BTeV Trigger at ESE 

The Latest Draft of the Pixel trigger block diagram (could also be Muon trigger).

This includes the PTSM and GL1 systems. PDF or Word .

Global Level 1 documents.

• Draft GL1 Requirements. PDF or Word
• Draft GL1 Block Diagram. PDF or Word
• A working document on GL1 containing some data rates and quantities, packaging ideas and the beginnings of an architecture. PDF or Word .

Links to other places of interest.

DSP Prototype documents.  The latest on the prototype board.

• Within the BTeV collaboration pages are several trigger pages. The one most closely associated with the hardware development is Erik's at http://www-ppd.fnal.gov/btev_trigger/trigger_public/index.html .
• The UIUC trigger guys say to try this page for muon trigger information. It is in Mike's favorite format. http://web.hep.uiuc.edu/Engin/BTeV/index.htm .

Trigger Hardware Group Meetings and presentations

• Misceleneous Document Directory for web access to files of interest.
  
• Some notes from the Wednesday trigger meeting containing significant decisions that we want to remember that we have made. (Most recent information at the top)
• Mike Haney's Trigger page with several documents and presentations.
• And, of course we point up to the Trigger Working Group meeting page .

WBS working documents and related administravia.

All the real WBS documents are at the BTeV cost and schedule pages.   Look there for the most current versions, guidelines, and example documents.

The current (depending on when it was updated) trigger group WBS working documents are:

• Trigger WBS1.8 (UPDATED BY GUSTAVO 11-20-02) and WBS 1.10 as Excel files . (UPDATED BY GUSTAVO 9-6-02)
  • Ed's changes list is here .
    
  • We have a copy of the June 29, 2001 update of the Requirements document in Word97 format and also as PDF format , but it is not meant to be a primary reference. Don't link to here.
  • An outline for the Pixel hardware items and a Word version.
  • An outline for the Muon hardware items and a Powerpoint version.
  • The matrix co-ordinating names between Muon and Pixel sections and a Word version

Data Flow Analysis Technical Documents

• Data flow analysis document. PDF version
• Gustavo's talk at the BTeV Trigger meeting, Nov_9_2001. Power Point
• Data flow analysis in the Farmlet document. PowerPoint version

Miscellaneous Technical Documents

• Mike Haney's DSP feature spreadsheet is an Excel document. Let Mike know if there are problems with this.
• Vince made an Excel file that can display rates and times within the trigger system. By modifying the variables at the head of the file, such as number of DSPs per farm or the number of data bytes per hit, you can see the effect in the data links and processing time for parts of the system. Coments and suggestions invited.
• Ken TI-DSP comparison table. Excel file .

Miscellaneous Presentation Documents

• The comments from the technical review of the trigger system in June 2000. As Word , text and PDF documents.
• Another Power Point Trigger talk from the December 16, 2000 BTeV collaboration meeting.
• Cool Stuff. This is a pointer to Erik's trigger movie .
• Tools for the L1 Pixel Trigger Processor by Gustavo Dec.. 2000. Both as Power Point and as an Acrobat file .
• A trigger work plan talk given by Erik Sept. 20, 2000. It is a Power Point presentation. (Added Feb. 01).
• Gustavo's talk at the BTeV collaboration meeting of May 25, 2001. Power Point

Documents generated as a result of the November workshop.

Requirements document as a Word97 document and as a PDF document .
This is a secondary copy that may be up to date or may not. The most valid version of the requirements document will be on the BTeV internal web pages at the BTeV Pixel Trigger Electronics page.

Specifications document (under construction!!) as a Word97 document and as a PDF document .
These documents are updated as they are modified.

A group task list with some notes and comments as a Word97 document and as a PDF document . (Working doc)

Documents from the November 2000 Workshop.

Workshop presentation of status of trigger implementation: Status as a Word file or Status as PDF Questions to be answered at the break-out sessions: Questions as a Word file or Questions as PDF .

This is a list of documents by Don Husby for the development of the BTeV Trigger

.doc	.pdf
X	X	Overview of pixel trigger architecture. This was written in Oct-99. It has a pretty good description of the basic architecture except that current plans call for the FPGA tracker to have a 4x4 switching backplane and the Farm-Box to have an 8x8 backplane.
X		The Farm-box is one of the major building blocks of the trigger system.
X		This describes the architecture of the FPGA tracker system. However, it does not describe the tracking algorithm.
X	X	The Pixel processor does pixel formatting and translation. This document is fairly up to date. Current plans call for the delay buffer function to be implemented in a "standard" L1 buffer. However, the pixel processor will still have to do some time-sorting. There has been an ongoing debate about whether or not a center-of-mass calculation needs to be done.
X		This is two block diagrams implementing FPGA tracker algorithms. The first is the BB33 algorithm which has been simulated and advertised widely. It will be very difficult to implement. The second is much smaller, probably has better performance, but has yet to be simulated.
X		A short discussion of how to implement the Muon trigger using pixel-trigger hardware. Will Johns read this and commented that it was probably overkill. He thinks the trigger can be implemented using only one view from the detector. He should be the primary reference for this.
	X	Early talk (August, 1998) on the Systolic Associative trigger implementation. This was targeted to the triplet-based detector design and is the first to suggest reading out of track ends only.
X	X	Update (July 1999) of the SAST algorithm to use the doublet detector design.
X	X	SUMAC: Short description of the protocol used for the Serial Utility Monitor and Control system.
X	X	Short discussion of software protocols for SUMAC

Also, you can find some useful first generation information at the trigger prototype web page.

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