GSIJINRBNL

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GSI/JINR/BNL 2005 - 2009
NICA (2006)
critRHIC (2009)
International co-operation Round Table
Discussions I, II, III JINR, Dubna, 2005,
2006, 2008 http//theor.jinr.ru/meetings/2008/rou
ndtable/
International co-operation Round Table IV
September 9 12, 2009, JINR, Dubna
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Collider C 251 m
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1. NICA scheme layout (Contnd)
MPD
SPD
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2. Heavy ions in NICA
2.1. Operation regime and parameters
Injector 2109 ions/pulse of 197Au32 at energy
of 6.2 MeV/u
Booster (25 Tm) 1(2-3) single-turn injection,
storage of 2 (4-6)109, acceleration up to 100
MeV/u, electron cooling, acceleration up to 600
MeV/u
Collider (45 Tm) Storage of 17 (20) bunches ?
1?109 ions per ring at 1?4.5 GeV/u, electron
and/or stochastic cooling
Stripping (80) 197Au32 ? 197Au79
2?17 (20) injection cycles
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34 injection cycles to Collider rings of 1?109
ions 197Au79 per cycle 1.7?1010 ions/ring
electron cooling
Extraction, stripping to 197Au79
1 (2-3) injection cycles, electron cooling (?)
bunch compression, extraction
injection
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2. Heavy ions in NICA (Contnd)
I.Meshkov, O.Kozlov, V.Mikhailov, A.Sidorin,
A.Smirnov, N.Topilin
2.2. Collider
E_cooler
MPD
S_Cool PU x, y, long
Upper ring
Injection channels
Long. kicker
SPD
RF
Beam dump
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• 2) Injection and storage with barrier bucket
  technique and cooling of a coasting (!) beam, 20
  bunches,
• bunch number is limited by interbunch space in IP
  straight section,
• bunch compression in Nuclotron is NOT required
  (!)
• Electron and/or stochastic cooling for storage
  and luminosity preservation, bunch formation
  after storage are required.

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2. Heavy ions in NICA (Contnd)
2.2. Collider (Contnd)
Barrier Bucket Method
Ion storage with barrier bucket (BB)
method Periodic voltage pulses applied to a low
quality cavity (meander) when stochastic or
electron cooling is ON.
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Cooling is ON
Stack
The method was tested experimentally at ESR (GSI)
with electron cooling (2008).
NICA Trevolution 0.85 ? 0.96 ?s, VBB ? 16 kV
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Conclusion Electron magnetization is much more
preferable
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Upper ring
SPD
Siberian snake Protons, 1 ? E ? 12 GeV ?
(BL)solenoid ? 50 Tm Deuterons, 1 ? E ?
5 GeV/u ? (BL)solenoid ? 140 Tm
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Protons, 1 ? E ? 12 GeV ? (BL)dipole ? 3
Tm Deuterons, 1 ? E ? 5 GeV/u ? (BL)dipole ?
5.8 Tm
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??x
??y
??x
-??y
-2??x
?QS ??x??y/2? per 1 turn
Protons, 12 GeV, ?t 100 ?s BxLx 0.18 Tm,
ByLy 4.7 Tm
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To be commissioned in 2013.
To be commissioned in 2013.
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4. NICA project status and plans
A.Butenko V.Mikhailov G.Khodjibagiyan N.Topilin
4.2. Booster
Igor B. Issinsky
Nuclotron-type SC magnets for Booster
Superconducting Booster in the magnet yoke of
The Synchrophasotron
Nuclotron
Synchrophasotron yoke
Booster

• B? 25 T?m, Bmax 1.8 T
• 3 single-turn injections
• 2) Storage and electron cooling of 8109 197Au32
• 3) Acceleration up to 440 MeV/u
• 4) Extraction stripping

Dismounting is in progress presently
To be commissioned in 2013.
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See session 6, A.V.Eliseev Boster-Nuclotron
chain
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Booster FODO lattice
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Ring equipment
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Injection extraction
Injection scheme
Extraction scheme
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SC magnet technology
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See the next talk, G.V.Trubnikov Nuclotron-M
To be commissioned in 2013.
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To be commissioned in 2014.
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To be commissioned in 2014.

• Under development in collaboration with
• All-Russian Institute for
• Electrotechnique (Moscow)
• FZ Juelich
• Budker INP

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The ambush regiment
Collider C_Ring 380 ? Dipoles 2 ??
25 m
Luminosity?
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4. NICA project status and plans
4.5. NICA Collaboration
All-Russian Institute for Electrotechnique HV
Electron cooler
ITEP Beam dynamics in the collider
Corporation Powder Metallurgy (Minsk,
Belorussia) Technology of TiN coating of vacuum
chamber walls for reduction of secondary emission
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