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ESTB Test Beam Upgrades Hadrons Shorter bunch length. Carsten Hast March 17 th 2011. Beam Properties at Detector Plane. x =1mm. y =1.4mm. E/E=1.3%. Secondary Hadron Beam Properties. Divide by 4 for 250 pC. ESTB Stage II: Hadron Production. - PowerPoint PPT Presentation
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ESTB Test Beam Upgrades
HadronsShorter bunch length
Carsten HastMarch 17th 2011
C.Hast, ESTB Workshop SLAC, March 2011 2
Secondary Hadron Beam Properties
Beam Properties at Detector Plane
x=1mm y=1.4mm
E/E=1.3%
Divide by 4 for 250 pC
C.Hast, ESTB Workshop SLAC, March 2011 3
ESTB Stage II: Hadron Production
• Add Be target, beam dump, analyzing magnet, momentum slit, and quadrupole doublets to produce a secondary hadron beam
• Production angle = 1.35O and Acceptance = 10 sr
• Move Collimator (BSY)• Design, build and install Be-target (BSY)• Design, build and install insertable dump / collimator (BSY)• Retrieve and install bend magnet (for momentum selection) (ESA)• Retrieve and install 4 quadrupoles (BSY/ESA)• Design, build and install collimator (ESA)• Additional vacuum system (ESA)• Many any other odds and ends
4C.Hast, ESTB Workshop SLAC, March 2011
ESTB Stage II: Components
Serious effort!Needs to be driven by user demand!
C.Hast, ESTB Workshop SLAC, March 2011 5
Shorter Bunch Length for ESTB
• Interest for shorter bunches (CLIC, accelerator R&D, etc)
• LCLS ultra-short bunch length: 10 m and shorter
• In A-line, bunch length increases to 280 m due to strong bends (24o) and large (optics) R56
• With existing optics: 20-30 m bunch length is possible if one manages to reduce R56 by a factor 3-4 and keep E=0.02% Lew, Ted and Jury are looking into that
• Possible to preserve short bunches in ESA with adequate $ support by interested parties …
Summary• Production of Hadrons is possible for late 2012 if
– Demanded by users – Funding is made available
• Short bunch length might be possible– Currently under study– Funding needs to be found
6C.Hast, ESTB Workshop SLAC, March 2011
Production of Hadrons would add
desirable capabilities to ESTB