# Presentation: 450823

## NSLS – II  ASAC  Review

**NSLS – II  ASAC  Review**

**Conventional Facilities Briefing**
**Marty Fallier**
**Director for Conventional Facilities**
**National Synchrotron Light Source – II Project**
**October 10, 2006**

## Outline

- Conventional Facilities Scope
- Facility Overview
- Facility Program
- WBS
- Tunnel Design & Access
- Differential Settlement
- Vibration Mitigation
- Utility Support
- Temperature Stability
- Control Room
- Schedule

## NSLS II Facility Overview

## Site Plan

**NSLS**

**LOB Typ 4**

**RF-LINAC AREA**

**Service Bldg Typ 4**

**CFN**

**CLOB**

**Ring Bldg**

**Future JPsi**

**Future Guest House**

**Conf. Center**

**Underpass**

**Loading**

## Building Program

## Conventional Facilities WBS

## Floor Plan – CLOB 1st

## Floor Plan - CLOB 2nd 

## Floor Plan – CLOB 3rd

## Tunnel Design 

- Roof and wall thicknesses generally driven by shielding criteria except inner wall in area of berm (just structural)
- Outer wall (ratchet wall) is HD concrete
- During T-I will study whether precast or poured in place provides best balance of technical and cost performance
- Tunnel floor thickness driven primarily by vibration criteria
- During T-I will do modeling  to arrive at optimal thickness and section shape
- Rigidly connected to exp. floor to create monolithic floor
- Penetrations from above for power and cooling water
- Penetrations from sidewall for HVAC  Supply and Return

## Tunnel Design - Ring Building Section

## Tunnel Access

- Egress for life safety achieved by exits at each service building location
- Large shielded doors for equipment access provided at Service buildings for tunnel entry
- Mandoors and labyrinth provided at each Service building
- Vehicle ramp to roll-up door at 2nd floor of each Service Bldg provides equipment access to electrical mezzanine at top of tunnel
- RF & LINAC areas integrated with CLOB structure have similar access as Service Bldgs

## Service Bldgs

## Differential Settlement 

- Measures to reduce potential for differential settlement include:
- Thorough geotechnical analysis of site to identify problem areas
- Minimize footprint over disturbed areas
- Set finished floor elevation for maximum cut and minimum fill
- Early site preparation contract for maximum time to cut, fill, compact and observe settlement prior to building contract.
- Monolithic slab design for tunnel and experimental floor
- High slab stiffness, Tunnel 36”; Experimental Floor 18”
- Building loads isolated from tunnel and experimental floor slab
- Access corridor isolated from experimental floor slab

## Vibration Mitigation 

- Measures to be implemented in conventional design include:
- “Monolithic” slab for accelerator and experimental floor
- Slab thickness and section changes based on vibration modeling results during Title I
- Possible use of polymer admixtures for enhanced damping characteristics
- Isolation of bldg structure from tunnel and slab
- Inertial bases and isolation of  machinery
- Low flow velocity design for ducts and piping
- Limited use of duct and piping isolation to avoid conversion & transmission of  low frequency vibration
- Commissioning of equipment and systems to include alignment, balancing & vibration measurement

## Utility Support

- Utilities run underground in center of ring and distributed to five service bldgs (one in CLOB RF/LINAC area)
- Minimizes pipe runs and pipe size in bldg proper
- Minimizes potential noise and vibration impacts
- Mechanical Utilities include:
- Chilled water from expansion of Central CHW plant
- Tower water from process cooling water tower
- Potable water, compressed air, sanitary etc.
- Electrical Utilities distributed via substation and load center at each services bldg

## Utility Support

**Utility Support**

## Utility Distribution

## Temperature stability

- Key temperature stability requirement is tunnel air @ +/- 0.1C at a given location with respect to time.
- Requires high resolution industrial grade instruments and controls with excellent repeatability.
- Control scheme using programmable controllers and reheat with temperature reset capability
- Space temp setpoint of 85 F is nominally equivalent  to process cooling water supply setpoint to minimize temperature gradients
- Should be readily achievable provided loads to accelerator components are relatively steady-state

## Tunnel Temperature Control

## Tunnel Air Distribution

## Control Room

- The Accelerator Control Room is located on the second floor of the CLOB above the LINAC-RF area
- Provides ready access to Tunnel, RF & LINAC areas and electrical mezzanine
- Computer room is adjacent to control room and control room operators meeting room
- Additional study is required to identify optimal cable routing which may indicate computer room may be more advantageously located on 1st or 3rd floor

## Schedule

- Conventional Facilities Schedule has been coordinated with Accelerator requirements.
- Construction sequencing will enable
- Availability of Ring Bldg for LINAC, booster and storage ring  installation to begin – June 2011
- LINAC & Booster can be sooner if required
- Control/Computer room availability in CLOB - August  2011
- Conventional Construction complete - October 2011