[Primexd] CCAL is in the neutral shower factory

[Igal Jaegle]

Hello, PrimEXDeurs,

My implementation of the CCAL into the neutral shower factory has been approved and merged by Sean into the master branch. Please test it and report to me any bugs you might find. For the RF bunch calculation, the calorimeter-only calculation implemented and strongly suggested by Sean is used. Please note that I did not yet finish to calculate the covariance matrix error for CCAL so the kinematic fit will not give reliable results but you can use in the meantime the reaction filter without doing a kinematic fit.

Example for:
 1/Compton, a e- -> a e-
Reaction1 1_3__1_1
Reaction1:Flags B4_F0_U1

Enclosed a figure showing that the CCAL inclusion into the shower factory is working with a PrimEX-D data sub-run of last year. As, there was no B-field, all tracks are assigned by default a positive charge and it is also not clear if the track fitter is working properly in such conditions. So, the single Compton process has to be computed as followed: gamma + e- -> gamma gamma for the reaction filter. The random background has not been subtracted.

 2/Eta, a He4 -> eta He4
Reaction1 1_47__17_m47
Reaction1:Flags B4_F0_U1

tks ig.

PS: the skimmers will be ready for testing in the coming days.

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