Spokes vs. Elliptical cavities for medium-high energy. Sébastien Bousson (IPN Orsay).

1. !
quot;#!

2. # quot; #
% quot;
&' ' ! $( $ !$
# )*
+ quot;
! quot; quot;#
# quot; quot; ! $
$ $
Sebastien Bousson, Spoke vs elliptical cavities for medium-high energy , ESS Bilbao Initiative Workshop, 15-17 March 2009 $

3. , -+ + .. , (.
Sebastien Bousson, Spoke vs elliptical cavities for medium-high energy , ESS Bilbao Initiative Workshop, 15-17 March 2009 %

4. ' ( ) * +
,
-
- .
Sebastien Bousson, Spoke vs elliptical cavities for medium-high energy , ESS Bilbao Initiative Workshop, 15-17 March 2009 &

5. / & )
. 0! quot; #
β 1 2'
!# 3
quot; # 44 5
Sang-Ho Kim, Linac 02
β 6 2'
7
! ! '
89 quot; quot; #
! $ #
+: & ! )$+ 1 ; < = &
! β# ! ; >quot; ? 3' -$
@
) quot; AB/ #
Sebastien Bousson, Spoke vs elliptical cavities for medium-high energy , ESS Bilbao Initiative Workshop, 15-17 March 2009 /

6. C + < + +A . +C +
Sebastien Bousson, Spoke vs elliptical cavities for medium-high energy , ESS Bilbao Initiative Workshop, 15-17 March 2009 0

7. quot; ! quot;
2+
! quot; # &
)
!' #
quot; 4 '
+: ! ;2
D quot; '8 ; ? @-
3 ? 3' -
@ quot; quot;
3 quot;4 ! +
8 quot; ! !
'
! quot; quot; $#
&# $ quot; quot;# quot;
@ )
Sebastien Bousson, Spoke vs elliptical cavities for medium-high energy , ESS Bilbao Initiative Workshop, 15-17 March 2009 1

8. E 8A ( 9+
Sebastien Bousson, Spoke vs elliptical cavities for medium-high energy , ESS Bilbao Initiative Workshop, 15-17 March 2009 5

9. E#
quot; quot; quot; $
quot; quot; & 4 # )$ F/ #>
quot; quot; G
quot; ! ! H
A quot; quot;#
#
Sebastien Bousson, Spoke vs elliptical cavities for medium-high energy , ESS Bilbao Initiative Workshop, 15-17 March 2009 6

10. (= I ,A + , A
Sebastien Bousson, Spoke vs elliptical cavities for medium-high energy , ESS Bilbao Initiative Workshop, 15-17 March 2009 78

11. (
quot; quot;#
!
E ! $ quot;
& $ $J A $D A $ quot;>
quot; '
quot; ! quot; quot; !
! !
#quot; # quot; # ! quot;
89 # # !! quot; $
$ ! #
$ !
E
!' 8 '
Sebastien Bousson, Spoke vs elliptical cavities for medium-high energy , ESS Bilbao Initiative Workshop, 15-17 March 2009 77

12. (( + .+ A < <A / +
Sebastien Bousson, Spoke vs elliptical cavities for medium-high energy , ESS Bilbao Initiative Workshop, 15-17 March 2009 7$

13. !<
9 : 9
;3 < = +
, ) @
! @
( *
! 9 >?
9 .
Sebastien Bousson, Spoke vs elliptical cavities for medium-high energy , ESS Bilbao Initiative Workshop, 15-17 March 2009 7%

14. +: quot; !, quot; A '
CARE/HIPPI Final Report (2008):
Sebastien Bousson, Spoke vs elliptical cavities for medium-high energy , ESS Bilbao Initiative Workshop, 15-17 March 2009 7&

15. +: quot; !, quot; A '
Results @ T=4.2 K
G. Olry, Linac 08 Frequency Ea* Epk Bpk Voltage
Type Optimal beta
[MHz] [MV/m] [MV/m] [mT] [MV]
LAB
Single 352 0.20 4.77 32 69 0.82
IPN Orsay
Single 352 0.36 8.14 38 104 2.49
Single 855 0.28 4.40 24 56 0.26
Single 345 0.29 8.75 40 106 2.21
Single 345 0.40 7.02 44 117 2.44
ANL
Double 345 0.40 8.60 40 79 4.49
Triple 345 0.50 7.65 28 88 6.65
Triple 345 0.62 7.94 31 95 8.70
Triple 760 0.20 8.63 42.8 87.2 1.36
FZ-Juelich
Triple 352 0.5 5.8 27 63.8 4.7
Single 350 0.21 (EZ01) 7.50 38 100 1.35
LANL
Single 350 0.21 (EZ02) 7.22 37 96 1.30
Fermilab Single 325 0.21 (SSR1-01) 12 69.5 112.5 3.49
Sebastien Bousson, Spoke vs elliptical cavities for medium-high energy , ESS Bilbao Initiative Workshop, 15-17 March 2009 7/

