{
"simulation" : !note
{
    "nodes" : [32,1], 
    "indx" : 8,
    "indy" : 8,
    "indz" : 8,
    "box" : {
        "x" : [-6.0,6.0],
        "y" : [-6.0,6.0],
        "z" : [0,10.0]},
    "boundary" : "conducting",
    "n0" : 7.0e14,
    "time" : 100.1,
    "dt" : 100.0,
    "nbeams" : 1e6,
    "nspecies" : 1,
    "dump_restart" : false,
    "ndump_restart" : 1,
    "read_restart" : false,
    "restart_timestep" : 1,
    "iter" : 1,
    "verbose" : 0
},

"beam" :
[
    {
    "evolution" : true,
    "profile" : 0,
    "np" : [64,64,128],
    "npmax" : 4000000,
    "q" : 1.0,
    "m" : 1836.0,
    "gamma" : 426,
    "peak_density" : 0.0056,
    "quiet_start" : true,
    "center" : [0.0,0.0,0.0],
    "sigma" : [1.0,1.0,1.57],
    "sigma_v" : [0.0,0.0,426.0],
    "centroid_x" : [0.0,0.0,0.0],
    "centroid_y" : [0.0,0.0,0.0],
    "diag" :
    [
        {
        "name" : ["charge"],
        "ndump" : 1
        },
        {
        "name" : ["charge"],
        "ndump" : 1,
        "slice" : [["xz", 129],["yz",129],["xy",20]]
        },
        {
        "name" : ["raw"],
        "ndump" : 1,
        "sample" : 10
        }
    ]    
    },

   {
    "evolution" : true,
    "profile" : 0,
    "np" : [64,64,128],
    "npmax" : 4000000,
    "q" : 1.0,
    "m" : 1836.0,
    "gamma" : 426,
    "peak_density" : 0.0056,
    "quiet_start" : true,
    "center" : [0.0,0.0,6.28],
    "sigma" : [1.0,1.0,1.57],
    "sigma_v" : [0.0,0.0,426.0],
    "centroid_x" : [0.0,0.0,0.0],
    "centroid_y" : [0.0,0.0,0.0],
    "diag" :
    [
        {
        "name" : ["charge"],
        "ndump" : 1
        },
        {
        "name" : ["charge"],
        "ndump" : 1,
        "slice" : [["xz", 129],["yz",129],["xy",20]]
        },
        {
        "name" : ["raw"],
        "ndump" : 1,
        "sample" : 10
        }
    ]    
    }
],

"species" :
[
    {
    "profile" : 0,
    "ppc" : [2,2],
    "q" : -1.0,
    "m" : 1.0,
    "density" : 1.0,
    "longitudinal_profile" : "uniform",
    "piecewise_density" : [1.0,1.5,2.5],
    "piecewise_s" : [0.0,100.0,200.0],
    "diag" :
    [
        {
        "name" : ["charge", "jx"],
        "ndump" : 1
        },
        {
        "name" : ["charge"],
        "ndump" : 1,
        "slice" : [["xz", 129],["yz",129]]
        }
    ]    
    },

 {
    "profile" : 0,
    "ppc" : [2,2],
    "q" : 1.0,
    "m" : 570000.0,
    "density" : 1.0,
    "longitudinal_profile" : "uniform",
    "piecewise_density" : [1.0,1.5,2.5],
    "piecewise_s" : [0.0,100.0,200.0],
    "diag" :
    [
        {
        "name" : ["charge", "jx"],
        "ndump" : 1
        },
        {
        "name" : ["charge"],
        "ndump" : 1,
        "slice" : [["xz", 129],["yz",129]]
        }
    ]    
    }
],

"field" :
{
    "diag" :
    [
        {
        "name" : ["ex","ez"],
        "ndump" : 1
        },
        {
        "name" : ["ex","by","ez","psi","vpotx","vpoty","vpotz"],
        "ndump" : 1,
        "slice" : [["xz", 129],["yz", 129]]
        }
    ]    
    
}
}