2nd workshop on SuperB

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2nd Workshop on SuperBFRASCATI 16- 18 March 2006
Closeout Remarks

• Marcello A. GiorgiUniversità di Pisa and INFN
  Pisa

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OUTLINE
From my opening talk

• More on physics case at Super Flavour Factory
• Status of the art
• Goals of the workshop

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From Physics presentation
M.Ciuchini
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Olympic medals
M.Ciuchini
Beam Polarization
Run at 4.0 GeV
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ON THE MACHINE

• Pantaleo has presented the results of simulations
  on various possible designs.
• John has presented a solution possibly making use
  of he present PEPII setup and components
  (including the tunnel)

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Machine design under discussion

• USE of ILC DR ILC FF Requires virtually no RD
• Uses all the work done for ILC
• Ring and ff layouts virtually done, 3km
  circunference rings
• 100 Synergy with ILC
• IR extremely simplified 80-100 m straight line
• Beam stay clear about 30sigmas with 1cm radius
  beam pipe
• Currents around 1.5Amps
• Background better than PEP and KEKB
• Possibly to operate at the tau with L1035
• Polarization of one beam considered
• UNDER STUDY the possibility to run down to the
  phi with lumilt1034
• Total cost about half of the ILC e DRs (2 e 6km
  rings in ILC)
• Power around 40MW, still to be further optimized
  (goal 25MW)
• Possible to reuse PEP RF system, power supplies,
  Vacuum pumps, etc., further reducing the overall
  cost
• Needs the standard injector system, probably a
  C-band 7GeV linac like in KEKB upgrade (already
  designed)

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Simplified layout in the Small Disruption Regime
Collisions every Turn Uncompressed
bunches Crossing angle 225 mrad Crabbed Y-Waist
ILC ring ILC FF
FF
FF
IP
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• John Seeman idea
• 4400m collider (2 rings in the 2200m tunnel of
  PEPII)

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Raimondi Feb 2006
ILC ring with ILC FF ILC Compressor Colliding
every turn crossing angle optional
C 6000 m
Decompressor
Decompressor
FF
FF
IP
Compressor
Compressor
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Layout of One Ring Other Ring is the Reverse!
Linac injector

Bunch compressor
Bunch expander
Damping ring 2200 m
Final Focus
Reverse Final Focus
IP And Detector
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Super-B-Factory in a 4400 m Tunnel 0.4 mm

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2 most popular solutions

• John and Pantaleo designs seems so far the
  closest to a possible baseline choice.
• We need from now and next workshop a lot and well
  coordinated work to arrive to a satisfactory
  decision before the summer.

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• First meeting of the steering Committee
  Yesterday, we will meet again tomorrow morning at
  9.0
• Next workshop on june 14,15,16 (To be confirmed)
  at SLAC.
• Decision on the baseline design for the machine.
• Start writing the first conceptual document.

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Toward the CDR

• A final workshop is needed in October (beginning
  of) to be able to write a reasonable CDR before
  the end of the current year.
• A theory workshop will be held contiguous to ours
  and devoted to the preparation of the physics
  chapter of the CDR