Introduction
Computing in High Energy and Nuclear Physics (CHEP) is a major series of international conferences for physicists and computing professionals from the High Energy and Nuclear Physics community, Computer Science and Information Technology.

The CHEP conference provides an international forum to exchange information on computing experience and needs for the community, and to review recent, ongoing, and future activities.

CHEP06 is organised by TIFR, Mumbai (India). Further bulletins will provide information about the conference's background, organisers, topics, programme and preliminary registration information.

Venue and Dates
CHEP06 will be organised within the premises of TIFR, Mumbai (India). The dates have been fixed from Monday February 13, 2006 to Friday February 17, 2006.

Pre-registration will start from June 15, 2005. The registration fees for early registration will be US$ 300. Pre-registration is possible even after December 15, 2005 but then the registration fees will be US$ 350.

Registration will start on Sunday February 12, 2006 afternoon at 14:00 until 20:00. Registration will also be possible on Monday morning and each subsequent mornings for delegates who arrive later in the week.

History
CHEP conferences are held in roughly 18 month intervals, alternating between Europe, North America and other parts of the world. Recent CHEP conferences have been held in

Asia Europe N America S America Europe N America Europe Asia N America Europe

: Tsukuba, Japan (1991) : Annecy, France (1992) : San Francisco, California (1994) : Rio de Janeiro, Brazil (1995) : Berlin, Germany (1997) : Chicago, Illinois (1998) : Padova, Italy (2000) : Beijjing, China (2001) : San Diego, California (2003) : Interlaken, Switzerland (2004)

Organisation
There is an International Advisory Committee setting the overall themes of the conference, a Local Organising Committee responsible for the conference infrastructure. There will be a Programme Committee responsible for the content of the conference.

Travel and Accommodation
Mumbai is well connected to all major cities in the world and also to rest of India. The international and domestic airports of Mumbai are located roughly  30 km from the conference venue. Efforts are being made to provide pick-up facilities at the airport. The two major railway stations are located at 7 km (CST) and 12 km (Mumbai Central) from TIFR.

Details on accommodation will be given in the next bulletin. Arrangements are being made with some good hotels within 5 km from the conference venue. We are negotiating for some special rates for the conference delegates. There will be arrangements to transfer the delegates from the place of accommodation to TIFR and back.

Conference Programme
The scientific programme of CHEP06 conference will consist of a plenary session of invited oral presentations, a number of parallel sessions comprising oral and poster presentations, and an industrial exhibition. Contributions will be solicited in the form of abstracts and the Programme Committee, with the help of the International Advisory Committee, will use these to finalise the programme.

The theme of the conference will focus on the processing of HEP data at all stages, from the high level triggers that run on farms of CPUs situated close to the experiment through to the final analysis that use resources distributed worldwide. We expect to draw on the experience from running experiments and also to review the status of new studies of the distributed computing models being made in preparation of the LHC experimental programme.

The preliminary ideas of the list of topics to be covered are as follows:

Online Computing:

CPU farms for high-level triggering; farm configuration and run control; describing and managing configuration data and conditions databases; online software frameworks
 and tools.

Event processing applications:

event simulation and reconstruction; physics analysis; event visualisation and data presentation; toolkits for simulation and analysis; event data models; detector geometry models;
specialised algorithms for event processing.

Software Components and Libraries:

persistency; interactivity; foundation and utility libraries; mathematical libraries; component models; object dictionaries; scripting; graphics; use of 3rd party software components
 (open source and commercial).

Software Tools and Information Systems:

programming techniques and tools; software testing; configuration management; software build, release and distribution tools; quality assurance; documentation.

Distributed Data Processing:

studies of data organisation and analysis strategies; data management systems; distribution and storage of all types of data (raw, simulated, calibration etc.);
vent selection and data mining; exploitation of the computing centres and fabrics; the development of the distributed computing models of experiments;
real experience in prototypes and production systems.

Computer Facilities and Grid Computing:

integral systems (cpu/storage) and their operation and management; functionality and operation of regional centres; global usage and management of resources;
grid infrastructure and its exploitation in distributed computing models.

Networking:

global network status and outlook; advanced technologies and their use in applications; HENP networks and their relation to future grid systems;
he digital divide and issues of access, readiness and cost; collaborative systems, progress in technologies and applications.

Social Programme
There will be a welcome reception on the evening of Monday, February 13, 2006. Entrance to this will be included with the conference registration fees, as will entrance for the mid-week conference dinner to be held on Wednesday, February 15, 2006.

There will be a cultural evening. The details of this will appear in the future bulletins.

Timetable

Second Bulletin:

June 15, 2005 (Call for Contribution, Conference Registration, Hotel Reservation)

Third Bulletin:

August 15, 2005 (Conference Programme News)

Final Date for Contributions:

September 30, 2005

Fourth Bulletin:

October 15, 2005

End of Early Registrations:

December 15, 2005