"Static" steering correction on the DB Quadrupoles
"Static" steering correction on the DB Quadrupoles. Alexey Vorozhtsov 14 Dec 2010. DB QUAD parameters. Steerer for DBQ. Quadrupole coil. Steerer coil. Opera 2D 180deg model Quadrupole only , IW=4900[A], -for nominal ∫ Gdz =12.18[T].
"Static" steering correction on the DB Quadrupoles
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"Static" steering correction on the DB Quadrupoles Alexey Vorozhtsov 14 Dec 2010
DB QUAD parameters Alexey Vorozhtsov
Steerer for DBQ Quadrupole coil Steerer coil
Opera 2D 180deg modelQuadrupole only, IW=4900[A], -for nominal ∫Gdz=12.18[T]
Opera 2D 180deg modelCorrector only, IW=600[A], B1=0.062[T], ∫Bdz=12[mTm] • Field error =50% at GFR=11[mm] • Sextupole component B3 w.r.t. B1(main): B3/B1=50%
Opera 2D 180deg modelQuadrupole +Corrector, IwCorr=600[A], IwQuad=4900[A] Non symmetrical field distribution(Iron saturation) Non symmetrical field distribution(Iron saturation) • Non symmetrical field distribution due to the iron saturation. • Dipole field decreased from 0.062T to 0.045[T] (Iron saturation) • Full spectrum of “forbidden” harmonics in quadrupole : B3,B5…
Opera 2D 180deg model Quadrupole +Corrector, IwCorr=60[A], IwQuad=430[A] (10% of nominal)