Challenges in Mechanical and Electrical Design of EuCARD2 HTS Insert Magnet's.!!

Size: px

Start display at page:

Download "Challenges in Mechanical and Electrical Design of EuCARD2 HTS Insert Magnet's.!!"

Shannon Daniela Snow
5 years ago
Views:

Challenges in Mechanical and Electrical Design of EuCARD2 HTS Insert Magnet's.!! G. Kirby, J. van Nugteren, J. Murtomaki, K. Broekens, H. Bajas, A. Ballarino, M. Bajko!L. Bottura, M.Canale,! L.

1 Challenges in Mechanical and Electrical Design of EuCARD2 HTS Insert Magnet's.!! G. Kirby, J. van Nugteren, J. Murtomaki, K. Broekens, H. Bajas, A. Ballarino, M. Bajko!L. Bottura, M.Canale,! L.Gentini, J. Mazet, J.C. Perez, F-O. Pincot, G. de Rijk, A. Rijllart, L. Rossi, (CERN), M.Durante, P. Fazilleau, C. Lorin (CEA) M. Marchevsky, (LBNL), W. Goldacker, A. Kario, (KIT) A.Usoskin, (Bruker) 4/18/16 1

2 TALK OVERVIEW o EuCARD2 HTS Project o Material ReBCO o Cables o Magnet designs and optimization o Calculating current distribution the multi-physics program o Quench detection in ReBCO tape cables o Magnet development 4/18/16 2

INTRODUCTION TO THE EUCARD2 WP 10 PROJECT o! 5 Tesla stand alone, (18 Tesla to 20+ Tesla in 13 Tesla background or other) o! 40 mm aperture o! 10 ka class cable o!

3 INTRODUCTION TO THE EUCARD2 WP 10 PROJECT o! 5 Tesla stand alone, (18 Tesla to 20+ Tesla in 13 Tesla background or other) o! 40 mm aperture o! 10 ka class cable o! Accelerator Field quality 4.5K o! WP 10 Magnets o! 10.1 Communication o! 10.2 Cable 10kA 20T o! 10.3 Magnet o! 10.4 Test "#$%&&'()*+,-./'0.)'+1.)"&! 4/18/16 3

4 REBCO COATED CONDUCTOR TAPE 4/18/16 4

5 LONG LENGTHS o! m available &!! %!! ()*+*,-./(0))12+/345 $!! #!! "!!!! "!! #!! $!! %!! &!! '!! 678*+*72/395 Critical Current (A/cm) Position (m) 4/18/16 5

CABLE OPTIONS REBCO!"#$%&' ()*&"+,'!"#$%&' -(!(.' /+0*$#001'()*&"+,'!"#$%&'-/(!(.' 234,5$"36'34' 7354,'236+' -2872.' 73+9+0' 9 :!2;&66-4!!""# :;<!2<=>!?4! =>>!2<=-!?4! :?>!2<!=@!?4! @>>!

6 CABLE OPTIONS REBCO!"#$%&' ()*&"+,'!"#$%&' -(!(.' /+0*$#001'()*&"+,'!"#$%&'-/(!(.' 234,5$"36'34' 7354,'236+' ' ' 9 :!2;&66-4!!""# :;<!2<=>!?4! =>>!2<=-!?4! B CD!2E;4! '"%("# ;!2<!=@!?4! =>!2<!=A?4!!!2G4! *H!IJ+!8*$'! (1E1J/1! (1E1J/1! KA.>LA.@! (1E1J/1! "!2MD*4! *H!IJ+!8*$'! (1E1J/1! (1E1J/1! A'<>>' A'=;> -B.'

PUNCH-AND-COAT ;7!)*$$',!$(1)"',!8*$'! o!

Produce Cu-coated tape o! Punch meanders o!

Punch meanders (less than 5% I C degradation!

7 PUNCH-AND-COAT ;7!)*$$',!$(1)"',!8*$'! o! Standard Roebel production sequence o! Produce Cu-coated tape o! Punch meanders o! Assemble cable o! Modified Roebel production sequence o! Produce Ag-capped tape o! Punch meanders (less than 5% I C degradation!) o! Cu-coat (dog-boning!) o! Assemble cable -NOA!µ6!)J*P17! -N-A!µ6!)J*P17! C$P65Q',! -N-A!µ6!)J*P17! 7

8 COMPARING THE DESIGNS 4/18/16 8

9 PERCENTAGE ON THE LOAD-LINE o sdf Assumed homogeneous current distribution Angular dependence changes the picture may help with field quality?. 4/18/16 9

10 MODELING THE ROEBEL CABLE o! Two main unknowns for ReBCO coated conductor: o! Magnetization wide tapes act as mono-filaments allowing for large magnetization currents and uncertainty in the position of the current. What is the effect on field quality? o! Quench High Minimal Quench Energies (MQE) but slow normal zone propagation velocity. Challenge for quench protection. 4/18/16 10

