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    mode picture

    How to get results. Software ModeRTL

    Software of RT-Office have intuitive user-friendly interface for entering of input data.
    The features of interface are as follows:

    1. Detailed decomposition of input data for main elements of source and target (including spectral characteristics for irradiation source).

    2. Two levels for entering of input data via configuration files or manually.

    3. Expert control for the range of input data and coordination for the set of geometrical and physical input data.

    4. Compatibility of export an input data to different modules.

    Software of RT-Office for simulation EB and X-ray processing have the unified interfaces for enter of input data for "EB source", "EB scanner" and "X-ray converter".

    Enter of input data for "EB source" and "EB scanner" will be demonstrated on example of software ModeRTL.
    Enter of input data for "X-ray converter" will be demonstrated on example of software ModeSXR.

    Enter of input data for "Irradiated target" will be demonstrated on example of software ModeRTL, ModePEB, ModeCEB, and ModeSXR.

    1. EB Source


    Fig.1.1. Main form of the Software ModeRTL

    Software ModeRTL

    Software ModeRTL consists of five thematic modules and service blocks. (See Fig.4.1).

    • Analytic module is intended for fast analytic estimations of the absorbed dose distributions in target irradiated with scanned electron beam (EB) on moving conveyer.

    • "Monte Carlo" (MC) simulation module is intended for exact calculations of absorbed dose and charge distributions in target irradiated with scanned electron beam (EB) on moving conveyer.

    • Temperature module is intended for analysis of the temperature fields during cooling of irradiated volume.

    • Comparison module is intended for scientific analysis and comparison calculated and prepared experimental data.

    • Dosimetry module is intended for preparing of experimental data This block allows to load data files, invert and move each experimental curve, cut and scale, transform to format of Comparison module.

    To work with software ModeRTL -

    • Click the "File", then "Open configuration", then select "Irradiating system" and load the file "Test.rts".

    • Click the "File" then "Open configuration", then select , "Irradiated target" an load the file "Test.rtt". (See Fig.1.2)

    Fig.1.2. Frames "Open configuration"

    Source. Monte Carlo simulation module.

    • Click "Source" in the Scheme of MC Module. See Fig. 1.3.
      The form for Source with electron accelerator parameters appear. See Fig. 1.4.

    Fig. 1.3. Scheme of MC Module.

    Fig. 1.4. The form of "Source" for input data and correction of an electron beam parameters.

    Beam current

    The frame Beam current consist of some fields.
    There are two regimes for input data: "Pulsed regime" and "Average current".

    • Click the "Pulsed regime" by a tick, to work with Pulsed regime data.

    • Enter the values Impulse current in Ampere (A), Impulse time in mSec, Repetition
      frequency in Hz.

    • Delete a tick from window "Pulsed regime", to work with "Average current" mode.

    • Enter the value of Average current in mA.

    EB energy spectrum

    Fields for EB energy are placed into the frame Spectrum.

    • Click the field "MonoEnergy" with a tick, to work with Mono Energy mode.

    • Enter a value of the Energy in MeV.

    • Click the field "Spectrum" with a tick, to work with EB energy spectrum mode.

    • Enter a rows number in the table, Click button "Correct table".

    • Enter or edit table data.

    Angular spread

    • Click the field MonoDirect by a tick, to work with MonoDirect mode.

    • Click the field Angular spread by a tick, to work with Angular spread mode.

    • Enter a rows number in the table, Click button "Correct table".

    • Enter or edit table data for the beam angle spread.

    You work with this table by analogy with the table of EB energy spectrum.

    Space spread

    • Click the field "Point beam" by a tick, to work with Point beam mode.

    • Click the field "Distributive beam" by a tick, to work with space spread mode.

    • Enter data of Beam diameter in cm and Full width on half maximum in cm.

    • Click the button "Save data and close this window".

