1. Magnetic measurements on the MQXFS6b at ambient temperature
Lucio Fiscarelli
Susana Izquierdo Bermudez
Eelis Takala
WP3 meeting, 24/07/2019

2. Preface on MQXFS6a b3 -4.5 units a3 +3 units MQXFS6a
Coil pack + Pads (927)
After centering (927)
After loading (927) TF
TF int
T/m/kA
T/kA
8.711
9.868
8.731
9.925
8.761
9.958
Lm (mm)
1133 mm
1137 mm n bn an 3
-4.65
4.90
-4.54
3.06
-4.26 4
0.15
-1.17
0.62
-0.98
0.66
-1.59 5
-0.54
-1.24
-0.24
-1.39
-0.34 6
-4.87
0.73
-4.19
1.09
-2.96
1.12 7
-0.85
1.63
-0.90
1.44 8
-0.05
-0.45
-0.42
-0.04
-0.41 9
0.19
0.00
0.23
-0.01
0.02 10
-0.07
-0.06
-0.02
0.05 11
-0.03 12
0.01
0.03 13
0.04 14
-0.72
-0.74 15
125 µm
2 x 50 µm Kapton g
100 µm
50 µm
25 µm
C212
C209
C208
C210
8 x 125 µm Kapton
208: L+R = 50 µm
209: L+R = µm
210: L+R = 0 µm
212: L+R = -50 µm
WRT Nominal Radial Size:
Coil pack +32 µm
Shimming µm
Tot µm
b units
a3 +3 units
Clearance per side: 300 µm

3. Magnet assembled without pole keys
MQXFS6b
Magnet assembled without pole keys
All coils previously tested at 1.9 K
2 in MQXFS6a
Coils 210, 212
2 in MQXFS5a
Coils 203, 204
210
204
203
212

4. MQXFS6b: coil sizes Eelis Takala MQXFS6a MQXFS6b*
Max(µm)
Min(µm)
Mean(µm)
Assumed(µm)
208
151
-38 64 50
209
-113
-227
-174
-150
210 34
-59
-15
212 -5
-61
-50
Coil
Max(µm)
Min(µm)
Mean(µm)
Assumed(µm)
203 93 13 42 50
204
-42
-119
-82
-100
210 6
-73
-68
-50
212
-24
-113
-37
*All coil re-measured after test at cold in the fist assembly

5. MQXFS6b: coil shimming
Eelis Takala

6. MQXFS6b: MM at ambient temperature
Coil pack + Pads (927)
After centering (927)
After loading (927) TF
TF int
T/m/kA
T/kA
8.781
9.974
8.805
9.519 (?)
8.842
10.104
Lm (mm)
1136
1081 (?)
1143 n bn an 3
-0.36
4.99
-0.41
4.66
0.31
4.38 4
0.49
-7.15
1.09
-6.36
0.79
-8.44 5
1.07
-0.85
1.37
-1.09
0.84 6
-4.93
0.55
-4.48
0.73
-3.35
0.68 7
-0.21
0.45
-0.19
0.00
0.46 8
-0.05
-0.51
-0.06
-0.50
-0.62 9
0.04
-0.25
-0.02
-0.24
-0.20 10
0.23
-0.07
0.30
0.28 11
-0.04
0.13
-0.03
0.14 12
0.03
0.05
0.01 13
0.18
0.08 14
-0.73
-0.74
-0.75 15
TF +40 units before/after loading
b units after before/after loading
a3, a4 larger than expected

7. MQXFS6b: multipoles along the straight sectionbn an
Coil pack
units
units n n bn an
Centering
units
units n n bn an
Loading
units
units n n

8. MQXFS6b: magnetic shimmingy
a4 of -8 units cannot be completely corrected by using the magnetic shims
a3 of -4 units can be corrected
210
204 x
203
212
Correction capabilities using 9x58 mm shim in the bladder slots
Order bn an 3
0.00
-3.42 4 5
0.11