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CALs

distances

IMPORTANT

NOTE:1

. Consider

that

each

CsI

crystals

has

a

wrapper

around

0.75mm

thick.

This

wrapper

thickness

must

be

subtracted

to

have

the

exact

distances.

Hext

(CsI

layer

height)=21.34mm

Hint

(CsI

crystal

height)=19.9mm

DH=Hext

-

Hint=1.44mm

-->

wrapper

thickness=0.72mm

 
2. At each crystal end there are both gap and endcap.
The gap+endcap length is around 6mm (the length is variable reffering to NLR drawings, link below)

Lext (CsI layer length)=338mm

Lint (CsI crystal length)=226mm

DL=Lext - Lint=12mm --> gap+endcap length=6mm