FIDEL meeting 22/02/07 - Stephane Sanfilippo AT-MTM

Status of data retrieval(SSS and S4 tested in SM18).

Data retrieval : goals, agenda.

Procedure of data treatment and validation

Status of the data treatment (20/02/07).

FIDEL meeting 22/02/07 - Stephane Sanfilippo AT-MTM

Number of quadrupoles to be treated.

MQ: 28 MQ (transfer function, multipoles).

MQM : 4 MQM (transfer function, multipoles) The other MQM were measured in Block 4 and treated by W.Venturini.

MQY : 12 MQY (transfer function, multipoles) MQY measured in Block 4 will be treated by W.Venturini.

MQTL (Q6): 1 measured completely in SM18.

45 magnets to be treated in total.

FIDEL meeting 22/02/07 - Stephane Sanfilippo AT-MTM

What we will get after the retrieval. 4 reference tables corrected and entered in the SMA web site.

Transfer function: TF for currents between injection and nominal in ramp up and ramp down (systematic correction with SSW measurements)

Integrated harmonics: Integrated strength and multipoles between injection and nominal in ramp up and ramp down.

Integrated components: Geometric, saturation, magnetization, hysteresis, decay (when it is measured).

Variation of the b2 and multipoles with time during the reference machine cycle (format table integral_harmonic)

Agenda For MQ in arc SSS : ready end of February. For MQY and MQM : ready end of March.

FIDEL meeting 22/02/07 - Stephane Sanfilippo AT-MTM

Cleaning procedure. Re-analysis of the raw data coming from machine cycle and load-line.

Transfer function Check/correct the offset based on SSW measurements Correct jumps in transfer function along the loadline in particular around 2000-3000 A Add the ramp down YF=f(I).

Angles Introduction of the Mag_fid angle measured with the SSW (table provided by Marco Buzio)

Harmonics Add the multipoles as a function of the current (ramp up and down)

Multipoles components Check of the components Ramp rate effect added when measured Decay file prepared (variation of the b2 and multipoles with the current for the reference

cycle).

Final checks Creation of a log file including offsets, angles, comments.

FIDEL meeting 22/02/07 - Stephane Sanfilippo AT-MTM

Transfer function correction :extreme case.Transfer function

0.9890

0.9900

0.9910

0.9920

0.9930

0.9940

0.9950

0.9960

0 2000 4000 6000 8000 10000 12000Current (A)

T (

T/m

/kA

)

ap 1ap 2

Raw data Strength correction based on SSW cross-check+ jump at low current corrected.

Correction confirmed by another measurement with re-calibrated amplifiers

Transfer function

0.9915

0.9920

0.9925

0.9930

0.9935

0.9940

0.9945

0 2000 4000 6000 8000 10000 12000Current (A)

T (

T/m

/kA

)

ap 1ap 2

Criteria : Correction performed when the jump is higher than 1 unit.

FIDEL meeting 22/02/07 - Stephane Sanfilippo AT-MTM

Status of the MQ, MQM, MQY treatment. MQ: 16 treated/ 28 the 20/02/07.

No MQM and MQY for the moment.

Second run of checking is needed at the end.