1. Status Report on the Alignment Activities at SLAC
Catherine Le Cocq, Brian Fuss, Robert Ruland
Stanford Linear Accelerator Center,
Stanford, CA, USA
The Stanford Linear Accelerator Center is operated by Stanford University for the U.S. Department of Energy.

2. Stanford Linear Accelerator Center
SLAC Activities Report

3. SLAC Activities Report
SLAC Activities Report

4. SLAC Activities Report
SLAC/SSRL Site
PEPII LER 3.1 GeV
PEPII HER 9 GeV
NDR 1.15 GeV
SPEAR
BaBar
LCLS
PEP II HEB
Positron Return Line
ESA
FFTB
PEP II LEB
NLCTA
BSY
ESB
SDR 1.15 GeV
SLC Arc
Not to scale!
SLAC Activities Report

5. SLAC Activities Report
SLAC Activities Report

6. SLAC Activities Report
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7. SLAC Activities Report
Ready mid November 2003
First light to beamline March 2004
Energy: 3GeV
Current: 100 mA designed for 500 mA
Emittance: 18nm-rad
SLAC Activities Report

8. SLAC Activities Report
Peak luminosity: 9.21033/cm2/s.
I + current: 2450 mA (3 RF stations)
I – current: 1550 mA (8 RF stations)
Daily integration record: 710 pb-1
run: over 100 fb-1
Total integration since May 1999: 240 fb-1
SLAC Activities Report

9. Summer 2004 PEPII Improvements
IR2 south forward shield wall: Backgrounds
Add another new LER RF station: Higher current
Add a HER RF station by splitting up a current 4 cavity station into two 2 cavity stations: Higher current
Two new “Frascati” longitudinal kickers in LER: More stability
New electrodes for transverse kickers: More stability
Add fans to all HER bellows: Cool Higher Order Modes
Alignment work (quadrupole rolls): Smaller vertical emittance
New LER synchrotron light monitor: Smaller vertical emittance
IR NEG pump HOM reduction: Better lifetime and backgrounds
New Support Tube Chiller: Higher currents
Extract from John T. Seeman’s talk
at SLUO Meeting, July 6, 2004
SLAC Activities Report

10. SLAC Activities Report
PEP II Ring
LER (e+)
50 sextupoles with 7 TBs
316 quadrupoles need fixtures (some in straights with 4 TBs)
HER (e-)
104 sextupoles just laminations
290 quadrupoless with 6 TBs
The B-Factory aims to study the CP violation from the collisions between circulating electrons (maximum 12 GeV)
and positions (maximum 4 GeV) up to a maximum stored current of 3 A (1.4x1014 e- or e+).
The B-Factory uses the existing SLAC 2-mile-long LINAC (divided into 30 sectors) to provide the electron and positron beams at proper energies.
The electron beam is directed to the high-energy (HE) bypass line through the HE extraction line at sector 10 (positrons to low-energy bypass line at sector 4).
Further downstream in the Beam Switch Yard (BSY) area, the high-energy north injection transport line (HENIT) takes the electron beam into the high-energy storage ring (HER), while
the low-energy south injection transport line (LESIT) takes the positron beam into the low energy storage ring (LER).
LER is positioned about 1 m on top of HER in an underground tunnel of 2200-m-circumference (called the PEP-II ring).
The two stored beams circulate in opposite directions and and intersect only at the center of the large BaBar detector located at the Interaction Region 2 (IR2).
SLAC Activities Report

11. SLAC Activities Report
SLAC Activities Report

12. SLAC Activities Report
SLAC Activities Report

13. SLAC Activities Report
IR2 BaBar
Detector Area:
19 monuments.
4 magnets (Q4 & Q5 on both sides)
A side:
8 monuments.
12 magnets (1 HER, 11 LER)
B side:
17 monuments.
25 magnets (4 HER, 21 LER)
SLAC Activities Report