11 4/18/16 11

12 CURRENT FLOW IN CABLE TYPES 4/18/16 12

13 QUENCH DETECTION SENSORS o Voltage taps o Pick-up coils o Temperature sensors (CCS, Fibre) o Acoustics 4/18/16 13

14 QUENCH ANALYSIS Temperature sensors 4/18/16 14

15 COIL VOLTAGES Mr. voltage tap 4/18/16 15

16 PICKUP COILS 4/18/16 16

17 MINIMUM QUENCH ENERGY IN HTS CABLE (MQE) o MQE for cables with 1,2,3,4,.. Tapes in cables. o HTS MQE is 3 orders of magnitude higher than low temperature superconductor o What will induce a Quench?. HTS Cables LHC LTS Nb- Ti A Pin LTS 5 Kg HTS 4/18/16 17

18 CURRENT REDISTRIBUTION IN TAPES o Can we detect the current distribution anywhere along the cable? o Use High pass filter to get rid of slow redistribution 18

19 COSINE THETA FIELD QUALITY cosine theta geometry (design by CEA Saclay) =!6J18"!JI! )J6$(P17! P6'! 4/18/16 19

20 ALIGNED BLOCK FIELD QUALITY 1 month of compupng Pme 4/18/16 20

21 HYSTERESIS/MAGNETIZATION LOSS o! Losses are two orders of magnitude more for Cosine Theta than for Aligned Block 4/18/16 21

22 CLIQ COUPLING-LOSS INDUCED QUENCH SYSTEM & HTS #$%%&'()*+,'-&".,-'&/*)0&12)*+,'-&" 3%,'45(6%7)1644&4) 89&,(:" =??,'$&1&)A,B,5615C)D&%6&')E,')>$-(&%&') ;<=>#9"!!"

23 Temperature profile in two adjacent HTS tapes Study jointly performed by E. Ravaioli and J. Van Nugteren Emmanuele Ravaioli, Jeroen Van Nugteren Op/misa/on of CLIQ fot HTS WAMHTS September CLIQ unit U 0 =1 kv C=10 mf

24 IMPREGNATION o! Impregnation is obligatory o! Looked at different resins o! CTD101G, CTD101K, etc. o! With glass sleeve insulation 4/18/16 24

25 4/18/16 25

26 COPPER RINGS 4/18/16 26

27 FORMER 3D PRINTING M*8'+5*R!`=>W! H8*51R'HH!H8''R!?'H8!/'R,! `AG!+',()PJ1!51!)JH8! XJRRJ/!$*+8H! Y:a[!R*H'+!/'R,517!!! W*H'+!/'R,517!H')PJ1!! 6*N!R'178"!-=_!66!

28 SOLDERING TOOLING?'6$'+*8('+!b,'7!Yc!! -]A! -AA! =]A! =AA! ]A! A! ZJR,'+517!$+JT*R!! =`A!Y!IJ+!-!651H! ajj6!8'6$!! P6'!! -AA!Y!! =A!H')!! ZJR,'+517!8JJR!)J18+JRH! $+'HH(+'!8J!`MD*!

$ROEBEL SOLDERED d'!r5e'e! \!!!!?"'!8"51!R*S'+!JI!HJR,'+!$ $h(+i*)'!0'8/''1!8"'!8*$'h.!! \! g'+s!rj/!!`!m$*!$+'hh(+'!$

29 ROEBEL SOLDERED d'!r5e'e! \!!!!?"'!8"51!R*S'+!JI!HJR,'+!bHJR,'+!8"'+6*R!)J18+*)PJ1!!>!66&6c.!! \! f(rrs!hjr,'+',!h(+i*)'!0'8/''1!8"'!8*$'h.!! \! g'+s!rj/!!`!m$*!$+'hh(+'!,(+517!hjr,'+517!! \! WJ/!8'6$'+*8(+'!5I!$JHH50R'.!!!!!

30 LAP JOINT INTERNAL TAPE RESISTANCE o Electrical resistance of REBCO lap joints characterized at 4.2 K versus field and at 77 K o Three topologies of lap joint investigated: no substrates (Type 1), one substrate (Type 2) or two substrates (Type 3) interleaved in between the HTS layers. o Lowest resistances measured for Type 0 at 4.2 K: o 11.6 nω cm 2 for Bruker, o 36 nω cm 2 for SuperPower and SuperOx tapes o 151 nω cm 2 for AMSC tapes. o 825 nω cm 2 for SUNAM (excessive value, could be smaller) o Type 0 resistance almost unchanged (<20%) vs. field and temperature o Type 1 joints: 7-16 times more resistive compare to Type 0 (except SuNAM*) o Type 2 joints times more resistive compare to Type 0 (except SuNAM*) o On-going work: o RRR measurement of Cu stabilizer o Characterization of 12 mm wide splices * measured excessive internal resistance on this batch In-Field Resistance of REBCO Electrical Joints at 4.2 K J. Fleiter and A. Ballarino, "In-Field Resistance of REBCO Electrical Joints at 4.2 K, CERN internal note , EDMS Nr: EuCARD2, WP 10.2 meeting CERN, 1st December

