Calibration and operational checks for CPCs.

CPC calibration includes:

• the check of the main operational parameters (flows, temperatures, laser current, etc.),

• measurement of CPC counting efficiency (3-40 nm),

• check/adjustment of CPC cut-off diameter (10 nm for ACTRIS),

• measurement of CPC output linearity (1 000 - 50 000 #/ccm).

Training of operators for correct set-up and operation and basic maintenance of the CPCs. 

PACC is a new unit of CAIS-ECAC, but the hosting laboratory at ICPF CAS has a long lasting history in these measurements and is fully harmonized with WCCAP (TROPOS, Leipzig, Germany).