Innovation with Integrity Bruker Energy & Supercon Technologies (BEST) EUCARD2 status by Bruker HTS...
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Innovation with Integrity
Bruker Energy & Supercon Technologies (BEST)EUCARD2 status by Bruker HTS (together with KIT) CERN-BHTS T-conference 31.08.2015
Bruker HTS 2
Outline
Critical currents in high fields: new UH Ic-s; BHTS commentsPlating of 32-36m tape with KIT meanderDog-boningGeneral status at Bruker HTS
Gustaaf Van TendelooAlexander Meledin,Uni Antwerpen
2CERN-BHTS Meeting , Alzenau, June 18, 2015
Bruker HTS 3
New HU data (summer 2015):
CERN-BHTS T-Conf., Aug 31, 2015
BHTS comments:Great results!!
- To check tape length in UH (it should be above 0.1 m)
- Alpha value seems to be above 1 (we have 0.88); this may reduce currents above 20T
Bruker HTS
EUCARD2: SS+Ag tapes recently punched by KIT
ConfidentialCERN-BHTS Meeting , Alzenau, June 18, 2015
Confidential
Bruker HTS
Additional protection of tape after punching at KIT
ConfidentialCERN-BHTS Meeting , Alzenau, June 18, 2015
Confidential
Two new defects were introduced to the 36m long tape: one from low-current end (delta x = 1.5 m from the end). Other defect was at distance 21 (?) m. Reason: errors in tape handling (not during plating step!)
Suppression of dog boning is implemented. This suppression is found to be dependent on quality of punching.
Bruker HTS 6
Progress in suppression of dog-boning:is important in case of meander-punched tapes
Cu thickness: 27µm in the middle38µm at the edge
Not ideal, but much better!
35 µm
ConfidentialCERN-BHTS Meeting , Alzenau, June 18, 2015
Confidential
Bruker HTS
EUCARD2: Highlights at Bruker HTS
CERN-BHTS Meeting , Alzenau, June 18, 2015
Innovation with Integrity
First 610m long tapes (w=4mm)processed in PLD600 (May-June 2015)
8 8
Confidential
Bruker HTS 9
Summary
• BHTS is transferred by 90% to new building.Installation works with equipment are in progress.Installation to be completed in October 2015.Fine tuning of process parameters: November 2015
• New equipment for 12 mm tape is ordered in the end of August. New PLD300 will be assembled in November 2015; will be put in operation in the beginning of 2016.
Works on alternative processing sequence is successfully accomplished by KIT and BHTS. Additional protection of tape after punching is developed. 36 (?)m long tape is processed with minor problems (not by plating!)
Suppression of dog boning is implemented. This suppression is found to be dependent on quality of punching.
ConfidentialCERN-BHTS Meeting , Alzenau, June 18, 2015
Innovation with Integrity
Copyright © 2014 Bruker Corporation. All rights reserved. www.bruker.com
Bruker HTS
Supporting foils:
CERN-BHTS Meeting , Alzenau, June 18, 2015
Bruker HTS 12
Progress in length up-scale
0 100 200 300 400 500 600 7000
100
200
300
400
500
600
Length of 4mm wide tape, m
Crit
ical
cur
rent
in 4
mm
wid
e ta
pe a
t 4.2
K, 1
8T, B
ǁc
[A]
highest Ic
production level Ic
Jul-A
ug 2
014,
15
pcs
Dec
201
4, 2
pcs
Feb
201
4, 3
pcs
2010: record Ic in 6m
2014: record Ic in 22m
goal of 2015: 600m +
production: 2km in 2 months
PLD2 (250m) PLD600
highest Ic: short samples
in m
ain
case
s, Ic
-s
are
re-
calc
ulat
ed fr
om Ic
-s a
t 5T
CERN-BHTS Meeting , Alzenau, June 18, 2015
Confidential