1. MQXF updates
P. Ferracin
October 9th, 2014

2. Outline Overview and naming convention Status and plans Winding tests
MQXF magnetic and magnet length
String test
P. Ferracin
09/10/2014

3. Introduction MQXF overview
Target: 140 T/m in 150 mm coil aperture
To be installed in 2022 (LS3)
Q1/Q3 (by US LARP collaboration)
2 magnets with 4.0 m of magnetic length within 1 cold mass
Q2 (by CERN)
1 magnet of 6.8 m within 1 cold mass, including MCBX (1.2 m)
Baseline: different lengths, same design
Identical short model magnets SQXF
Outline
Status of R&D and challenges:
Conductor, cable, insulation
Coil-structure design, integration
Quench protection
Planning
by E. Todesco
P. Ferracin
09/10/2014

4. Naming convention By Samy Chemli
P. Ferracin
09/10/2014

5. Naming convention By Samy Chemli
P. Ferracin
09/10/2014

6. MQXF magnet design Coil Pole alignment key (G11) Bolted collar (Al)
Bolted pads (iron)
Masters (iron)
For bladders
Yoke (iron)
Aluminum shell
For pre-load
Stainless steel shell
LHe containment
P. Ferracin
09/10/2014

7. MQXF magnet design Coil Pole alignment key (G11) Bolted collar (Al)
Bolted pads (iron)
Masters (iron)
For bladders
Yoke (iron)
Aluminum shell
For pre-load
Stainless steel shell
LHe containment
P. Ferracin
09/10/2014

8. MQXF magnet design
P. Ferracin
09/10/2014

9. Overview Short model program: 5 CERN-LARP models, 2014-2016
Coil fabrication starts in 02-03/2014
First magnet test (SQXF1) in 05/2015 (3 LARP coils, 1 CERN coil)
Long model program: 2 (CERN) + 3 (LARP) models,
Coil fabrication starts in 2015: 01 (LARP), 09 (CERN)
First magnet test in 08/2016 (LARP) and 07/2017 (CERN)
Series production: 10 (CERN) + 10 (LARP) cold masses,
P. Ferracin
09/10/2014

10. Outline Overview and naming convention Status and plans Winding tests
MQXF magnetic and magnet length
String test
P. Ferracin
09/10/2014

11. MQXF short model Coil fabrication status
LARP coil #1
completed
LARP coil #2
Ready for impregn. At FNAL
LARP coil #3
Prep. For impregnation at BNL
CERN coil #001
Prep. For impregnation
CERN coil #101
Prep. For impregnation
CERN coil #102
Wound and cured
P. Ferracin
09/10/2014

12. MQXF short model coil fab. Schedule HiLumi-LARP Daresbury (11/13)
P. Ferracin
09/10/2014

13. MQXF short model Support structure
Al shell
Delivered and measured
Al dummy coils
Delivered and measured
Iron yoke
Delivered
Iron masters
Delivered and measured
Al collars
Delivered and measured
150 mm mock-up
Delivered and measured
P. Ferracin
09/10/2014

14. MQXF first short model schedule HiLumi-LARP Daresbury (11/13)
Support structure fabricated and qualified by 02/15
First magnet assembly in 03/15
1 coil from CERN
First test by 06/15
P. Ferracin
09/10/2014

15. MQXF long model Status CERN LARP
Design of long coil and mandrel in progress
LARP
The design of coil fabrication tooling (including winding/curing ,reaction/impregnation and lifting/shipping) has been completed.
Procurement of the tooling launched
The plan is to start 1st practice coil winding early 2015
P. Ferracin
09/10/2014

16. MQXF first long model schedule HiLumi-LARP Daresbury (11/13)
Start winding
LARP in 01/2015
CERN in 09/2015
First “real” or “mirror” coil
LARP in 10/2015
CERN in 08/2016
First long prototype test
LARP in 11/2016
CERN in 11/2017
P. Ferracin
09/10/2014

