estb test beam upgrades hadrons shorter bunch length carsten hast march 17 th 2011
Post on 19-Dec-2015
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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 mm and shorter
• In A-line, bunch length increases to 280 mm due to strong bends (24o) and large (optics) R56
• With existing optics: 20-30 mm bunch length is possible if one manages to reduce R56 by a factor 3-4 and keep sE=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