19.1.2006, gsi darmstadtdavid boutin, jlu giessen diracsecondary beams report on ion-optical design...
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19.1.2006, GSI Darmstadt David Boutin, JLU Giessen
DIRACsecondary Beams
Report on
Ion-optical design studies and application
Task 9 – NUSTAR 4
Participants: JLU, Giessen (leading)
UoS, Surrey
GSI, Darmstadt
Task leader: Wolfgang Plaß (JLU)
19.1.2006, GSI Darmstadt David Boutin, JLU Giessen
Main activities and results of NUSTAR 4 in 2005
1st order ion-optical design of a strong focusing system for the Super-FRS target
1st order ion-optical design of a large acceptance energy buncher
19.1.2006, GSI Darmstadt David Boutin, JLU Giessen
Strong focusing system consisting of superferric
quadrupole magnets (I)
Main options: single magnets or split magnets
Final spot size in front of Super-FRS target (1 2) mm2
Studied Brange: 18 – 100 Tm=> different phase space
Possibility to use other quadrupole designs (SIS100, FRS, Super-FRS)
19.1.2006, GSI Darmstadt David Boutin, JLU Giessen
Single magnets design
16.9 m
L [m] G0 [m] B [T] Gr [T/m]
Q1 2.2 0.12 -1.60 13.3
Q2 2.2 0.12 1.96 16.3
Q3 2.2 0.12 -3.14 26.2
Q4 2.2 0.12 3.00 25.0Results for B = 100 Tm
x /
28
cm
y /
28
cm
Four identical magnets
Compact system
Design similar to SIS100 magnets
B = 100 Tm
x /
28
cm
y /
28
cm
B = 27 Tm
19.1.2006, GSI Darmstadt David Boutin, JLU Giessen
Split magnets designx
/ 4
0 c
my
/ 4
0 c
mx
/ 4
0 c
my
/ 4
0 c
m
B = 100 Tm
24.8 m
Quan. L [m] G0 [m] B [T] Gr[T/m]
Q1 2 0.75 0.08 -1.36 13.3
Q2 2 1.2 0.19 1.71 16.3
Q3 3 1.2 0.19 -1.73 26.2
Q4 3 0.75 0.08 1.55 25.0
Each magnet is split into 2 or 3
More flexible
Super-FRS magnets (Q2, Q3) can be used
Results for B = 100 Tm
B = 27 Tm
19.1.2006, GSI Darmstadt David Boutin, JLU Giessen
1st order ion-optical design of a large acceptance
energy buncher
Magnetic elements of the Energy Buncher
2G0 / [mm] Bmax / [T]
(warm bore) (warm bore)
j0=90o
0=6.25 m
-Type 8 3 800 / 1200 ±190 1.2
-Type 9 4 800 ±300 6.0
H-Pole -magnet Requires an ion-optical design in 2nd order (next step)
Q-Pole
Ene
rgy
Bun
cher
Element
Dipole 1.6±1001
l / [mm]Quant.
19.1.2006, GSI Darmstadt David Boutin, JLU Giessen
Conclusion
In time with Implementation plan of Task 9 - NUSTAR 4
•Personal spent: JLU Giessen: 19 MM out of 102UoS Surrey: 10 MM out of 24GSI Darmstadt: 2 MM out of 6
•Capital investment: JLU Giessen: 0 k€ out of 17 UoS Surrey: no contribution, no request GSI Darmstadt: no contribution, no request
•2 coordination meetings