17. Outline Overview and naming convention Status and plans Winding tests
MQXF magnetic and magnet length
String test
P. Ferracin
09/10/2014

18. Test set-up Inner layer, favourable Outer layer, unfavourable
P. Ferracin
09/10/2014

19. Exampled of unstable cable
P. Ferracin
09/10/2014

20. Winding test example (with tool)
P. Ferracin
09/10/2014

21. Winding test example (with tool)
P. Ferracin
09/10/2014

22. 45 winding tests performed
P. Ferracin
09/10/2014

23. P. Ferracin
09/10/2014

24. Winding test conclusions By P. Ferracin, L. Oberli, S
Winding test conclusions By P. Ferracin, L. Oberli, S. Izquierdo Bermudez
In general, all RRP and PIT cables are stable in the favorable direction
Cable wound clock-wise around the pole (inner layer condition)
In general, all RRP and PIT cables are unstable in the unfavorable direction
The few PIT which did not show unstable behavior were not reproducible
The cable behaviour was not improving when playing with the winding tension
We performed tests at different winding tension (25 kg, 45 kg, 60 kg), and the behaviour was similar
The core does not seem to play a role in the cable mechanical stability
We only wound one RRP sample without core, but we also show this “typical behaviour”.
In general, all RRP and PIT cables can be wound with the tool (and/or with the binder)
In some cases it is required to use a thinner tool which better follows the cable during all the length of the turn
The feed-back from the winding team about the stability of the insulated RRP cable during winding of coil 101 and 102 is extremely positive.
Not clear popped-out strands were observed, also by partially unwinding some of the turns
Similar conclusions come from LARP, which has wound 3 coils with RRP strand using the binder (and not tool)
From the winding team, it seems also clear that the braided insulation plays a key role in improving stability
However, it is not clear if, by simple visual inspection and touching the insulated cable during winding, popped strand can be detected.
CERN coil 101 (low grade RRP) and LARP coil 1 will be cut to check
P. Ferracin
09/10/2014

25. Outline Overview and naming convention Status and plans Winding tests
MQXF magnetic and magnet length
String test
P. Ferracin
09/10/2014

26. MQXF magnet design P. Ferracin 09/10/2014
Magnetic length of short model
P. Ferracin
09/10/2014

27. MQXF magnet design
From magnetic length to end of magnet (end-plate + connection box)
Connection side: 510 mm
Non-connection side: 214 mm
P. Ferracin
09/10/2014

28. Q1 Connection side: from magnetic length to end of end-cover
=540 mm (510 mm magnetic to end of magnet in MQXF)
Non-connection side: from magnetic length to Q1a-Q1b “middle point”
=250 mm (214 mm magnetic to end of magnet in MQXF)
P. Ferracin
09/10/2014

29. Q2 Connection side: from magnetic length to end of end-cover
=559 mm (510 mm magnetic to end of magnet in MQXF)
Non-connection side: from magnetic length to Q1a-Q1b “middle point”
172+78=250 mm (214 mm magnetic to end of magnet in MQXF)
P. Ferracin
09/10/2014

30. Minimum distance between Q1a and Q1b magnetic lengths
From magnetic length to end of magnet (end-plate + connection box)
Non-connection side: 214 mm
Minimum distance: (?) = ~ 450 mm
P. Ferracin
09/10/2014

31. Q1-Q2-Q3 connection side From magnetic length to end of end-cover
559 mm in current lay-out
510 mm magnetic to end of magnet in short model
Lyra and end-cover
Additional ~200 mm  759 mm
P. Ferracin
09/10/2014

32. Outline Overview and naming convention Status and plans Winding tests
MQXF magnetic and magnet length
String test
P. Ferracin
09/10/2014

33. String test String test planned for 2019-2020
Cold mass magnet in its cryostat with beam screen by 01/2019
Delivery of cold mass in 06/2018
Delivery of magnet in 02-03/2018
Second CERN long model
Second and third LARP long models
P. Ferracin
09/10/2014