Review of tests of superconducting magnets in SM18 - Stephane Sanfilippo AT-MTM-AS

Field Quality of MQ.

Measured in SM18

Presented by: Stephane Sanfilippo

AT-MTM-AS

Review of tests of superconducting magnets in SM18 - Stephane Sanfilippo AT-MTM-AS

What we measured so far. 49 arc SSS tested at cold. Field strength :48 MQ measured :

7 MQ measured with the scanner (rotating coils). 40 MQ measured with the SSW system. Analysis performed on 21 MQ.

Field Quality (multipoles) :16 MQ’s magnets cold tested in the SSS. 15 X-section 1+1 X-section 2

Review of tests of superconducting magnets in SM18 - Stephane Sanfilippo AT-MTM-AS

Warm/cold correlation status (MQ).

Offset of~17 units between the two systems.scanner not properly calibrated ?

MQ 120 (X section-2) out of the correlation.

W/C correlation for strength not validated for the MQ.Standard measurements (shaft + SSW) have to be maintained for MQ ‘s in the SSS until

validation.

w/c~5 units (SSW)

w/c~3 units (scanner)

(established at nominal current)

58.1

58.2

58.3

58.4

58.5

58 58.1 58.2 58.3 58.4

warm TF (T / kA)

cold

TF

(T

/ kA

)

SSW

17 units

MQ66?

MQ60?

MQ120?

MQ56?

Scanner (rotating coil)

45 units

Review of tests of superconducting magnets in SM18 - Stephane Sanfilippo AT-MTM-AS

Warm/cold correlation status (MQ).

-5

0

5

10

-5 0 5 10

warm b6- units @ 17 mm

cold

b6 (

unit

s @

17 m

m)

injectionnominal

MQ 120

MQ 120 (X section-2) out of the correlation.+2.3 units of difference.

Nominal : Offset of -0.34 units. w/c~0.22 unitsInjection : Offset of -3.8 units. w/c~0.33 units

-1

-0.8

-0.6

-0.4

-0.2

0

0.2

0.4

0.6

0.8

1

-1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1

warm b4- units @ 17 mm

cold

b4

(unit

s @

17

mm

)

injection

Offset of -0.3 units. w/c~0.36 units

b6 b4