wiki:Research/Instrumentation/IonAcoustic/PrelimData

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 particle entry time 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


Last modified 4 months ago Last modified on Aug 10, 2021 4:23:15 PM

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