Preliminary data sets

Data sets generated for the initial evaluation of the ion-acoustic response of beams consisting of 10⁴ particles entering a 30cm x 30cm x 30cm water phantom.

Parameter	Definition
X-position	Mean initial position about which the particles are distributed on the x-axis (horizontal)
Y-position	Mean initial position about which the particles are distributed on the y-axis (vertical)
Normalised x-momentum	Mean initial x-component of momentum, normalised with respect to the total particle momentum of particles
Normalised y-momentum	Mean initial y-component of momentum, normalised with respect to the total particle momentum of particles
Energies	Mean initial mean particle energy
Temporal spread	Mean initial time particle enters the phantom relative to time = 0

Each "batch" refers to a group of runs which vary one parameter or the distribution of a parameter. For example, Batch 1 varies the mean initial energy of particles entering the phantom.

The "input file" specifies the initial positions and momenta of particles and should be read as:

x-position [mm] | normalised x-momentum | y-position [mm] | normalised y-momentum | particle energy [MeV] | particle entry time [mm] |

The "output file" gives a complete history of energy depositions due to the 10⁴ particles as they travel through the phantom. Each initial particle is assigned an EventNum between 0 and 9999. At each point where the particle (or a derivative particle radiated as a result of energy deposit of the initial particle) deposits energy as it travels in the phantom, the total energy deposit and the x- y- and z-position of this deposit is recorded. The Global Time at which the particle deposits the energy is recorded, relative to t = 0 when the first particle enters. Delta time refers to the time step between this energy deposit and the previous deposit by this particle. Particle Name specifies the type of particle responsible for this deposit. The header row of these files denote the meaning of each column.

Batch 1

Parameter	Mean value	Distribution
X-position [mm]	0	None
Y-position [mm]	0	None
Normalised x-momentum	0	None
Normalised y-momentum	0	None
Energies [MeV]	Varied	None
Temporal spread [ms]	0	None

Energy [MeV]	Input file	Output	Comment
10	10.dat	waterhits_10.dat
20	20.dat	waterhits_20.dat
40	40.dat	waterhits_40.dat
80	80.dat	waterhits_80.dat
160	160.dat	waterhits_160.dat
200	200.dat	waterhits_200.dat

Batch 2

Parameter	Mean value	Distribution
X-position [mm]	0	None
Y-position [mm]	0	None
Normalised x-momentum	0	Parabolic - varied
Normalised y-momentum	0	Parabolic - varied
Energies [MeV]	200	None
Temporal spread [ms]	0	None

Normalised x-y momentum spread standard deviation [mm]	Input file	Output	Comment
1	200_+_mo_spread_1.dat	mo_spread_1.dat
2	200_+_mo_spread_2.dat	mo_spread_2.dat
4	200_+_mo_spread_4.dat	mo_spread_4.dat
8	200_+_mo_spread_8.dat	mo_spread_8.dat
10	200_+_mo_spread_10.dat	mo_spread_10.dat

Batch 3

Parameter	Mean value	Distribution
X-position [mm]	0	None
Y-position [mm]	0	None
Normalised x-momentum	0	None
Normalised y-momentum	0	None
Energies [MeV]	200	None
Temporal spread [ms]	0	Gaussian - varied

Temporal spread standard deviation [ms]	Input file	Output	Comment
1	200_+_time_spread_1ms.dat	time_spread_1ms.dat
2	200_+_time_spread_2ms.dat	time_spread_2ms.dat
4	200_+_time_spread_4ms.dat	time_spread_4ms.dat
8	200_+_time_spread_8ms.dat	time_spread_8ms.dat
10	200_+_time_spread_10ms.dat	time_spread_10ms.dat

Batch 4

Parameter	Mean value	Distribution
x-position [mm]	0	None
y-position [mm]	0	None
normalised x-momentum	0	None
normalised y-momentum	0	None
energies [MeV]	200	Gaussian - varied
temporal spread [ms]	0	None

Energy spread standard deviation [mm]	Input file	Output	Comment
1%	200_+_energy_spread_1%.dat	energy_spread_1.dat
2%	200_+_energy_spread_2.dat	energy_spread_2.dat
3%	200_+_energy_spread_3%.dat	energy_spread_3%.dat
4%	200_+_energy_spread_4%.dat	energy_spread_4%.dat
5%	200_+_energy_spread_5%.dat	energy_spread_5%.dat

Batch 5

Parameter	Mean value	Distribution
X-position [mm]	0	Parabolic - varied
Y-position [mm]	0	Parabolic - varied
Normalised x-momentum	0	None
Normalised y-momentum	0	None
Energies [MeV]	200	None
Temporal spread [ms]	0	None

Position spread standard deviation [mm]	Input file	Output	Comment
1	200_+_pos_spread_1mm.dat	pos_spread_1mm.dat
2	200_+_pos_spread_2mm.dat	pos_spread_2mm.dat
4	200_+_pos_spread_4mm.dat	pos_spread_4mm.dat
8	200_+_pos_spread_8mm.dat	pos_spread_8mm.dat
10	200_+_pos_spread_10mm.dat	pos_spread_10mm.dat