new versions 4.14, 4.15

East Lansing

Plot calibration utilities
NSCL & The LISE code


1. Plot calibration utilities – version 4.15

1.1. Calibration of physical parameters
1.2. Two-dimensional plots in the “calibration” mode
1.3. New options of plots
2.NSCL & The LISE codeversion 4.14
2.1. Calibration of A1900’s dipoles
2.2. Support of NSCL specters
2.3. Balls animation for Windows NT

2.4. Optimization of Monte-Carlo plots

1.Plot calibration utilities – version 4.15 

Physics get in experiments the data in relative channels, then translate them proceeding from given calibration in real physical values. On the contrary the program does all calculations and creates the plots in absolute physical values. For comparison of calculations with experimental data a physicist was obliged with the calculator quickly to recalculate these plots. In the old versions under DOS the program allowed to deduce in channels for the plot dE-TOF. In the new version of the program it has been incorporated a possibility to input calibrations of 7 materials(detectors) and next 4 parameters: time of flight (TOF), total kinetic energy (TKE), horizontal distributions in disperse and final focal planes. All calibration values are kept in LISE-files.

1.1.Calibration of physical parameters

Calibration values for materials (detectors) are entered through the dialogue "Material", then the button "Calibration". The user can enter given as calibration of physical values through channels, so channels through physical values with the help of switching of a direction of input (see Fig.1). A name of dimension of physical value also can be modified (in the given figure the dimension is "MeV").

Fig.1. Input of calibration values of a material (detector).

Input of calibration values for parameters TOF, TKE, Xdisp, and Xfinal is carried out through the dialogue “Plot options” (menu “Plots”)(see Fig.2 , the box A).

Fig.2. The dialogue “Plot options”. The box A is showing the panel for input of calibration values for parameters TOF, Tke, Xdisp, Xfinal. The box B is showing new options to printplots.

1.2.Two-dimensional plots in the “calibration” mode 

At work with two-dimensional plots a new window exists in the new version, where the relative channels values are displayed on the basis of entered calibrated values (see A in Fig.3). This innovation works as well as standard mode, and with Monte-Carlo method. Also all calibration values are transformed and in case of change of a direction of a horizontal axis, or change of axes X and Y.

Fig.3. The bi-dimensional plot dE-TOF. New calibration possibilities are marked by arrows. For details see the text.

The user can change calibration values directly at work with the given plot, pressing on an icon that is shown by the arrow C in Fig.3. As a result of this action there is the dialogue “Plot's Calibration”. Besides that the user can change calibration, he also can put an option, that the axes were in channels designed on the basis of calibration that facilitate comparison of the experimental plots with designed by the program LISE. If the user has chosen an option of a conclusion given in channels, there is an inscription Channels in red color, and the digits on an axis also are deduced in red color (see Fig.3, arrow B)

Fig.4. The dialogue “Plot’s calibration” allows to change calibration values

and to choose a method to draw axis’s values (physical values or channels).

1.3.New options of plots

In the early versions of the LISE program a fragment rate was always typed also to the right of a fragment name at output of two-dimensional plots on a printer. It was caused by that it were earlier used black-and-white printers to print. Now color printers are used everywhere. The user can switch off this possibility and print a plot without rates value (see Fig.2, box B).
Unfortunately, the vertical inscriptions for various systems are deduced on the printer not as they are visible on the screen. The inscriptions are developed on 180 degrees sometimes in PRINT mode. To explain it was more hardly, than to make simply option of turn of the name of a vertical axis in PRINT mode (see Fig.2, box B). So for GANIL and JINR this option should be switched off, and for NSCL is on the contrary included. However user always can himself check up and choose an option inherent for his system.

2.NSCL & The LISE codeversion 4.14

The user may get the scheme of new A1900 spectrometer using the menu “Help -> A1900 spectrometer”.

2.1.Calibration of A1900’s dipoles

As well as for setups LISE and M5678 (JINR) the calibration values of magnetic dipoles were entered for the A1900 spectrometer. Through the menu “Utilities -> A1900 calibration <PLAN>” the User may get the scheme of the A1900 spectrometer, where he can with the help of buttons choose a necessary dipole. The values can be entered as in tesla-meters, tesla, and ampers at the request of the user.

Fig.5. The A1900 spectrometer scheme with dipole calibration buttons.

2.2.Support of NSCL specters

In the new version the opportunity to show on the screen spectra in a format NSCL-ACSII has appeared. The given spectra can be as well as one-dimensional, and two-dimensional. Thus in-built program BI can distinguish spectra of the given format to search peaks. The binary format of NSCLspectra will be entered into the program in a near future. 

2.3.Balls animation for Windows NT

Problem of palettes arising under Windows NT system at last was solved. Thus fans of the given operating system can be glad by this ball’s animation.

2.4.Optimization of Monte-Carlo plots

It was marked, the system takes away time from the LISEprogram on enough fast computers in a mode of a spectra acquisition by a method of Monte-Carlo. It was possible to be convinced visually, when the speed of a acquisition falls gradually from 20 thousand per second up to 1 thousand per second. In the new version the subroutine of a spectrum output by a Monte Carlo method was modified, that allows to have the greatest priority and to achieve speed of a set up to 45 thousand events per second for the computer Pentium III with frequency 600 MHz.
Algorithm of event drawing on the screen also was modernized, that essentially has allowed to reduce of a spectrum portrayal time.