    2. Scanner and Conveyer

    • Click "Scan" in the Scheme of Monte Carlo Module. See Fig. 1.3.
      The form for Scanner and Conveyer parameters appear. See Fig. 1.5.

    • Enter values of Speed in cm/sec, Width in cm in the frame Conveyer.

    • Enter values of Frequency in Hz, scan horn Height in cm in the frame Scanning horn.
    Fig. 1.5. The form for the Scanner and Conveyer parameters.

    • Enter values of Distance scan-conveyor in cm and Width of scanning in cm in the frame Geometry.

    • Values of fields Y angle of target and X angle of target depend on a chosen regime of scanning.
      (X and Y angles – angles of target orientations).

    You have possibility to choose four Regimes of scanning.

    • In the case of work with scan mode "Non-diverging beam" you can enter a value either Y angle of target or X angle of target.

    • If Y angle of target greater than 0, X angle of target = 0 and inaccessible.

    • In the case of work with scan mode "Triangular scanning" you can enter a value X angle of target only.

    • Click the field "Non-divergent beam" by a tick, to work with parallel ray scanned EB. The target will be irradiated with non-divergent scanned electron beam.

    • Click the field "Triangular scanning" by a tick, to work with triangular scanned electron beam.
      The target will be irradiated with triangular scanned electron beam.

    • Click the window "Default mode" by a tick, to work with linear time-current curve in scan magnet (saw-tooth form of current).

    • Click the window "Custom mode" by a tick, to work with the nonlinear time-current curve.

    • Enter a rows number of the table.

    • Click the button "Correct table" and work as well as with tables for an electrons source. The values of time and current are dimensionless.

    • Click the button "Save data and close this window".

    3. Parameters for Analytical calculation model

    • Click the button "DATA" in Analytic module. See Fig. 4.1. The form for entering of input data for EB source parameters and irradiated target characteristics will be opened. See Fig. 1.6.

    Fig. 1.6. The form for enter of input data for EB source parameters and irradiated target characteristics in the Analytic module.

    EB Source parameters

    • Enter the Beam current in mA.

    • Enter the Energy in MeV.

    • Enter a value of the Energy spread in MeV.

    • Enter a value of the Angle spread in degree.

    Scan and conveyer parameters

    • Enter the Scan Frequency in Hz.

    • Enter a value of the Maximal Angle in degree.

    • Enter the Width of scanning in cm.

    • Enter the Moving rate of conveyer system in cm/sec.

    Target and cover characteristics

    • Enter the Width and thickness of the target in cm.

    • Enter the Cover thickness in g/cm2.

    • Enter the target material density in g/cm3.

    • Click the "List of materials" with a tick.

    • Select a material for the "Target" from the "List of materials". The atomic number Z and the atomic weight A of the material appear in the corresponding boxes.

    • Click the "Mean values" with a tick
    • .
    • Enter the mean values of atomic number Z and the atomic weight A for materials (compounds and mixtures) not given in the " List of material".

    • Module Analytic provides a loading of saved data from the MC module.

    • To do it, Click the button "Load data from MC block" .
    • After loading all input data in Analytic module,
      Click the button "Save data and close this window".

    • Click the button "Calculation", to obtain analytic calculation results.

    4. Parameters of irradiated product

    4.1. Simple 2D Model

    • Click "Target" in the Scheme of MC Module. (See Fig. 4.3. Software ModeRTL).
      The form for entering of input data for irradiated Irradiation object (Target) and Cover (Packing materials) appear (See Fig. 1.9).

    • Figs. 1. 9 (a), (b), (c), and (d) in 3.3.2. chapter demonstrate the different models for irradiated target within package which are used by the ModeRTL program for simulation EB processing.

    Fig. 1.9. The form for enter of input data of irradiated Target (Irradiation object) and Packing materials (Cover).

    • The target on a conveyer line was represented as a parallelepiped unlimited on length along of the conveyer motion (axis Z). EB scans along axis Y.

