19.1.2006, GSI DarmstadtDavid Boutin, JLU Giessen

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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)
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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

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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 Br range 18 100 Tm
• gt different phase space
• Possibility to use other quadrupole designs
  (SIS100, FRS, Super-FRS)

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Single magnets design

• Four identical magnets
• Compact system
• Design similar to SIS100 magnets

x / 28 cm
Br 100 Tm
y / 28 cm
16.9 m
x / 28 cm
Br 27 Tm
y / 28 cm
Results for Br 100 Tm
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Split magnets design

• Each magnet is split into 2 or 3
• More flexible
• Super-FRS magnets (Q2, Q3) can be used

x / 40 cm
Br 100 Tm
y / 40 cm
24.8 m
x / 40 cm
Br 27 Tm
y / 40 cm
Results for Br 100 Tm
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1st order ion-optical design of a large
acceptance energy buncher
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Conclusion

• Personal spent JLU Giessen 19 MM out of 102
• UoS Surrey 10 MM out of 24
• GSI 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

• In time with Implementation plan of Task 9 -
  NUSTAR 4