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Magnetic Measurements of MQW(B-A) [unit 10]

Magnetic Measurements of MQW(B-A) [unit 10]. M. Buzio , R. Chritin , J . Dutour , J. Garcia TE-MSC-MM. Generalities. purpose: FIDEL model refinement considering the most recent definition of LHC powering cycles Setup: spare MQW10 in bdlg . 867 – SSW (step 17 mm)

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Magnetic Measurements of MQW(B-A) [unit 10]

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  1. Magnetic Measurements of MQW(B-A) [unit 10] M. Buzio, R. Chritin, J. Dutour, J. Garcia TE-MSC-MM

  2. Generalities • purpose: FIDEL model refinement considering the most recent definition of LHC powering cycles • Setup: spare MQW10 in bdlg. 867 – SSW (step 17 mm) • Main differences w.r.t. the 2004/2006 series test campaigns: • magnetization cycles must be done before the measurements to ensure the stability of the hysteresis cycle • measurements useful for the FIDEL model are done on the increasing current branch • Notes: • measurements on the decreasing current branch done to evaluate the width of the hysteresis loop (~ error of the series measurements). Not all points taken on the up branch need to be repeated (esp. in the central linear part)

  3. 2010 Program • MQWA & MQWB Configurations • Precycles : • 4 times 0 A-> +600 A -> -600 A -> 0 A [MQWB Ap1&2] • 4 times 0 A-> +710 A -> 0 A [MQWA Ap1] • 4 times 20 A-> +710 A -> 20 A [MQWA Ap1] • 4 times 30 A-> +710 A -> 30 A [MQWA Ap1] • 4 times 35 A-> +710 A -> 35 A [MQWA Ap1] • Measures (2 per series due to good reproducibility) : • 1,2,5,10,15,20,27,40,100,200,312,437,600 [MQWB Ap1&2] • 30,35, 38,40, 70,100, 200, 400,500, 561,610,710 [MQWA Ap1] • To come MQWA Ap2 (today) and then repeat everything for another spare magnet

  4. 2010 SSW Measurement Program

  5. Some remarks • Aperture 2 for MQWA to be done today • Then repeat measurements on another magnet • MQWB measurements looks similar to the 2009 campaign

  6. MQWB Ap1&2

  7. MQWA Ap1

  8. MQWB-Ap1 Pre-cycle 0->+600->-600->0

  9. MQWB-Ap2 Pre-cycle 0->+600->-600->0

  10. MQWA-Ap1 Pre-cycle 0->+710->0

  11. MQWA-Ap1 Pre-cycle 20->+710->0

  12. MQWB-Ap1 Pre-cycle 30->+710->0

  13. MQWB-Ap1 Pre-cycle 35->+710->35

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