CITYFLUX – Filter Sample (J Floor)
A B C D
A Foam damage
a b c 10um
a b c b a c
before after
Foam damage
A B C D
B
Foam damage in progress – 3 images taken over 20 seconds
a b c
a b c a b c
Images after Foam damage
A B C D
a b c d C
a b c d
Images after
A B C D
D 1 2 3
a b c 1
Foam damage – images taken over 15 seconds
a b c a b c
Image before/after Before After
D 1 2 3
2 a b c d e 2
a b c d e e d b c a
Particle flipped over Damage by beam Before After
D 1 2 3
a b c d f e 3
a b c d f e ba c e d f
After image
Overview after investigation, Extensive beam damage
Particle sizes: All less than ~10um, most <2um Particle Composition – Carbon or silicate material