Magnetic measurements at room temperature on MCBRDP 1
Magnetic measurements at room temperature on MCBRDP 1 (D 2 corrector prototype) Lucio Fiscarelli WP 3 meeting, 12/09/2018
Up to now… Available measurements § First aperture of the short model at room temperature § Both apertures of the short model at cryogenic temperature § Both apertures of the prototype at room temperature
Measurement setup Rotating-coil sliding bench in bld. 927 Current limited to 0. 45 A Two different shafts § R = 30 mm, L = 1. 200 m § 3 positions cover the integral § R = 30 mm, L = 0. 130 m § 19 positions in total § 11 positions in the straight section Reference radius 35 mm
MCBRDP 1 at room temperature 1 I B 1 TF angle NCS 18. 7% 0. 4467 0. 877 0. 2045 AP 1 Center CS INTEGRAL 62. 7% 18. 7% 100. 0% 0. 4464 0. 4466 2. 944 0. 877 12. 672 0. 2105 0. 2137 0. 2100 NCS 18. 7% 0. 4465 -0. 876 -1. 3642 AP 2 Center CS INTEGRAL 62. 6% 18. 7% 100. 0% 0. 4463 -2. 942 -0. 878 -12. 675 -1. 3594 A m. T m A-1 rad § Field repeatable between the two apertures within 2 units § Perpendicularity in the order of 1. 5 mrad § Measured TF larger than calculations, a verification (current generator) is ongoing 4
MCBRDP 1 at room temperature 2 AP 1 NCS Center CS INTEGRAL bn 1. 37 -10. 13 0. 19 2. 57 -0. 04 -0. 96 0. 07 0. 31 0. 00 -0. 68 -0. 06 -9. 79 -11. 18 0. 07 2. 26 2. 10 0. 02 -0. 13 -0. 98 -1. 20 0. 01 -0. 02 0. 13 0. 42 0. 01 0. 19 -0. 18 -10. 11 0. 09 2. 29 -0. 02 -1. 02 0. 22 0. 04 2. 36 -9. 50 0. 49 2. 91 -0. 23 -0. 87 -0. 08 0. 17 -0. 09 -1. 09 -9. 20 0. 76 2. 72 -0. 04 -0. 81 0. 06 0. 15 -0. 02 1. 04 -8. 75 0. 85 2. 51 -0. 11 -0. 82 0. 04 0. 13 -0. 04 -0. 05 -9. 17 0. 73 2. 71 -0. 09 -0. 82 0. 03 0. 15 -0. 03 units n 2 3 4 5 6 7 8 9 10 NCS -22. 67 -3. 81 1. 40 0. 04 0. 34 0. 11 0. 21 0. 04 0. 11 0. 77 0. 09 0. 13 0. 34 0. 17 0. 05 0. 03 -0. 02 0. 01 25. 34 2. 36 -0. 61 0. 17 -0. 06 0. 09 0. 05 -0. 06 0. 05 0. 99 -0. 21 0. 23 0. 25 0. 16 0. 07 -0. 01 0. 04 units n 2 3 4 5 6 7 8 9 10 INTEGRAL AP 2 Center CS an 13. 07 -4. 41 -1. 33 -0. 28 -0. 53 -0. 08 0. 06 -0. 11 § -6. 34 -31. 48 -0. 59 2. 15 0. 06 1. 25 0. 33 -0. 26 -0. 28 0. 00 -0. 01 -0. 24 -0. 03 -0. 15 -0. 02 0. 41 -7. 41 -0. 79 0. 02 0. 17 -0. 31 -0. 02 -0. 06 0. 04 Allowed multipoles are larger than expected but field quality is within specifications 5
MCBRDP 1 at room temperature 3 AP 1 AP 2 6
Conclusions § Field is repeatable between apertures (~2 units) § Perpendicularity of apertures ~1. 5 mrad § Field quality within specs (<10 units) on both apertures § But b 3 (and allowed multipoles) larger than expected § To be investigated
Additional slides 8
MCBRDS 1 b at cryogenic temperature AP 1 vertical field newest-built aperture TF 1. 695 T m k. A-1 bn an 2 -4. 1 -2. 97 3 -3. 29 -0. 74 4 -0. 59 -0. 16 5 -1. 09 -0. 08 6 -0. 05 -0. 16 7 -0. 09 -0. 14 8 0. 01 -0. 05 9 -0. 06 -0. 03 10 -0. 03 -0. 02 at nominal field level and 1. 9 K units at 35 mm n AP 2 horizontal field first-built aperture TF 1. 698 T m k. A-1 bn an 2 -2. 05 1. 7 3 -2. 69 -0. 01 4 0. 35 1. 17 5 -1. 77 0. 23 6 0. 54 0. 23 7 0. 28 0. 09 8 0. 28 0. 05 9 0. 01 0. 05 10 0. 07 0. 01 at nominal field level and 1. 9 K units at 35 mm n 9
MCBRDS 1 b at cryogenic temperature TF = 1. 696 Tm k. A-1 AP 1 newest built (↕) Above nom.
MCBRDS 1 b at cryogenic temperature TF = 1. 699 Tm k. A-1 AP 2 first built (↔) Above nom.
MCBRDS 1 b at room temperature First-built aperture at room temperature 1 A n bn an 2 3. 34 3. 84 3 -7. 86 2. 24 4 -1. 07 1. 53 5 -0. 84 -0. 12 6 -0. 41 0. 45 7 0. 34 -0. 16 8 -0. 29 0. 14 9 0. 09 -0. 07 10 -0. 03 0. 17 12
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