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Morteza Aslaninejad Cristian Bontoiu Juergen Pozimski

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Presentation on theme: "Morteza Aslaninejad Cristian Bontoiu Juergen Pozimski"— Presentation transcript:

1 Morteza Aslaninejad Cristian Bontoiu Juergen Pozimski
Cavities in NF-Linac Morteza Aslaninejad Cristian Bontoiu Juergen Pozimski

2 Fast acceleration Linear Pre-accelerator (244 MeV to 900 MeV)
RLA I pass, 0.6 GeV/pass, (0.9 GeV to 3.6 GeV ) RLA II pass, 2 GeV/pass (3.6 GeV to 12.6 GeV ) Non scaling FFAG - 8 revolutions (12.6 GeV to 25 GeV )

3 Linac components Number of solenoids: 6+8+11 = 25 Number of Cavities :
6+8*2+11*4 = 66 Target Frequency : MHz Bunch spacing : 5 ns Number of Bunches :88

4 SC Linac - 244 to 909 MeV. 25 cavities: First 6. 744826 m cavities
SC Linac to 909 MeV. 25 cavities: First 6* m cavities. Second 8* m cavities. Third 11* 2* m cavities. 8 one meter solenoids. ks=1 6,one meter solenoids. ks=1.4 11 one meter solenoids. ks=0.83 8 medium cryos 17 MV/m 11 long cryos 17 MV/m 6 short cryos 15 MV/m 1.1 Tesla solenoid 1.4 Tesla solenoid 2.4 Tesla solenoid

5 M. Aslaninejad (J. Pasternak)
, CERN M. Aslaninejad (J. Pasternak)

6 0.685m 0.744m 0.230m

7 Single Cavity Design-Comsol

8 Frequency Scan

9 Single cavity with two tails

10 Frequency Scan

11

12 Single cavity with two tails Poisson-Superfish
f= MHz

13 Ez

14 Cavity Pair without tails

15 Frequency scan

16

17 f= e8 f= e8

18 f= e8 f= e8

19 Pair cavities with two tails

20 Frequency scan

21

22 Pair cavities using Poisson- Superfish
f= MHz

23 Ez

24 Outlook Cavities for the Linac with different geometries using Comsol-RF module have been simulated. Frequency scan , field map and characteristic parameters have been obtained. Field map for solenoids produced. Particle tracking using GPT done(Cristian) Issues like Beam loading are consider(Juergen)

25


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