PPT Slide

Summary table:

(Data are approximate. QLHCb_total = estimate for the full vertex detector, i.e. both halves.)

Item Outgassing rate of item QLHCb_total

[mbar l s -1]

Kapton foil, after 40 hrs pumping 1 E-7 mbar l s -1 cm-2 n/a

sample Kapton flat cable QPI 3 E-5 mbar l s -1 130 E-4

male/female pair of PEEK D-type 25-pin connectors 6 E-6 mbar l s -1 / pair 50 E-4

male/female pair of stand. D-type 25-pin connectors 1 E-5 mbar l s -1 / pair 100 E-4

Liverpool carbon-fiber Si support 1 E-8 mbar l s -1 cm-2 ~ 1 E-4

Outgassing measurements

Continue: measure all unknown outgassing rates of components in a detector station