Update : new version SGV 2.20
Functional Changes:
- SGV now also simulates the response of minimum ionizing particles in the calorimeters. See here and here in the User's Guide.
- The geometry description now allows for the description of taggers and scintilators. See here , here , and here in the User's Guide.
- Calorimeters can now also be described as 'modular', ie. the shower start-points will be given by the centre of the hit module, rather than actually measured. See here , here , and here in the User's Guide.
- Several calorimetric showers can now be attached to a single particle. (Presently, this feature is only used to give give the m.i.p. signal of a hadron in the electro-magnetic calorimeters in front of the hadron calorimeter in which it created a shower. However, it allows for the implementation of closely joined EM and hadronic calorimeters, in which showers would often be detected partly in one type, partly in the other.) This implies that the calorimeter information in /ZATRS/ has changed. Presently, the old arrays are still filled, for back-ward compatibility, but they will be removed in a future release. See here in the User's Guide.
- The option to generate the seeds automatically from the wall-clock (previously implemented only on VMS) is now also available under UNIX. See here in the User's Guide.
- The access from the user-code of the geometry description
has been revised and made more convivial. The geometry can
now be accessed via the user-defined sub-detector names.
The new routines are:
- ZTDTGE for geometry parameters,
- ZTDTPM for parameters governing the position measurement,
- ZTCSEP for parameters governing the calorimeter energy measurement, and
- ZTCMPA for parameters governing the calorimeter measurement of minimum ionizing particles.
- ZTDTLL returns the set of layers that corresponds to a given name (the name can have wild-cards).
- ZAUNHT counts the number of layers in a sub-detector that a track went through, and
- ZAUDHL returns a set of those layers.
- Yet another event generator has been included. This one simply generates single particles in a selected momentum and angular region. This is useful for detector performance studies. See here in the User's Guide.
Bug fixes :
- The set-handling routines did not correctly handle the numbers represented of the most significant bit (31,63, etc.). This has been fixed.
- In the case SGV_LIB was not defined, CRESGVEXE did not work correctly, if the user pam-file contained decks with the flags DUMMY or DEFAULT. Those routines would be loaded both from SGVALL.CAR and the user pam-file, yielding doubly-defined symbols. This has been fixed.
- On DIGITAL UNIX, there was a problem in correctly loading block-data modules from external libraries. The way this was done previously did not work for optimization levels above 0: The optimizer correctly spotted the fact that the code-section where dummy-calls to these modules where placed was not reachable, and removed them. This has been fixed on by adding the correct options to the compilation command.
- In the PYTHIA version, the program didn't accept title-files without the 'LIST' card selected. This has been fixed.
- In the default version of ZDIDEN, all charged particles were assigned the pi+ code (never pi-). This has been fixed.
- The user-defined minimum gamma energy to produce e+e- pairs in the detector was never checked. This has been fixed.
- There has been a general clean-up of the code, removing unused variables and arguments. This does not concern any routines the normal user would call. Please refer to the Reference Manual, if You have directly called other routines than those in the utility packages (routines starting with ZAU or ZU), or in SGVUSER.CAR.
Documentation :
- The users guide and reference manual has been updated due to the changes above.
- The Web-brosawble documentaion has been made easier to read by changing the default background color.
- The examples of title-files have been extended. There are now examples of the title-files corresponding to all the event generators supplied with SGV.
- A Web-page with instruction on how to access the latest development version has been added.
- This news Web-page has been reorganized.