1. Helene Felice 02/15/2013 HiLumi Meeting HQ Program
HQ02 Plans for assembly
Helene Felice
02/15/2013
HiLumi Meeting
HQ Program

2. Outline Magnet overview HQ02 Assembly plan - Key focus areas
Assembly: timeline
02/15/2013
H. Felice

3. Overview of the HQ magnet parameters
4.3 K
1.9 K
Typical Iss
17.3 kA
19 kA
Gradient at Iss
195 T/m
213 T/m
Peak Field at Iss
13.6 T
14.8 T
Stored energy at Iss
0.9 MJ
1.1 MJ
Fx per octant per unit length at Iss
2.7 MN/m
3.15 MN/m
Fy per octant per unit length at Iss
-3.9 MN/m
-4.7 MN/m
Fz per magnet end at Iss
1.06 MN
1.28 MN
In absence of HQ02 short sample limit, the HQ01e numbers will be used as references in these slides
02/15/2013
H. Felice

4. Structure and assembly steps overview
Collar-pack assembly
4 collars bolted against the full length G10 keys
Shimming of the alignment key to ensure contact between collar and keys
Coil-pack assembly
4 pads bolted around the collars
Final assembly and loading
Master/bladders and Keys stack is prepared based on coil-pack assembly
Insertion of the coil-pack in the yoke shell sub-assembly by sliding on the bottom masters
Insertion of the side and top masters
Masters include load keys and bladders + pull shims
Key parameters to watch
Preload level
Alignment: collar and key must be in contact
Preload uniformity
Coil-pack assembly
Collar pack assembly
Bladder slot
Master
02/15/2013
H. Felice

5. HQ02 Azimuthal Preload Target
Room temperature preload transfer function
Conservative Target preload ~ 200 T/m
Target Preload at 300 K:
eq shell / pole = 863 me / -450 me
sq shell / pole = 66 /-63 MPa
Target Preload at 4.2 K:
eq shell / pole = 1905 me / -720 me
sq shell / pole = -169 / -147 MPa
02/15/2013
H. Felice

6. Focus area # 1: Alignment (I)
Room temperature preload transfer function
Different transfer function depending on:
collar / key contact or absence of contact
02/15/2013
H. Felice

7. Focus area # 1: Alignment (II)
Room temperature preload transfer function
Different transfer function depending on:
collar / key contact or absence of contact
HQ01a-b: no alignment
HQ01c-d-e: alignment
Importance of key/collar shimming
Use of pins and feeler gauges to quantify gaps
02/15/2013
H. Felice

8. Focus area #2 Preload distribution and uniformity
Previously HQ assemblies and previous LARP magnets exposed the importance of matching the coil OD to the collar/pad ID
Preload distribution on the coil OD can be controlled by adjusting the radial shims
Attempt to correlate with CMM measurements
Adjustment made using Fuji pressure sensitive film during collar pack assembly
2 IR collars available
02/15/2013
H. Felice

9. Focus area #2 Preload distribution and uniformity among coils
HQ01d
HQ01e
Assembly
Assembly
θ = -62 6 MPa
θ = -43 20 MPa
Adaptive shimming made based on coil pole SG readings improved preload uniformity among coils
Excitation
Coil 8
Excitation
Coil 8
02/15/2013
H. Felice

10. Focus Area #3 Apply a conservative preload to avoid degradation
02/15/2013
H. Felice

11. HQ02 Preload Target summary
Conservative Azimuthal Target preload ~ 200 T/m
Target Preload at 300 K:
eq shell / pole = 863 me / -450 me
sq shell / pole = 66 /-63 MPa
Target Preload at 4.2 K:
eq shell / pole = 1905 me / -720 me
sq shell / pole = -169 / -147 MPa
Axial Preload
sz rod = 60 / 160 MPa
Axial preload was never an issue in HQ
Fuji paper used to evaluate ideal radial shimming
Adaptive shimming is a possible option if spread between SG is larger than 10 MPa
02/15/2013
H. Felice

12. Timeline By the end of the week: coil arrangement Week of 02/18/2013:
Iteration on collar pack assembly
Week of 02/25/2013
Coil pack finalized
Electrical QA of the coil-pack
Coil pack insertion in the yoke-shell sub-assembly
Coil end-shoe preparation for axial pushers and bullets
Week of 03/04/2013
Azimuthal and axial Preload
Starting week of 03/11/2013
Electrical QA before pizza-box assembly
Pizza-box assembly
Instrumentation prep for testing at FNAL …
02/15/2013
H. Felice

13. Additional Material

14. Coil pole SG during assembly
HQ01c
HQ01d
HQ01e
02/15/2013
H. Felice

15. Shell SG during assembly
HQ01c
HQ01d
HQ01e
02/15/2013
H. Felice

16. HQ01d Coil sq distribution
02/15/2013
H. Felice

17. HQ01 baseline
02/15/2013
H. Felice

18. Azimuthal HQ01a Preload Targets
Initial preload target based on Gss = 219 T/m at 19.6 kA (design values)
Targets:
eq shell = 1028 me at 300 K and 2086 me at 4.2 K
eq pole = -536 me at 300 K and -828 me at 4.2 K
In terms of stress
sq shell = 78 MPa at 300 K and 185 MPa at 4.2 K
sq pole = -76 MPa at 300 K and -159 MPa at 4.2 K
02/15/2013
H. Felice