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