16. +: quot; !, quot; (quot;
Spoke cavities Results @ T=4.2 K
Frequency Ea* Epk Bpk Voltage
Type Optimal beta
[MHz] [MV/m] [MV/m] [mT] [MV]
LAB
ANL Triple 345 0.50 7.65 28 88 6.65
FZ-Juelich Triple 352 0.5 5.8 27 63.8 4.7
Elliptical cavities Results @ T=2 K
Frequency Ea* Epk Bpk Voltage
Type Optimal beta
[MHz] [MV/m] [MV/m] [mT] [MV]
LAB
SNS
6 cells 805 0.61 16 43.4 91.5 10.9
(Average)
INFN Milan 5 cells 704 0.5 17 60.7 100 8.5
CEA Saclay 5 cells 704 0.5 15 50.4 84 7.5
Sebastien Bousson, Spoke vs elliptical cavities for medium-high energy , ESS Bilbao Initiative Workshop, 15-17 March 2009 70

17. !<
, : +
2
quot; 9 $
7/ : A
quot;9 B
: B
.
Sebastien Bousson, Spoke vs elliptical cavities for medium-high energy , ESS Bilbao Initiative Workshop, 15-17 March 2009 71

18. !<
- B9 +
CARE/HIPPI
Final Report (2008)
4
Sebastien Bousson, Spoke vs elliptical cavities for medium-high energy , ESS Bilbao Initiative Workshop, 15-17 March 2009 75

19. !<
- : +9 B B
A
C <
: +
;C < 58 2
;
13,6 MV/m 14,3 MV/m 7,3 MV/m
6,8 MV 7,15 MV 6 MV
D B
9
7,8 MV/m 8,2 MV/m 7,7 MV/m
) .
Sebastien Bousson, Spoke vs elliptical cavities for medium-high energy , ESS Bilbao Initiative Workshop, 15-17 March 2009 76

20. !!
E quot; $
!!
89
2 < :
B : 9 (! *
B9 =
Sebastien Bousson, Spoke vs elliptical cavities for medium-high energy , ESS Bilbao Initiative Workshop, 15-17 March 2009 $8

21. J C A ,,+ / C /+
Sebastien Bousson, Spoke vs elliptical cavities for medium-high energy , ESS Bilbao Initiative Workshop, 15-17 March 2009 $7

22. J C C
+ $ J C
# quot;>
quot;
&# # )' quot;
quot; : :# J C #quot;
quot; quot;# K < quot;# 0 - quot;
# $ 0 G
#> J C
LJ ! !B quot;
LC quot; quot;
L quot; & )
8 quot;
Sebastien Bousson, Spoke vs elliptical cavities for medium-high energy , ESS Bilbao Initiative Workshop, 15-17 March 2009 $$

23. ( C 8
Sebastien Bousson, Spoke vs elliptical cavities for medium-high energy , ESS Bilbao Initiative Workshop, 15-17 March 2009 $%

24. ( C 8
quot; :
! quot; '
# $ quot; quot; '
quot; $
8 : !
quot; #
L. 4 !
LC
Sebastien Bousson, Spoke vs elliptical cavities for medium-high energy , ESS Bilbao Initiative Workshop, 15-17 March 2009 $&

25. ( C 8
( quot;
. 4 !
M( A + NJ ,, $@ 2 2 7 O
Sebastien Bousson, Spoke vs elliptical cavities for medium-high energy , ESS Bilbao Initiative Workshop, 15-17 March 2009 $/

26. ( (.9
Sebastien Bousson, Spoke vs elliptical cavities for medium-high energy , ESS Bilbao Initiative Workshop, 15-17 March 2009 $0

27. (
3
8 ;/ E β E 8 ;5
9 9
quot; F
( * :
2 9 (; ;
3*
B +
HG D A
β ? 8 ;/ 9 I ( ;*
HG A
G <
HG F 9 A
9
: 9 ! :
Sebastien Bousson, Spoke vs elliptical cavities for medium-high energy , ESS Bilbao Initiative Workshop, 15-17 March 2009 $1

28. (
& H) + $ quot;
2 $ JK3
β
2 B 8 ;/ 8 ;0B
9 ;
! =
Sebastien Bousson, Spoke vs elliptical cavities for medium-high energy , ESS Bilbao Initiative Workshop, 15-17 March 2009 $5