Proceedings of the Muon Mini-Workshop
   -------------------------------------

The workshop primarily focussed on the following issues:

1.  Replacement of MuoDigi and MuoDigitoUnpReco by one
    package MuoMcUnpReco

2.  Rewriting of MuoHitReco

3.  Implementing tilts and special tiles in B and C Pixel
    layers

4.  Rewrite parts of geometry code to link the objects that
    need to move together in the collission hall

5.  Understanding survey and alignment issues

6.  L3 tool

7.  Graphics

     The items and issues discussed at the first meeting on 
Wednesday (May 13th) are listed earlier.  After the first 
meeting, we met in several small working groups on Wednesday
and Thursday to discuss and to work.  Particularly, there were 
meetings of the calibration and alignment, muon geometry, 
MuoDigi, Graphics, and L3 tool subgroups.
     The decisions made in the sub-group meetings, work 
accomplished and short term plans to complete the work were
discussed in the summary session Thursday afternoon.  The 
agenda for the session was as follows:

Agenda for the Summary Session, Thursday 4:30 PM - 6:30 PM

    - Status for MuoDigi Replacement     Pushpa/Onne/Mike F.
                  MuoMCHitProcessor
		  MuoHitReco (new)

    - Fix to MuonHitReco (old)           Taka

    - Status of Muon Geometry            Rick/Nemat

    - D0Scan Status                      Sharon

    - Report on Calibration & Alignment  Andrzej

    - L3 Tool                            Daria/Onne/Chunhui

    - AOB

Some notes from the meeting are transcribed here:

The April 30th Milestones
     We have done some testing using MC data, have been 
doing code clean-up.  These items can be declared done, 
although, they will be worked on for quite some time 
(until the software is complete and declared done!) 
However, none of the muon software packages make use 
of the ErrorLogger.  This needs to be corrected in the
near future.  Particularly muon geometry (Rick) and 
MuoHitReco (Onne) should implement these immediately.  
We do have MuoAnalyze, MuoIDAnalyze, packages for 
analyses of objects.

We have implemented toroid (passive material) in geometry. 
Other supports need to be implemented.

As for graphics, we now have display packages in all three 
graphics environments D0VE, D0Scan and Mr.Datae.


Beyond-July Milestones
     We agreed that Daria will make a list for the Muon ID
tasks and we would add on to it.

Disk Space
     We agreed to request 10Gb of disk space for Muon 
Algorithms & ID together.

Status of MuoDigi Replacement
     Here is the flow chart for what we have now and
what is proposed.

The prioritized tasks for this effort is as follows:

Mike releases unpack_evt package into CVS
Onne works on the new MuoHitReco package which would
be used both in Level 3 and offline.  Harrison will be 
the consultant.
Vladimir fixes the hit merging (this is a misnomer)
code and releases.
Vladimir releases time-to-distance conversion code.
Taka/Vladimir will produce MuoMcUnpReco.
  
Note that these new packages should use Mike's new 
classes for UnpackData (unpack_data, unpack_evt).  
Since the adaptor only exists for PDT's (MuoPDTChannel),
only PDT hits can be implemented for now.

Pushpa will be the overall coordinator for this project.
The deadline to complete a working version for PDT's is
May 21st.

Additional Points:

The current MuoHitReco has been apparently fixed by Taka
to work for MDT's.  This has to be tested by Daria and 
Chunhui.

Rick Jesik reported on status of Muon Geometry.  Rick 
and Nemat are modifying geometry classes to link the 
chambers and scintillators (and supports if any) so that
they move together.  There are seven large movable pieces
in the Muon System.

As for event display, George Alverson has all the 
sub-systems in the D0scan display and has implemented the 
display of PDT cells and hits.  This implementation needs
to be updated.  Harrison has made progress on Mr.Datae 
and has been able to read successive events from file.  
He has had some problems with Euler angles returned by 
Geometry.  That problem should go away if he uses the angles 
in the way D0VE implementation does.

The calibration and alignment working group met a few 
times during the workshop.  A document on survey 
procedures and some thoughts on alignment has been 
produced.

A plan for L3 tool development was also discussed.
More details about L3 Muon Filter and L3 Muon Tool 
can be found on the Muon ID web page.