    • The material of the target is homogeneous.

    • The target can be located on the conveyer platform with/without packing box.

    • The target on moving conveyer can be oriented in parallel or under arbitrary angle in respect to electron beam axis.

    Input data for Target size and Target materials

    • Enter the "Width of target" in cm (left up corner in the "Target" frame) (See Fig. 1.9).

    • Enter the "Thickness" in cm.

    • Enter the "Density of materials" in g/cm3.

    • Select a material for the "Target" from the "List of material" (right up corner in the "Target" frame). The atomic number Z and the atomic weight W of the material appear in the corresponding boxes.

    • Select the button "Another material" for materials not given in the " List of material".

    • Enter the values of Z and W for another material.

    • To enter the values of Z and W for compounds and mixtures, Click the window "Table" (right up corner in the "Target" frame) (See Fig. 1.9). The frame "Correct table for object" will be opened (See Fig. 1.10).

    • Enter the necessary number N constituent elements for compounds and mixtures in window "Rows".

    • Click the button "Correct table for object". The table with N rows appear.

    Fig. 1.10. Frame "Correct table for object"

    • Enter the atomic number Zi and the atomic weight Wi for ith constituent elements.

    Input data for cover size and cover materials

    • Enter characteristics for the "Cover Box": "Cover thickness" in cm, Additional cover thickness" in cm, and "Density of cover materials" in g/cm3.
      Note. In the case of cover thickness = 0, the target has not a Cover Box.

    • Select a material for cover materials from the "List of material" (right down corner in the "Target" frame). The atomic number Z and the atomic weight W of the material appear in the corresponding boxes.

    • Enter the values of Z and W for materials not given in the " List of material".
      The selection button changes to "Another material".

    • Target can be irradiated with incident EB beam either in closed or open
      (Click the window "Opened cover") Cover Box. (See Fig. 1.9).

    • Click the button "Save data and close this window".

    5. Representation of simulation results

    5.1. Built-in tools for representation of simulation results

    Representation of results simulation for absorbed dose distributions and their analysis are unified for all simulation modules of the RT-Office. The features of all simulation modules of the RT-Office are the presence of the built-in tools for representation and analysis of simulation results such as follows:

    • Presentation of physical and operational characteristics for radiation processing.

    • Cognitive visualization of results simulation.

    • Comprehensive comparative analysis of results simulation in graphical and tabular forms.

    • Comparison Modulus for visual and a numerical analysis of calculated and experimental data which can be used for decision of optimization tasks in radiation processing.

    • Built-in tools for decision of optimization problems with using dynamic and statistical databases.

    RT-Office modules represent the following additional information related to EB, X-ray and gamma ray processing:

    • Average dose

    • Dose minimum

    • Dose maximum

    • Dose uniformity ratio

    • Extrapolated and CSDA ranges for electrons

    • Part of beam use

    • Effectiveness

    • Statistical uncertainty

    We will consider the Data Output representation and analysis in accordance with classification of irradiated product.

    5.2. Dose distribution in irradiated product (Simple 2D model)

    5.2.1. MC simulation module. Output data for dose distribution in targets irradiated with EB.
    Software ModeRTL.

    1. After finish MC Simulation, Select the result in the frame "simulation results" of the Main form of the Software ModeRTL (See Fig.5.1(a)).

    There are three variants for selection:

    • Select "2D graphing" - The form "Dose plots" after MC simulation for analysis of the 2D absorbed dose and charge distributions for irradiated target under one/two-sided in graphical and tabular forms will be appear (see Fig. 6.1 (b)).

    • Select "3D one-sided" - The form "one-sided dose map" after MC simulation with 3D view of the absorbed dose distribution for irradiated target with package irradiated under one-sided in graphical and tabular forms will be appear (see Fig.5.2 a).

