversion (200000 →→→→ 8120)�BC1 exit�BC2 entrance� conversion (200000 →→→→ 10100)�BC2 exit� conversion (10100 →→→→ 200000)
Martin Dohlus double bc jan 2004
ASTRA(space charge)
ELEGANT(geom. Wakes, CSR)
CSR-Track
1 2 3 4
1 entrance of BC1 ASTRA/ELEGANT calculation with 200000 particles by Y.Kim2 exit of BC 13 entrance of BC2 ASTRA/ELEGANT calculation with 200000 particles by Y.Kim4 exit of BC2
proposed setup
Martin Dohlus double bc jan 2004
1
0.156
m646
m52
radm1012.1
1
6
=
=
=
⋅⋅= −
γ
.β
.α -
Eεγ
BC1 entrance
Martin Dohlus double bc jan 2004
Martin Dohlus double bc jan 2004
a) longitudinal, equidistant z-mesh, no uncorrelated energy spread !
b) transverse, gaussian, equidistant meshlength / mm
37 particles/slice, 219 slices
conversion (200000 →→→→ 8120)
Martin Dohlus double bc jan 2004
BC1 exit(1.5 m after BC1)
full full
full
Martin Dohlus double bc jan 2004
Martin Dohlus double bc jan 2004
full projected
Martin Dohlus double bc jan 2004
3
0.151
m1940
m252
radm1010.1
1
6
=
=
=
⋅⋅= −
γ
.β
.α -
Eεγ
BC2 entrance
Martin Dohlus double bc jan 2004
Martin Dohlus double bc jan 2004
a) longitudinal, dE-mesh (not equidistant), no uncorrelated energy spread !
b) transverse, gaussian, equidistant mesh101 particles/slice, 100 slices
conversion (200000 →→→→ 10100)
Martin Dohlus double bc jan 2004
BC2 entrance
BC2 exit
∆E = ∆E
equidistant E-mesh
�
distance betweentail slices isincreased
use fine mesh in the tails:
Martin Dohlus double bc jan 2004
BC2 exit(1.5 m after BC2)
full full
full
Martin Dohlus double bc jan 2004
1.5 m after BC2, analysis of “initial” slices
full projected
m50 µ≈
m35 µ≈
Martin Dohlus double bc jan 2004
full projected
(only red particles)
Martin Dohlus double bc jan 2004
conversion (10100 →→→→ 200000)
200000particles
��������
�
�
��������
�
�
z
y
x
p
z
p
y
p
x
200000particles
( )��������
�
�
��������
�
�
−0
0
0
zc
y
pzz
p
y
200000particles
��������
�
�
��������
�
�
z
zc
x
p
pz
p
x
)(
0
0
10100particles
�����
�
�
�����
�
�
z
zc
x
p
pz
p
x
)(
10100particles
�����
�
�
�����
�
�
z
x
p
z
p
x
200000particles
��������
�
�
��������
�
�
0
0
0
z
p
y
y
200000particles
��������
�
�
��������
�
�
z
x
p
z
p
x
0
0
200000particles
��������
�
�
��������
�
�
z
y
x
p
z
p
y
p
x
CSRtrack
transport matrix
verticalz-pz uncorrelated
horizontalz-pz
correlated
Martin Dohlus double bc jan 2004
CSRtrack particles
200000 particleswithout / with “uncorrelated” dE
Martin Dohlus double bc jan 2004
only transport matrixcsr+uncorr.
top related