Action-kick sensitivity to HGQ field errors at collision (R0 = 22 mm):

Multipole 	|\Delta J/J\right| (10^{-3}) 
b_3/a_3		2.16
b_4/a_4		1.58
b_5/a_5		1.16
b_6/a_6		0.85
b_7/a_7		0.63
b_8/a_8		0.46
b_9/a_9		0.34
b_10/a_10	0.25

1. 1 unit (@2.2 cm) multipole error on one (Q2A$+$Q2B) quad set

2. beta*=0.5 m; 11 sigma amplitude with zero crossing angle