    • Select "3D two-sided" - The form "two-sided dose map" after MC simulation with 3D view of the absorbed dose distribution for irradiated target with package irradiated under two-sided in graphical and tabular forms will be appear (see Fig.5.2 b).
    1. Click on Charge in the frame "Dose and charge distribution" (see Fig. 5.1 (b)), the frame with 2D charge distributions in graphical and tabular forms will be appear (see Fig 5.3 Left graph).

    2. Click the button "Charge map" in the frame "2D charge distributions" (see Fig. 5.3 Left graph), the frame with 3D view of charge distribution in graphical and tabular forms will be appear (see Fig. 5.3 Right graph).

    FIGS.5.1 (a),( b).
    a) Main form of the Software ModeRTL
    b) Form with 2D view of the absorbed dose distributions under two-sided irradiated target with package in graphical and tabular forms.
    Left graph - 2D view of the depth dose distributions in the target Center.
    Right graphs - 2D view of the depth dose distributions near the Boundary of the irradiated target with package.
    Curve 1 near the boundary from left side, curve 2 near the boundary from right side in the direction of EB scanning. 

    FIG.5.2 (a),( b). 3D view of the absorbed dose distribution along target depth and target width.

    1. under one-sided irradiated target,

    2. under two-sided irradiated target.

    Note to the Analytic module, Software ModeRTL.

    Representation of output data for 2D and 3D views of the EB absorbed dose distributions in the Analytic module are the same as in the MC module of the Software ModeRTL.
    Additional results in form of the extrapolated and CSDA ranges for electrons are represented in the frame 2D view of the absorbed dose distributions.

    FIG. 5.3. Left graph. 2D view of the charge depositions in the PE plate irradiated with 2MeV electrons. Curve 1 –near the Center and curve 2 - near the Boundary of the irradiated plate. Right graph. 3D view of the charge deposition along target depth and along EB scanning.
    Target depth 1.2 cm (axis X), target width 10 cm (axis Y), width of scanning 2cm (axis Y)

    6. Comparison of absorbed dose distributions

    Module "Comparison" is intended for the scientific analysis and comparison of calculated and experimental data of 2D view of the absorbed dose distributions in the targets irradiated with X-ray, gamma ray and electron beams. This module is unified for all types of irradiation.

    The module allows to obtain the uncertainties estimation of results simulation due to uncertainties of input data for radiation facility, as well as due to uncertainties of physical models.

    Module "Comparison" is used in all RT-Office programs intended for calculation of the absorbed dose distributions.
    Functionality of Module "Comparison" will be demonstrated on example of targets irradiated with electron beam.
    Software ModeRTL.

    • Click the button "Comparison" in the Main form of the Software ModeRTL. The form of " Comparison of calculated curves" will be opened for analysis of calculated and experimental data of 2D absorbed dose distributions in an irradiated target (See Fig.6.1).

    • Select for analysis the calculated curve in the frame under the window "Number of the curve". For that, click the selected curve with cursor.

    There are the following variants of curves for the selection:

    • "Some user result file"- simulation results of the EB 2D dose distributions which were previously stored in the files.

    • "After Monte Carlo calculation" - the results of current Monte Carlo calculation of the EB dose distributions in the target.

    • "After analytic calculation" - the results of current Analytic calculation of the EB dose
      distributions in the target.

    • "Converted dosimetric file" - results with dosimetric experimental data which were prepared
      and saved after processing of dosimetric films with the Dosimetry module.

    • "After dosimetric block" - results related with dosimetric experimental data.

    • Select for analysis the calculated curve in the frame under the window "Number of the curve". For that, click the selected curve with cursor.

    • Select the position of dose distribution in the Center or Boundary of irradiated target for the chosen curve of 2D dose distribution.

    • Select by cursor the any of 5 columns of the table in the bottom part of the form the "Comparison of calculated curves". The selected column number will be automatically entered to the window "Number of the curve".