31 IMPREGNATION TOOLING. 4/18/16 31

32 W'h%!!HJR,'+',!)*0R'!8J!H'*R!+'H51! a57"8%!!h5r5)j1!ji'+!h'*r.!!d'!h''!8"'!8(0'!8"*8!5h!$+j8')p17!8"'!f50+'!!

33 ADJUSTING THE NUMBER OF TURNS SO THAT THE CABLE FITS THE SPACE AVAILABLE IN THE COIL CAVITY `!8(+1H!A.-66!8*$'!! =]!H8+*1,!)*0R'!!"57"'+!/51,517!8'1H5J1! ]!8(+1H!j!!A.=!66!8*$'!! =]!H8+*1,!)*0R'!

34 MOULD RELEASE ON COIL FORMER

35 YJ11')P17!6*71'8!8J! )(++'18!R'*,HV!!?'H8!8'6$!_A!X'!l*H!8J!]!^e!! Y(++'18!R'*,!"'*8!'N)"*17'+!!!!! X?Z! R51E! f'*8"'+!q'+j! B1!B+J1!SJE'! COLD TESTING IN GAS! f-!51!f+'*)h-! f\k'+j! 35

36 SM18, INFN, AND FRESCA2 CRYOSTATS.!! f+'h)*!-!8'h8!h8*pj1!,('!-a=>!!!!!! ZM=_!Z($'+!)+5P)*R!"'R5(6! H($$R5',!*8!*!/5,'!+*17'!JI! 8'6$'+*8(+'!!!! B[f[!8'H8!H8*PJ1!!

37 SUMMARY o PhD student Jeroen Van Nugteren has developed a multi-physics program that can predict: current distribution, quench, and much more! (Thesis due this year with full details). o We have a multi strand 10 ka cable. o We are about to test several very promising quench detection and protection systems. o Accelerator Field quality looks to be achievable. o Cable must be impregnated. o Joint design is a challenge. o We are taking advantage of the angular dependence. o I haven t presented any FEA but extensive studies have been performed. 4/18/16 37

38 THANK YOU FOR YOUR ATTENTION 4/18/16 38

39 4/18/16 39

40 MANUFACTURER PERFORMANCE 4/18/16 40

41 5 KA ROEBEL JOINT TEST IN GAS Evidence of current redistribupon between the 15 tapes.

42 MAGNETISATION IN CABLE STRAND. M*71'PH*PJ1!51!)*0R'!,5H$R*S',!J1RS!J1'!8*$'! m(8!*rr!8*$'h!*+'!$j/'+',.!!! 4/18/16 42

43 gjr8*7'!8*$'h! *H5,'!H$J8!"'*+'+!

44 FEATHER ZERO WINDING

45 SOLDERED JOINTS DEVELOPMENT. (1) d'!"*i'!h'r')8',!*!rj/!6'rp17!$j518!hjr,'+!/58"!p1!n! 05H6(8"!*RRJS.!!B8!)J6'H!51!*!R5U(5,!IJ+6j!!HJ!*!8"51!R*S'+! )*1!0'!*$$R5',!8J!8"'!8*$'.!?"'!o(H!5H!51)J+$J+*8',!51!8"'! R5U(5,!HJ!*!i'+S!8"51Ej!/'!!

46 MAGIC MAGNET SEXTUPLE DYNAMIC PASSIVE CORRECTION p5*6'8'+!=aa!66! d5+'!a._!66!?"5)e1'hh!ji!*hh'60rs!!-66!!?(+1!z$*)517!=!66! d58"!=a!(158h!ji!h'np$jr'!!8j!)j++')8!*8!-.>!?'hr*!!=_;!*+'!51,()',!8j!h"5'r,!j(8!'++j+h! D'+H5H8'18!qJ518j!!!

47 QUENCH ANALYSIS?'6$'+*8(+'!H'1HJ+H! 4/18/16 47

48 r`!+'$'*8!ji!r-!8j!tn!'r')8+5)*r!h"j+8!*8!)*0r'!'n58!! r=!z8z8!,(66s!)8,=a=^! r-!8'h8!51h8+(6'18*pj1!8'h8hj!!'r')8+5)*r!h"j+8! ro!!h8h8!,(66s!trr',!+'h51!y?p=a=l!8'h8!! r]!x?z!j!= H8!+'*R!8'H8!)J5R!

49 SQUARE WAVE SPOT HEATER AND POWER SUPPLY LABVIEW PROGRAMMABLE CURRENT PROFILE.

Accelerator Quality HTS Dipole Magnet Demonstrator Designs for the EuCARD-2, 5 Tesla 40 mm Clear Aperture Magnet

CERN-ACC-2015-0024 glyn.kirby@cern.ch Accelerator Quality HTS Dipole Magnet Demonstrator Designs for the EuCARD-2, 5 Tesla 40 mm Clear Aperture Magnet G. A. Kirby, J. van Nugteren, A. Ballarino, L. Bottura,