Transcript X-Ray Fast Detector Planning Status

X-Ray Detector Program Status
John Arthur
October 12, 2004
X-ray detectors
John Arthur
[email protected]
X-ray detectors for LCLS
LCLS presents unique challenges for detectors, requiring significant R&D
Signal comes in large pulses (many photons)
Pulses come at 120Hz
October 12, 2004
X-ray detectors
John Arthur
[email protected]
Several types of x-ray detector will be built
Beam imaging detector
Beam intensity monitor
Streak camera
2-d scattered-x-ray detector
October 12, 2004
X-ray detectors
John Arthur
[email protected]
Beam imaging detector (DESCOPED)
Low-resolution, low dynamic range, fast
Used primarily for alignment
Could be identical to diagnostics camera developed by LLNL
Only specification is funded in current plan, no design or procurement
Funding could be added (from unused contingency)
Backup plan is to use diagnostics camera
October 12, 2004
X-ray detectors
John Arthur
[email protected]
Beam intensity monitor
Very-low-resolution, high dynamic range, fast
Used for pulse intensity monitoring/normalization
Could be similar to diagnostics camera developed by LLNL
October 12, 2004
X-ray detectors
John Arthur
[email protected]
Streak camera (DESCOPED)
Used for alignment, course time synchronization
Only specification is funded in current plan, no design or procurement
Funding could be added (from unused contingency)
No good backup plan yet
October 12, 2004
X-ray detectors
John Arthur
[email protected]
LCLS 2-d x-ray detector
Many LCLS experiments will produce diffuse scattering patterns
2-d detector needs
Moderate-wide angular range
Moderate dynamic range (103)
Low spatial resolution (1k x 1k or less)
120 Hz frame rate
October 12, 2004
X-ray detectors
John Arthur
[email protected]
LCLS 2-d x-ray detector
Detector technologies
CCD
Diode pixel array
Relatively mature technology
Needs R&D to reach 120 Hz
Tremendous potential
120 Hz no problem
Not commercial
Needs lots of R&D
October 12, 2004
X-ray detectors
John Arthur
[email protected]
LCLS 2-d x-ray detector
LCLS detector R&D plan
Begin with 1-year R&D contract (~$140k) to Gruner group
at Cornell to investigate pixel array detector
After FY05, decide whether and how to continue
If OK progress, continue R&D in FY06
Make decision on final procurement prior to FY07
Goal: experiment-ready detector by 1-1-09
Backup: CCD detector running at 10 Hz
October 12, 2004
X-ray detectors
John Arthur
[email protected]
Other LCLS detector efforts
The LCLS Endstation Instruments Project (a separate DOE project from the
LCLS construction project) will also be funding detector development at the
multi-M$ level
Detector development within the two LCLS-related projects will be closely
coordinated, to maximize development impact and avoid duplication of
effort
October 12, 2004
X-ray detectors
John Arthur
[email protected]
LCLS x-ray detector advisory committee
Will provide advice on detector development efforts within both LCLS projects
G. Derbyshire, Rutherford Appleton Lab, Chair
Y. Amemiya, Tokyo Univ.
E. Eikenberry, Swiss Light Source
L. Strueder, Max Planck Inst.
A. Walenta, Univ. Siegen
maybe one more
First meeting early 2005
October 12, 2004
X-ray detectors
John Arthur
[email protected]
LCLS input to detector project
Managed by a senior scientist within the Endstation Systems
group (to be hired in FY05)
October 12, 2004
X-ray detectors
John Arthur
[email protected]
Summary
LCLS will build several prototype detectors as part of the construction
project, useful for alignment and data taking
The parallel LCLS Endstation Instrument project will also build/buy
detectors for data taking
All detector development will be coordinated by SLAC, with advice
from the external LCLS x-ray detector advisory committee
Some of the desired detector systems are not included in the current
project scope
October 12, 2004
X-ray detectors
John Arthur
[email protected]