Only the gas volume is now simulated. This removed the vertex position distribution issue. WARNING: The mylar windows are not simulated now so the beam energyentering the gas volume should be the beam energy after the mylar window.

(event type, interstrip, hit pattern)

condition on multiplicity 1

getters)
Add control spectra
Add online spectra
Change DSSSD configuration (sigma, cal threshold)

DSSSD calibration with pedestal

        - Backward silicon from Julien Lory(LPC) design
        - Forward MUST2 from MUGAST G1 design by E. Rindel

* adding Ex to NucleusB in QFS simulation

Add calibration directory for DSSSD analysis
Code modifications for DSSSD analysis