gerald c. blazey northern illinois center for accelerator and detector design

Fermilab User’s MeetingJune 11, 2002

University AcceleratorResearch and Development @ Fermilab(Ongoing Projects and Opportunities for

getting started)

Gerald C. Blazey

Northern Illinois Center for Accelerator and Detector Design

(http://nicadd.niu.edu)Northern Illinois University


Why?• An interesting field in its own right, with interesting

challenges and questions.• Laboratories dominating the LC landscape

(there is a well developed program for advanced concepts)

• Shortage of qualified physicists and resources committed to design and construction of new machines, both novel and “conventional”.

• Promotion of university programs in cooperation with existing HEP programs will foster innovation and increase number of qualified individuals.

• With regards to the linear collider much of our material and intellectual resources will be required.


Two Efforts• Illinois Consortium for Accelerator Research

(ICAR)• The Fermilab/NICADD PhotoInjector (FNPL)

High Brightness PhotoInjector (HBPI)

• The linear Collider research topic database• The evolving consortia/working groups

– University Consortium for the Linear Collider (UCLC) centered at Cornell

– Linear Collider R&D Working Group at Fermilab– Linear Collider R&D Opportunities at Stanford/SLAC

Opportunities


Illinois Consortium of Accelerator Research

• 1999, IIT organized university consortium

• 2000, IIT, NIU, NW, UC, UIUC received funding from NSF and state of Illinois

• Current budget ~$2.5M/yr which supports in whole or part ~25 faculty and scientists.

• Resulted in three new accelerator faculty positions.


ICAR Activities• Muon cooling

– Simulations and theoretical investigations– Absorber development and engineering– Fast Instrumentation– RF cavity mechanical design– Linac Test Beam at Fermilab

• Neutrino factory feasibility studies I & II• Proton Driver physics and design studies• Photoinjector R&D for LC• collider studies• Outreach: surveys, citizen involvement


Absorber, Magnet prototype

Site of Linac LH2 Absorber Beam Test

Cryo ready in one year.


Photogrammetric studies of window performance (minimum heating, heat management, safety)

Beam detection and profiling using bolometry (strips of material on the

absorber window that change resistance when

radiated.)

Focus onComponentTesting


FNPL• Electron source @ A0 • Jointly operated by

Fermilab/NICADD• Beam Physics • International Facility

(Chicago, Georgia, Michigan, NIU, Rochester, Fermilab, DESY, CERN, LBNL)


FNPL Activities• Beam Physics

– Flat Beam Studies– Plasma Wakefield Acceleration– Laser Acceleration– Studies of Space Charge– Coherent Synchrotron Radiation Studies

• Electron Beam Diagnostics• Superconducting RF Cavity Development• RF Gun Development• Theses

– Five completed– Three current (plasma and laser acceleration, flat

beams)• Open to new collaborators, ideas!


Flat beam generation could simplify requirements for Linear collider electron damping rings!

Energy Fragmentation post bunch compression degrades luminosity and FEL

capabilities.

Simulation of wakefield acceleration through plasma shows 72 MeV/cm gradient.

Experimentally confirmed!

E

Beam Energy Profile

Emittance Ratio~40


A High-Brightness Photoinjector

• A collaboration modeled on large detector collaborations for the construction and operation of a high-brightness electron beam at Fermilab.

• Five year construction, then operation.• Advanced beam research and machine

development promotes university based research• The collaboration presently includes seven

universities and three laboratories. • Have encouragement from Fermilab. Site selection

and timescales under discussion.


Notional Layout of Photoinjector(as envisioned by DESY)

Emittance ~1 micron, Bunch Length <270 micronsEnergy 140300 MeV


The LC R&D List• Tom Himel, SLAC, has assembled a database

of accelerator LC R&D in response to requests from the university community.

• Contains a wide variety of priorities, project sizes, and needed skills.

• About 80 NLC, TESLA, and generic accelerator R&D items are on the list

• On Web: http://www-project.slac.stanford.edu/lc/Project_List/intro.htm


List ExampleID: 16 Priority: Medium project_size: Large skill_type: physicist

short project description: superconducting quadrupole vibration test

Detailed project description: There are two options for the final doublet magnets: permanent and superconducting. The main concern about the superconducting method is that coils will vibrate too much since a strong support to the cryostat would cause a big heat leak, and boiling helium may jiggle the coils. Either by calculation, or finding an appropriate magnet, convince people that the quadrupole fields center will move by less than a nm relative to the outside of the cryostat.

Needed by who: NLC and TESLA present status: good idea needed Needed by date: 6/1/2005

ContactPerson1: Joe Frisch WorkPhone1: 6509264005 EmailAddress1: [email protected]

Note that the contact person is someone who knows more about the project. He’s not the person who will arrange who works on what.


New Organizations– Framework for detector/accelerator R&D on LC.

– Currently:

• 3 evolving groups (Cornell, Fermilab, SLAC)

• 2 funding agencies (NSF & DOE)

• 1 Linear Collider

– Relationships evolving

• NSF groups naturally cluster under a single proposal submitted by Cornell?

• DOE groups naturally cluster w/ Fermilab & SLAC under a single proposal?

• But work where convenient & communicate!

• Proposals vetted by the USLCSG Working Groups


History/Upcoming Dates

• April 5th, Fermilab Meeting, 123 participants• April 19th, University Consortium for the Linear

Collider @ Ithaca, 55 participants• May 30th, Linear Collider R&D Opportunities @

SLAC, 106 participants• June 27-30th , Santa Cruz

– Linear Collider Retreat w/ Acc. R&D Sessions.– UCLC statements of interest– Joint Fermilab/SLAC meetings

• September, NSF submission


Suggested Topics at Fermilab• NLC Structures• Vibration Analysis• Permanent Magnets• Injectors: FNPL and upgrade &

simulations• Beam Instrumentation• Plenty of opportunity for

post-docs/students.Group meets twice monthly.


Conclusions

• There is significant and increasing university sponsored R&D occurring at Fermilab.

• The skill set is similar to HEP.• There is ample opportunity to get involved.• Support comes from the universities and

funding agencies – we have to convince one another.

• The new organizations offer a likely opportunity!

gerald c. blazey northern illinois center for accelerator and detector design

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