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c).
By rotating the V.STAT magnet clockwise, the red, green and
blue dots move in the direction indicated below.
d).
By opening or closing the V.STAT magnet, the red, green and
blue dots move in the direction indicated below.
Note :
If the blue dot does not coincide with the red and
green points correct the points by using the BMC
[Hexapole] magnet.
5.
Correction for HMC [horizontal mis-convergence] and
VMC [vertical mis-convergence] by using the BMC
[Hexapole] magnet.
a).
HMC correction by BMC [Hexapole] magnet and movement
of the electron beam.
HMC correction(A)
A < B
R G
B
A = B
R G B
b).
VMC correction by BMC [Hexapole] magnet and movement
of the electron beam.
VM C c o rr e c t i o n ( A)
C < D
C = D
R
R
C
C
G
G
D
D
B
B
B
G
R
R
B
G
G
R
B
HMC correction(B)
A > B
R
A = B
R G B
VMC co rr e ctio n( B)
C > D
C = D
R
R
G
G
B
B
HAMP
6.
HTIL correction can be performed by adding a THL correction
ASSY to the DY.
TLH correction Assy
HTIL
G B
21
4-057-714-01
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