1. Status of Cavities at DESY
A.Matheisen
Overview on cavities
Status of available cavities
Planed actions in 2005
A.Matheisen MKS3
Module meeting

2. Resonators installed in modules
Name
module
Tanks typ D1
1star
2 / He line on top D2
A17
A18
S28
3 star
S29
S30
S31
S32
S34 4
3/ He line on 45o
D36
1 star
D37
2 star
D40
3star
D41
D42
C44
C46
C47
C48
Z50
Name
module
Tanks typ
z51
2 star
2 / He line on top
z52 4
3/ He line on 45o
Z53
Z54
Ac 55
C 56
AC 57
C 58
3 star
Ac 59
Ac 60 5
Ac 61
Ac 62
Ac 63
Ac64
Ac 65
Ac 66
Ac 69
Ac 72
Ac 77
Ac 79
A.Matheisen MKS3
Module meeting

3. Cavities out of serviceD3
Tuner test equipment
Nb Lips D4
Tuner test
Nb lips S7
Exhibit for accelerator technology S8 S9
Test equipment for tuner development
S10
Test cavity for welding experiments
Nb Ti flanges
S11
Exhibit on cryomodule model
NbLips
S12
D38
Cold leak in cell
Nb Ti
C 43
Repair at Cerca
Leak in weld
Ac 67
Cold leak not found
no tank
A.Matheisen MKS3
Module meeting

4. Cavity for high gradient module no 6
CAVIYT Number
Location
Situation
Next
AC 70
RR/ Chechia
ready for module 6
AC 71
qualified for module 6
Tank welding after retest with new antenna
AC 73
AC 74
prep
 not qualified
New EP
AC 75
Prep
AC 76
AC 78 RR
not qualified
AC 80
Hall 3
Needs decision
AC 81
A.Matheisen MKS3
Module meeting

5. Cavities for module 7
Cavity
Status
Next
following
Last Eacc vertical
A15
New flange
New BCP
Test
20,8
C21
Flanges removed
Flange welding
New BCP + Test
28,8
C22
19,4
C23
Under work
Flange removal
24,0
C24
19,7
C25
27,5
C26
18,2
C27
26,7
Experience with 1st series of cavities for module 1star showed that
2 cavities lost gradient during this operation
Spare for module 7
A16 *
On hold spare for module 7
Wait for new treatment
New BCP+Test
12,7 (31,3 before)
D39 21
A.Matheisen MKS3
Module meeting

6. Spare for module with tank type 3 needed
RR/ Cechia
Tank type 3
Nb Ti
Under retest
Ac 68
HOM damping to be tested (deformation on end cell)
Nb TI
Wait for test
C45
Cavity ok
test at Saclay Cryholab
Tank type3
under test
A.Matheisen MKS3
Module meeting

7. Overview on cavities that can serve as test vehicle
Name
equipment
situation
Comments
Gradient on vertical test
P-1
Nb ti flange
Test cavity since 10 Years
Only 1.5 mm wall left !!
16,4
P-2
Nb Lip flange
stored
Need new flanges
15,5
A14
Test cavity for Ep parameter finding
Low gradient weld problem
Nb TI / Nb Lips
6,3
S35
Leak on reference ring
No tank
Needs repair
Nb Ti
23 ( 28,6 before)
Z49
Wait for treatment
Nb TI Saclay HOM
17,6
Z 82
Limited by bad weld
1400 C post purification
27,8
Z83
25,0
Z84 23
A.Matheisen MKS3
Module meeting