1. HO Corrector Magnets: decapole test and future plans
Marco Statera
on behalf of the LASA team
INFN Milano - LASA
CERN – 25 October 2017

2. MCQSXFP (4pole) and MCTXFP(12pole) planning
OUTLINE
MCDXFP1 (decapole)
Cold test results
MCQSXFP (4pole) and MCTXFP(12pole) planning
MgB2 RCSM status and planning
New cryostat
M. Statera- 2017/10/25

3. HO CORRECTOR MAGNETS ZOO
MCDXFP1
M. Statera- 2017/10/25

4. integrated field @ Iop @ r50 mm
MCDXFP1 10POLE
nominal
simulation
length
172 mm
183 mm
integrated r50 mm
25 Tmm
26 Tmm
magnetic length
95 mm
97 mm
harmonics
B15=11.6 B25=-0.7
5 coils BTS2
5 coils hybrid
COILS
Updated BTS2 Arisawa design
Hybrid BTS2/DURATRON
Improved electrical connection design, pcbs supporting and integration with connection box
M. Statera- 2017/10/25
M. Todero and D. pedrini

5. Measurement As assembled After thermal cycle GROUND INSULATION
10 mA limit
M. Statera- 2017/10/25

6. THERMNAL CYCLES Cooldown about in 1 day Warmup in about 1 week
Nitrogen heat exchanger
Warmup in about 1 week
Standard warming speed below 10 k/h
Using heaters K/h (temperature range 20 K -60 K )
temperature
hours
hours
M. Statera- 2017/10/25

7. MCDXFP1 TEST Week 1 Week 2 – starting on 9/10/2017
4.2 K Iult , 121 A (115% Iop)
2.17 K Iult , 121 A
Week 2 – starting on 9/10/2017
no dump resistance quench
(operating conditions simulation)
training
M. Statera- 2017/10/25

8. MCDXFP1 QUENCH SEQUENCE
B9-B10
B3-B4
B3-B4
B7-B8
B3-B4
B3-B4
One provoked
One 98 A quench
Ultimate 114 A -1 h test (4.2 K and 2.17 K)
Reached 100% S.S.L at 4.2 K
M. Statera- 2017/10/25

9. QUENCH vs COILS TECHNOLOGY
Quench detection detects 2 coils
Quench heater on coil B3 (3 provoked)
4 quenches on B3-B4
1 quenches on B7-B8
1 quenches on B9-B10 B1
M10-05 B2
M10-08 B3
M10-09 B4
M10-11 B5
M10-13 B6
M10-06 B7
M10-10 B8
M10-12 B9
M10-14
B10
M10-15
BTS2 4
One (2) BTS2 coil less robust
No sensitive difference between coils’ technology 1
DURATRON 1
M. Statera- 2017/10/25

10. SINGLE POINT MAGNETIC FIELD
Single Hall probe
rref= 50 mm
Errors not shown
Good reproducibility
Harmonic measurements
at CERN in Nov 2017
4.2 K and 2.17 K
4.2 K after thermal cycle
O simulations
M. Statera- 2017/10/25

11. QUENCH PROTECTION SYSTEM UPGRADE
2 IGBTS working in parallel
Same components as 10 kA switch (by A. Paccalini and M. Quadrio)
15 ms
<1 ms
trigger
M. Statera- 2017/10/25

12. WORKING CONDITION TEST
Protection in LHC
Measuring current
time range ms
Max current: ultimate current (114 A)
Protection at LASA
Measuring total voltage and differential voltage (half magnet)
Quech induced by heater (and AlN insert)
Increase validation time
Reached 120 ms and 140 ms at ultimate current
Decapole survived
M. Statera- 2017/10/25

13. AFTER THERMAL CYCLE Detailed inspection on one side
One defect on coil M10-14
No detached wedges
M. Statera- 2017/10/25

14. tender approved by INFN contract sent to company – arrived
MCTXFP1 AND MCQSXFP1
tender approved by INFN
contract sent to company – arrived
(foreseen) start in October – 3 wks delay
Tentative schedule
April 2018 MCTXFP delivered to LASA
Sept MCQSXFP delivered to LASA
M. Statera- 2017/10/25

15. ROUND COIL MAGNET demonstrator demonstrator mechanics design ongoingFe
coil
100 mm
f 380
demonstrator
mechanics design ongoing
Winding machine done
mould construction done
first batch of insulated MgB2 wire delivered at LASA
schedule
winding in 2017
magnet assembly 1Q 2018
demonstrator
M. Todero and D. pedrini
C. Uva
M. Statera- 2017/10/25

16. ROUND COIL MAGNET II Test Cu coil schedule winding in 2017
M. Quadrio and A. Paccalini
schedule
winding in 2017
magnet assembly 1Q 2018
M. Statera- 2017/10/25

17. NEW CRYOSTAT
Safety
Valve and disk
Connections X3
Cryostat for testing MCTXFP1 (12P), MCQSXFP1 (4P) and series magnets
520 mm inner diameter
About 3 m cold volume (with top flange insulation)
Up to 4 magnets (3 possible configurations)
Flange modification, thermal insulation, magnet support, room temperature connections.
Ordered end 2017
Mag.meas. CL
2+4
HE inlet
M. Statera- 2017/10/25

18. 3 batches TEST CONFIGURATIONS 18 magnets 2X4P 2X12P 5 cooldowns 600
2350
12P 4P
3 batches
18 magnets
2X4P 2X12P
5 cooldowns
M. Statera- 2017/10/25

19. MgB2 RCSM MCDXFP1 MCQSXFP1 and MCTXFP1: 2018 New cryostat (MAGIX)
CONCLUSION
MCDXFP1
assembled
first cooldown and thermal cycle results
MCQSXFP1 and MCTXFP1: 2018
MgB2 RCSM
Winding end 2017
New cryostat (MAGIX)
Flange and magnet support 1Q 2018
M. Statera- 2017/10/25