14. SLAC Activities Report
SLAC Activities Report

15. SLAC Activities Report
QU4
QU5
B-side
2004: top and bottom sextants only
Remove 18 layers of RPCs
Install 6 layers of 7/8” thick brass absorber in layers 5,7,9,11,13 & 15 – 11.5 tons/sextant
Install LST detectors in layers 1,2,3,4,6,8,10,12,14,16,17 & 18
SLAC Activities Report

16. SLAC Activities ReportG H I J K A B C D E F
QU4
QU5
BH2BQU4E
BL2BQU4D
BL2BQU4A
BH2BQU4B
The TC2002 and the level observations were combined in a similar fashion as in the initial survey. In particular, the a-priori standard deviations were identical: 100 μm for distances, 50 μm for height differences, 50 μm over the distance in meters for horizontal angles, 70 μm over the distance in meters for vertical distances.
SLAC Activities Report

17. SLAC Activities Report
Scribe lines
SLAC Activities Report

18. SLAC Activities Report
First x-ray free electron laser
$315 million project
2006: Scheduled start of construction
2009: Scheduled start of operations
SLAC Activities Report

19. SLAC Activities Report
SLAC Activities Report

20. SLAC Activities Report
LCLS Injector Area
SLAC Activities Report

21. SLAC Activities Report
High-energy gamma-ray observatory
2006: Scheduled launch
Main instrument: LAT composed of:
Precision Tracker
Calorimeter
Data Acquisition System
Anticoincidence Detector
SLAC Activities Report

22. SLAC Activities Report
SLAC Activities Report

23. GLAST Flight Grid and Tracker Towers
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24. SLAC Activities Report
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25. SLAC Activities Report
M40 Base Station
Position Accuracy: ±0.5 mm; ±2.0 mm
Velocity Accuracy: ±1.3 mm/a; ±5.5 mm/a
SLAC Activities Report

26. Other Special Projects
New instrument acquisition:
Leica TCRA1105
Trimble DiNi 12
Leica DNA03
Z+F Imager 5003
Instrument studies:
FARO arms
Applied Geomechanics and Leica Nivel tiltmeters
HLS sensors
Wire offsets
New data collectors: Allegro CE and CX
Software
SLAC Activities Report

27. SLAC Activities Report
In House Software
Network Analysis: LEGO
No changes
Interface Tool: LEGOServer
MATLAB connection
Visualization Tool: SIMS
Wire offsets
Management Tool: WinGEONET
Data capture for Leica DNA03
Moving from Visual Studio 6 to .NET
SLAC Activities Report

28. Software Architecture
LEGOServer including LEGO
DataHandler
IProject
IDataConnection
DataItem
IDataItem
Environment supporting COM interfaces
such as MATLAB
LEGOServer
Thread
Calculate()
SimsDocument
SimsViews
Error Ellipse
alloc() Sta()… Tar()… AllDir()… AllDist()… AllDifH()… LegoL2() . . Result()
SLAC Activities Report

29. 3D Error Ellipsoid with MATLAB Graphics
SLAC Activities Report

30. SLAC Activities Report
Immediate Future
PEPII / BaBar Summer/Fall downtime
LCLS related studies
GLAST surveys
Laser Scanner
Software upgrades
Preparation for month shutdown
SLAC Activities Report

31. SLAC Activities Report
Future SLAC Program Presented by SLAC Director Jonathan Dorfan at the 08/25/04 All Hands Meeting
The Enriched Xenon Observatory is a project in particle physics aiming to detect "neutrino-less double-beta decay" using large amounts of xenon isotopically enriched in the isotope 136. Simply stated the goals of the project are:
Measure effective Majorana neutrino masses with a sensitivity close to 0.01 eV
Probe the Majorana nature of neutrinos.
We are planning to identify the final state of the decay, a barium atom, using high resolution, single atom spectroscopy.
The collaboration already has 200kg of Xenon enriched to 80% in the isotope 136 that will be employed in a prototype to be installed at WIPP. The project involves scientists from University of Alabama, Caltech, ITEP (Moscow), University of Neuchatel, SLAC, Stanford, Colorado State University, Laurentian University, UC Irvine, and Carleton University.
SLAC Activities Report