accelerator r&d at brookhaven national lab
DESCRIPTION
Accelerator R&D at Brookhaven National Lab. HEP Accelerator Test Facility Muon Collider/Neutrino Factory R&D Superconducting Magnet Division BES NSLS Complex NP RHIC Complex. Accelerator R&D at BNL - HEP Program. Accelerator Test Facility(Vitaly & Bob will describe in more detail) - PowerPoint PPT PresentationTRANSCRIPT
Accelerator R&D at Brookhaven National Lab
• HEP– Accelerator Test Facility– Muon Collider/Neutrino Factory R&D– Superconducting Magnet Division
• BES– NSLS Complex
• NP– RHIC Complex
Accelerator R&D at BNL - HEP Program
Accelerator Test Facility (Vitaly & Bob will describe in more detail)Hands-on User facilityExperimental Program via proposals & program committeeHigh brightness electrons (75 Mev) + High powered synchronized
laser4 beam-lines with ~ 10 experiments at any given timeFacility Support via HEP & BES (20%) (~$2.5M)Moved from the Light Source to the Physics Department (3 years ago)~ 8 FTE’s
IssuesFlat-flat funding over past several yearsEnhanced safety requirements increase demands on in-house staff
Accelerator R&D at BNL - HEP Program
Muon Collider/Neutrino Factory R&DStrong BNL presence since the inception of these studies. Bob’s
group have been “high profile” in both the Neutrino Factory and Muon Collider design studies, and continue to play such a role
BNL takes the lead in the targeting studiesFFAG based designsHome of the ICOOL simulation code~ 6 FTE’s
IssuesAfter several years of benign neglect of the muon collaboration, the
recent activity in neutrino super-beams has injected some interest into high power targets/horns
Progress in other areas is slow
Accelerator R&D at BNL - HEP Program
Superconducting Magnet DivisionLHC -> LARP (NbSn magnet development) ~$2M in FY06ILC final focus R&D ~$600K in FY06 (mini-magnets, vibration, IP design)
SC materials development - NbSn, MgB2, BSSCO, YBCO ~$700K~ 14 FTE’s
Issues:Cable test facility closed this year (lack of operating funds)
300 MeV S-Band Linac 300 MeV S-Band Linac
Titanium Sapphire LaserTitanium Sapphire Laser
BNL Photoinjector IVBNL Photoinjector IV
Chicane CompressorChicane Compressor10 m NISUS Wiggler 10 m NISUS Wiggler
Accelerator R&D at BNL - BES Program
NSLS Source Development Lab: A Platform for FEL R&D
(ONR funds)
Cutting Edge Experiments @ SDLCutting Edge Experiments @ SDL
SASE @ 400 nm
0.23 nm FWHMSASE x105
Wavelength (nm)
HGHG
HGHG FEL @ 266 nm
Beam Dynamics
XUV Photochemistry
-1 0 1
-1
0
1
X-Position [mm]
Elec
tric
Fiel
d (k
V/cm
)
-80
-60
-40
-20
0
20
40
60
80
High Intensity THz
High Brightness Beams
Accelerator R&D at BNL - BES Program
VUV Ring Coherent Emission Studies
Bursts of Coherent IR
Interferometer studies Pcoherent/Pincoherent> 104 (at ~40 GHz)
Microbunching ?
Streak camera studies
Frequency agrees with Z||() Microbunching due to
microwave instability
B.Podobedov, G.L.Carr, S.L.Kramer and J.B. Murphy
Accelerator R&D at BNL - BES Program
Accelerator R&D at BNL - NP Program
The RHIC complex is a major accelerator facility. In a few years it will be the only US high energy hadron collider and together with the LHC one of two in the world. The polarized proton program is unique.
The R&D is mostly what this Committee would call short/medium term: largely determined by the operation of the RHIC complex (with a surprising degree of synergy with the LHC)
Numerous beam dynamics issues are under study.– PLL tune & coupling feedback (real time coupling signal)– Beam-Beam (present proton limit)
• Long range beam-beam compensation (with wires)• Head on beam-beam compensation (with an electron lens)
– E-cloud studies (present heavy ion limit)– Non linear IR corrections – Polarized beam dynamics (low energy spin flip, cold & warm partial
snakes in the AGS, full snakes in RHIC, polarized source, polarimeters, polarized beam simulations)
– HI collimation and beam loss studies
Accelerator R&D at BNL - NP Program
Short luminosity lifetime (few hours) for heavy ion collisions due to IBS cries out for beam cooling. IBS goes as ~ (Z/2)2 so Au ions ~ 3 orders of magnitude worse than protons. For polarized protons cooling both enhances polarization lifetime and luminosity.
Cooling R&D:– Microwave stochastic cooling (HI up to 100 GeV)– High Energy (50 Mev) e-cooling ( HI up to 100 GeV, Proton inj)– Optical stochastic cooling (protons 100 GeV and above). Possible
test at Bates with MIT.
Accelerator R&D at BNL - NP Program
The e-cooling R&D program in itself is major activity:• SCRF Gun development (with ONR & AES)
– 703 MHz CW, Iav = 0.5A, Qbunch 1.4 nc, Ekin 2 Mev, Emit 4 mm-mrad rms
– First tests June 2007 ?• Energy Recirculating Linac R&D
– Prototype ring under construction– 703 MHz SC cavities from AES
Accelerator R&D at BNL - Summary
HEP supports specialized R&D activities at BNL which take advantage of the talents of the staff and facilities developed during the long HEP tenure as landlord.
HEP accelerator R&D has been on a slow decline during the past decade.
Although BES and NP do not obviously engage in R&D with the goal of developing the next generation of high energy facilities they do support accelerator R&D at BNL which does share a non-negligible synergy with HEP. It certainly helps support the gene pool and maintain the intellectual vitality.