# Presentation: 201479

## The CMS Physics Analysis Center - PAC

**Dan Green**
**US CMS**
**Program Manager**
**Jan. 28, 2004**

## Outline

**The Physics Plan for US CMS**
**Part of the RP financial planning**
**Took 3 years to baseline**
- Dialogue with US CMS
- Funding Agencies buyin
**Support by “host lab”, Fermilab**
**Why Now?**
**FNAL long range plan is developing**
**DC04 – boat is leaving, LHC data in 2007**
**Run II b and CDF/D0 evolution**
**Infrastructure – WH11**

## LHC Significance

**LHC will be the first jump in C.M. energy and luminosity in 20 years. Based on the last 40 years of HEP, new phenomena are expected.**

## LHC Impact on US HEP

**The LHC is the first accelerator in > 20 years to advance the energy frontier.**
**The LHC also advances the luminosity frontier significantly.**
**These advances mean that discoveries can come almost immediately, so that we must be ready on “day one”.**
**The US detector efforts will be ~ complete by 2005. We are thus able to prepare well for the physics with a solid base of detector expertise. **

## US CMS Support

**DOE and NSF - funding 167 M$ + the operations phase at ~ 35 M$/year.**
**HEPAP and Sub - panels. P5. The Facilities subcommittee. With the SLHC this program has decades of vitality.**
**Fermilab base support and the Fermilab Long Range Planning Committee (J. Womersley).**

## Fermilab Letter on M&O

**FNAL is using GPP funds to site US CMS on WH11 – VCR, PAC. Support for US CMS at FNAL is strong. Occupancy in FY04 is planned.**

## US CMS Physics Goal

**US CMS aims to continue to be a major intellectual force within CMS in the operations and exploitation phase.**
**To that end a community sized above a “critical mass” must be formed to address the Physics.**
**The natural source for the growth of this community is CDF and D0 - overlap  with US CMS at Fermilab in the PAC with the current expertise in the “state of the art”. (now through 2008)**

## How to do US CMS Physics?

**The funding agencies are already involved in “virtual” collaborations and laboratories. Astronomers propose a National Virtual Observatory (NVO). NSF has supported the NVO. Our model is the “collaboratory”. Need state of the art teleconferencing – but also face to face interactions ******** “critical mass”.**

## US CMS Advantages

**PAC is designed as an integral part of US CMS with financial support and the support of the host lab.**
**US CMS will complete detector construction ~ in 2005, leaving ~ 2-3 years to commission the detector and prepare for the physics.**
**Assuming physics goes from bottoms up, US CMS is well positioned by virtue of possessing detector expertise - HCAL (Jet/Met), ME, TOB, FPIX.**
**Planning for the 10 fold luminosity upgrade (the SLHC) can begin now – using strong FNAL in house facilities to design the detectors for the next decade.**

## Evolution of the Plan

**For > 3 years the Research Program has been being developed.**
**In regards to the VCR and PAC there has been a long dialogue within the collaboration.**
**In addition, inclusion of a PAC in the RP was accepted by DOE/NSF after considerable discussion. **

## PAC – CMS and US CMS Context, Schedule

**In  US CMS, planning is in place for a “collaboratory” or virtual laboratory. Elements are Virtual Control Room (commissioning, shifts and US accelerator community) and Physics Analysis Centers ( teleconf, analysis groups). VCR/PAC will save on travel funds and provide a nucleation point for a critical mass of physicists. This support will go directly and solely to US HEP physicists.**

## “Build it and they will come”

**Collaboratory supported by US CMS. We need only to start. However, the PAC must be a better place to do Physics than CERN or we should not create it (and US HEP will become a European appendage).**
**PAC avoids excessive travel and allows greater participation - e.g. CDF/D0 can multiplex while running at FNAL.**
**There is motion on the part of CDF and D0 - because we are only 3 years away from first beam. Now is the right time to start a core effort.**

## Crucial Needs

**Visitors program - support senior physicists for research to nucleate around.**
**“****Mixing” with CDF and D0 experts in p-p physics.**
**Access to Fermilab (WH11), other theorists and phenomenological physicists.**

## Technical Support

**High speed Fermilab network and CERN connection. CP at CERN are in the baseline plan to facilitate data transfer. Good connectivity within US to tie US CMS together (e.g. Tier 2)**
**State of the art videoconferencing**
**Shared**
**data and databases**
**e logbook**
**remote ops and controls (PVSSII)**
**remote shift taking and debugging**
**workspaces, tasks**

## The VCR and PAC on WH11

**We need liaison between the infrastructure on WH11 and the users. There should be a “bottoms up” design for the PAC.**

## Mundane Needs and Support

**Office space (WH11) – no more trailer trash.**
**AA/Sec support**
**Desktops and support**
**Materials and Supplies**
**Tier1 environment**
**Help desk and CMS computing environment - CP.**
**VCR infrastructure - CP**

## Points of Contact

**Heidi Schellman - LHC Users Org., Workshops on 1/4 basis?**
**K. Maeshima - WH11 layout and funding, US CMS management**
**L. Bauerdick, I. Fisk - Tier 1 and SWC interfaces**
**S. Eno + A. Yagil -  Think through initial tasks and assemble the core group.**

## Summary

**Planning for US CMS Physics has been a long process, because the situation is unprecedented for US HEP.**
**At all points a dialogue within the US CMS collaboration has been maintained.**
**The VCR and PAC are part of the baseline planning for RP and are financially secure.**
**Physics research in US CMS has the Tier 1 and Tier 2 centers as points of nucleation.**
**The aim is to have a “critical mass” of US physicists doing LHC physics and being in leadership positions within CMS for future decades – to help secure a future for US HEP.**
**Three years is a short time to be ready for spectacular new Physics – start now!**