This is the first bulletin after the initial announcement of the First North American ATLAS Physics Workshop, to be held on December 19-21, 2004, at the University of Arizona in Tucson, Arizona.

The goal of this workshop is to lay down the road map for contributions from North America to the upcoming ATLAS Physics Workshop at Rome, Italy, in Spring 2005. All US and Canadian collaborators are invited to present the status of their physics analysis or their near future physics analysis plans. We especially encourage people who have just recently started, or are about to start to work on a physics topic in ATLAS, to attend.

The workshop has two full days of plenary meetings on December 20 and 21, 2004, which are preceded by a Physics Analysis Tools Software Tutorial on Sunday, December 19, 2004, in the afternoon. The plenary meetings are split into two half-day topical sessions, with a System Performance session on Monday, December 20, in the morning, followed by a Physics Performance session on Monday afternoon. The Discovery Physics Session is planned for Tuesday, December 21, in the morning. It is followed by a summary and close-out session on Tuesday afternoon. More details will soon be available on the web address given below.

The workshop takes place in the Student Union Memorial Center at the University of Arizona at Tucson, Arizona. The rather new (early 2003) meeting facilities in this center are easily accessible from many hotels and bed & breakfast inns around campus.

The meeting has been initiated by the US ATLAS management and is organized in large parts by the newly formed Analysis Support Group. The University of Arizona Experimental Elementary Particle Physics group is responsible for the local organization.

As of today registration for the workshop is open at

Also check this web page for more details on the workshop program, fees, the location, accommodations, the workshop banquet, and other useful information.