( ( With ( the ( existing ( magnet arrangement ) ) ) ) ( , ( ( ( a decrease ) ( of ( ( the emittance ) ( by ( ( a factor ) ( of two ) ) ) ) ) ) ( ( has ( been ( achieved ( by ( changing ( the ( quadrupole strengths ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN With) (NP (DT the) (VBG existing) (NN magnet) (NN arrangement))) (, ,) (NP (NP (DT a) (NN decrease)) (PP (IN of) (NP (NP (DT the) (NN emittance)) (PP (IN by) (NP (NP (DT a) (NN factor)) (PP (IN of) (NP (CD two)))))))) (VP (VBZ has) (VP (VBN been) (VP (VBN achieved) (PP (IN by) (S (VP (VBG changing) (NP (DT the) (JJ quadrupole) (NNS strengths)))))))) (. .)))
With the existing magnet arrangement, a decrease of the emittance by a factor of two has been achieved by changing the quadrupole strengths.
(ROOT (S (S (VP (VBG Increasing) (NP (NP (DT the) (NN distance)) (PP (IN between) (NP (DT the) (CD two) (NNS magnets)))))) (VP (MD will) (VP (VB cause) (NP (DT a) (NN decrease)) (PP (IN in) (NP (NP (DT the) (NN force)) (PP (IN of) (NP (NP (NN attraction)) (PP (IN between) (NP (CD two) (NNS magnets))))))))) (. .)))
Increasing the distance between the two magnets will cause a decrease in the force of attraction between two magnets.