You may get the new version of the code using the reference
http://http:"//lise.nscl.msu.edu - after via HTTP(new possibility - ZIP-file) or FTP (as it was before "Self-extractor exe-file")
Different profiles of a degrader (wedge) in the intermediate dispersive focal plane
The code used in previous versions only achromatic profile of wedge. Nowadays, There are 4 possible profile of a degrader (wedge) in the intermediate dispersive focal plane in the new version:
All profiles in the code suggest wedge-shape where only an angle of wedge is changed. User may find a negative angle of wedge in the case of negative momentum dispersion of the first path of spectrometer. It means a wedge is turned on 180 degrees.
In the example , a fragment beam of 19Ne with 600 A MeV
with a velocity spread of ~1.5% penetrates through differently shaped degraders
all having the same thickness at the optical axis (d/r=0.5). In the left
panel of Figure 2, the profiles of the degraders are chosen such that the
thickness is constant along the x coordinate (homogenous degrader). In
the middle panel, the slope of thickness preserves the achromatism of the
ion-optical system (achromatic degrader), and in the right panel, the profile
matches the velocity dispersion in the x direction and thus bunches the
energy spread as well as range distribution (monoenergetic degrader). The
position distributions at the final focus in Figure 2 suggest that the
achromatic degrader is superior for spatial isotopic separation because
it is shaped so that the image size is independent of the incident momentum
spread of the fragments. Interesting applications are suggested by the
use of a monoenergetic degrader, especially if a narrow implantation distribution
proves to be of importance, e.g. for implantation in thin detectors used
in nuclear decay spectroscopy or in biomedical treatments.
Figure 2. Phase-space imaging of differently shaped
degraders within the achromatic ion-optical system. The results for a homogeneous,
an achromatic, and a monoenergetic degrader are given. All degraders have
the same thickness on the optical axis (d/r=0.5) .
For F?1, the two above matching conditions are thus only obtained by optics tuning, especially varying the dispersion coefficient (X/?)B. It expects to use such a degrader with F<1 in order to reduce momentum spread (or energy spread) in the second part of the spectrometer and particularly at the final focus point, to minimize range dispersion of selected products stopped in solid state detectors.
In the second case (F=1), optic matching conditions remain the same as without using of degrader . The field of all the magnetic elements of the second section has only to be scaled to the proper value B2/B1, calculated for a chosen value A3/Z2 of the selected nuclei. One however has to build a special shaped degrader (achromatic degrader) in order to maintain the condition F=1 (i.e. the same relative momentum spread before and after the degrader).
The next problems with degrader  was considered in the code:
Calculations of transmission was made only for all Ar-isotopes:
|Profile of Wedge||
 R.Anne, D.Bazin, A.C.Mueller, J.C.Jacmart and M.Langevin, "The achromatic spectrometer LISE at GANIL", NIM A257 (1987) 215-232.