b <1 Cryomodules & Cost Estimates. Giorgio Apollinari March 15 th  17 th , 2005. Outline. Description of the System Elliptical Cavities and CryoModules Spoke Cavities and Cryomodules R&D Steps Conclusions. “. PULSED RIA. ”. Single. Front End. Linac. Modulator. 3 MW. JPARC.
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PULSED RIA
”
Single
Front End
Linac
Modulator
3 MW
JPARC
Multi

Cavity
Fanout
at 10

50 kW/cavity
Klystron
Phase and Amplitude Control w/ Ferrite Tuners
325 MHz
0

110
MeV
H

RFQ
MEBT
RTSR
SSR
DSR
DSR
b<1
“TESLA” LINAC
10 MW
Modulator
Modulator
Modulator
TESLA
Multi

Beam
Elliptical Option
Elliptical Option
Klystrons
1300 MHz
0.1

1.2
GeV
48
Cavites
/ Klystron
2 Klystrons
?
b
=.47
=.47
?
b
=.47
=.47
b
?
=.61
=.61
?
b
=.61
=.61
b
?
=.61
=.61
?
b
=.61
=.61
b
=.81
b
=.81
b
=.81
b
=.81
b
=.81
b
=.81
96 Elliptical Cavities
or
or
…
…
325 MHz Spoke Resonators
325 MHz Spoke Resonators
8
Cavites
/
Cryomodule
12
Cryomodules
Description of the SystemCavity Accelerating Gradient
(Elliptical Cavity Option for Beta=0.47 and 0.61)
Epeak = 52 MV/m, Phi_Synch = 30 to 15 degrees
30
Accelerating
Beta = 1.00
Gradient Eacc
25
Beta = 0.81
Eacc *TTF*Cos(f)
Beta
20
=0.61
Gradient (MeV/m)
Beta
0.47
15
10
5
0
1
51
101
151
201
251
301
351
Elliptical Cavity Number
longitudinal acceptance)
b=0.21
16 Cavities/Cryomodule – 1 Cryomodule
16 focusing Solenoids/Cryomodule
b=0.4
14 Cavities/Cryomodule – 2 Cryomodules
7 focusing Solenoids/Cryomodule
Open Technical Choice
b=0.61
6 Cavities/Cryomodule – 7 Cryomodules
6 focusing quads/Cryomodule
Positive Ion Injector Cryomodule
Clean Assembly suspended from
Top Plate
Clean Room String Assembly
Assembly lowered in vacuum vessel
Elliptical b=0.47, 0.61, 0.81
Elliptical b=0.47, 0.61, 0.81
b=0.47
8 Cavities, 6 cells/cavity
9 focusing quads
Open Technical Choice
b=0.61
8 Cavities, 6 cells/cavity
5 focusing quads
b=0.81
8 Cavities, 8 cells/cavity
3 focusing quads
b=1.0
8 Cavities, 9 cells/cavity
1 focusing quad
Elliptical b=0.47, 0.61, 0.81