    • Click the button "Load selected curve".
      The characteristics of the 2D dose distribution curve will be appeared in the chosen column. And the graph of the 2D dose distribution curve will be appeared in the graph area.
      In a such way you can enter for analysis up to 5 curves of 2D dose distributions in the graph area. (See Fig.6.5).
      You can "Delete selected curves" and make for all curves "Normalization". (See Fig.7.6).

    • The function of button "Compare" (right down side in the "Comparison of calculated curves " frame) allows to make comparison of 2D dose distributions for 2 any curves to obtain the values of differential and integral deviations in % between compared curves. (see Figs.7.5 and 7.6).

    • For that, select the numbers of 2 compared curves and click the button "Compare ".

    Fig.6.1. The form of "Comparison of calculated curves".
    Example of 2D EB dose distributions in two-sided irradiated target.
    Curve 1 - EB dose distribution in the center of irradiated target calculated with MC method.
    Curve 2 - EB dose distribution in the center of irradiated target calculated with Analitical method.
    Curve 3 - EB dose distribution near the boundary of irradiated target with packing material calculated with MC method.

    • To copy the results comparison into your document, Click the button "Plot mode 2D/3D", if it is necessary, and then Click the button "Plot to clipboard" and paste them to your document.

    Fig.6.2. Example of "Normalization" for dose distributions presented in Fig.6.1.

    7. Method of dosimetric data processing

    Module "Dosimetry" is intended for processing of dosimetric films with experimental data and for preparing these data for "Comparison" module. This module is unified for all types of irradiation: X-ray, gamma ray and electron beams.
    Module "Dosimetry" is used in all RT-Office programs intended for calculation and analysis of the absorbed dose distributions.
    Functionality of Module "Dosimetry" will be demonstrated on example of targets irradiated with electron beam. Software ModeRTL.

    • Click the button "Dosimetry" in the Main form of the Software ModeRTL. The form of "Preparing of experimental dosimetric data" will be opened for analysis of calculated and experimental data of 2D absorbed dose distributions in an irradiated target (See Fig.7.1.a).

    Fig.7.1. a, b. The forms for "Preparing of experimental dosimetric data".

    • Load a text file with experimental dosimetric data from dosimetric films which are located on hard disk. A file may contains three or two columns (X and Y, or X, Y1, Y2). (See Fig. 7.1. b).

    Loaded data in graphical and tubular forms will be appeared in the form "Preparing of experimental dosimetric data" (See Fig.7.2. a, b).

    Fig.7.2. a, b. The forms for "Processing of experimental dosimetric data".

    • To move selected curve to left or invert one you need to use the control panel that will open when the button Move and Invert is pressed. To save changes, press the button Apply.

    • Click the button Cut and Scale, to cut and scale curves data.

    • To cut a part of curves, select by a tick the Marker 1 and move a mouse pointer to the plot. In this point a vertical red line appears into plot. You move it and place by left mouse clicking. It is a first limited line.
      You make the same with Marker 2 and place a second red line. (See Fig.7.2. a).

    • Click the button "Apply", to scale the curves. A part of curve placed between two Markers will saved, a plot will repaint and a grid will rewrite (See Fig.7.2. b).

    • The button Convert data for Comparison and its control panel provides the data for Comparison block. If you have made a scale of curves the pressing of Apply creates a new red curve onto plot and show new data in the grid. (See Fig.7.2 b).
      These data may be stored to a file with using Save as "*.flm" file.
      You can work with a film file if load it.

    8. Tools for data manipulation

    Tools for data manipulation (service blocks) are used in all RT-Office programs. Functionality of service blocks will be demonstrated on example of targets irradiated with electron beam.

    Example Software ModeRTL.
    The Software ModeRTL has block to save and open input data related with configuration of irradiation process.

    • Click the File in the main form of Software ModeRTL.

    • Select "Save configuration"

    • Enter file name and save input data for "Irradiation system" and "Irradiated target".

    • To work with previously saved configuration, Select "Open configuration", then "Irradiation system"/ "Irradiated target" from the list of configuration files.

    There are some service blocks to processing of calculated results in graphical forms. You can turn figure of diagram and select optimal angle, you can send figure to clipboard and paste in any documents. At the bottom of viewers screen form there are hints about buttons actions.

    • Every page has button "To clipboard".

    • You can save calculated result on hard disk as file "*.mon" after MC calculations.

    • You can see all "Configuration data" of radiation facility parameters, target characteristics, regimes irradiation for current calculation with use the button "Eye".

    • You can increase some area selected on the plot to have the better view. To do it, you need to place cursor above this area. Press left mouse button ( it is the left top corner of rectangle) and holding down this button, draw down rectangle around plot area. The point where you release left mouse button is right bottom corner of rectangle.
      For increasing of selected area, to move down cursor from left to right corner. For decreasing of the selected area, to move upwards cursor from right to left corner.

    Temperature module

    When you came in "Temperature", you see two parts of the screen form. Left part shows a plot, two output fields Max temperature for last point ( MaxT ) and Time for last point ( LTime ), the hint, a watch. Right part shows control panel with list, table, fields and control buttons.

    At a top of control panel you can see a list and button "Load".
    At first you have to choose item from list and to press "Load".
    There are three choices at list.

    • "Dose file (*.mon, *.ana)" is mode when you load data of calculated result what were saved during your work with program "2D graphing ( onesided )".

    • "Temperature file (*.tem)" is mode when you already worked with program "Temperature" and saved calculated result of temperature fields to have possibility of the calculation continuation.

    • "After analytical calculations" is mode for loading of results after analytical calculations what were made at this session of ModeRTL work.

    If you have chosen item from list and pressed button "Load", data for chosen case will be shown at the table. This table has four open cells, two for the object and two for covering of the object.

    • If you loaded data what were calculated with material chosen from list in Analytics or MC, this table will has name, "Heat capacity" (Hc) and "Temperature conductivity" (Tc) of this material.

    • If you loaded data which were calculated with material ingredients what were edited by hands at table of Analytics or MC, name of material will be "Unknown", Hc=0 and Tc=0. If material is "Unknown", you need to enter Hc and Tc by your hands.
      Though you haven't started a calculation, you already can look diagram for loaded data if you will press button "View".

    Now you enter values to field "Ambient temperature" and are working with fields "Complete time of cooling" (CTime), "Time interval" (Int), "Initial time" (ITime). If you only begin to calculate temperature fields, ITime = 0 always. You enter values to fields CTime and Int, and press button "Run".
    If you don't know values for these fields, you leave CTime = 0 and Int = 0 and press button "Run". In this case the expert program takes start, message window appears at the screen. You have to press "Yes".

    When temperature calculation has started , the red curve appears upon the plot and values of MaxT and LTime for every step. While there is calculation, the button "Run" is inaccessible, but button "Stop" become accessible.

    • You can stop the calculation by a pressing of the "Stop", then all other buttons of control panel become accessible.

    • If you have stopped process of calculation, you can change values of CTime and Int, can look temperature diagram by clicking "View", can write temperature fields at this step as temperature file on your hard disk (*.tem) by clicking button "To file (*.tem)", can send data to clipboard by clicking button "To clipboard".

    • After the stopping or finishing of calculation process you may change parameters and continue temperature research, if you will press button "Continue".

    Note:

    • But there are some differences between continuation after stopping and finishing of calculations. When you continue calculations after stopping, a plot takes continuation from last point what was calculated at previous step. But if you continue calculations after finishing, a plot will start from the first point.

    • Because a plot has 50 points for showing, your one calculative session can have only 50 steps. If you need more steps, you have to finished first session, to change values CTime and Int and to start next session by clicking button "Continue".

    To end work with "Temperature" module, press button "Close" and leave this form.

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