• from José Repond: energy-flow calorimetry [Chekanov, Drake, Kuhlmann, R.Magill, Musgrave, Repond, Stanek, Yoshida]. Click here for more detailed information. Briefly:
  • algorithms and accurate simulation
  • absorber thckness, etc. optimization
  • analog vs. digital readout
  • possible use of RPCs as active medium

• from Harald Johnstad: Detector systems, simulations, test beam facility

• from Kwang-Je Kim: High brightness electron injector. We [Wei Gai, K.-J. Kim, J. Lewellen] will study the beam dynamics of high brightness electron beams:
  1. production
  2. Transport
  3. Flat beam generation
  4. Compression

  We will carryout theory and simulation, and a coordinated beam experiments using the L-band injector at Argonne Wakefield Accelerator(AWA) and the S-band injector at the Advanced Photon Source (APS).

• From Gerry Abrams:
  accelerator control system issues:
  • architecture and requirements
  • assessment of daq, communications, computing capabilities which may be available, including field busses, LANs, back-planes, real-time DSPs/cpus, ...
  • analysis of interactions among/between subsystems:
    • operator and the top-level control;
    • detector and top-level control;
    • specialized subsystem (e.g. a feedback loop) and top-level control
    • integration of large subsystem (e.g. damping rings) into overall control
    • integration of hardware protection and control
  
  
  
• From Larry Doolittle:
  The key item I see that ties many others together is ID 79, "robot to replace electronic modules in tunnel"....

  Regarding ID 19, "new electronics standard - VME replacement".... This subject interconnects with ID 79 (robot), field wiring connector selection, most of the electronics initiatives (like 3, 18, 22, 24, 25, 26, 28, 44, 46, 53, and 84), and the phase/frequency reference distribution "cable plant".

  I have ideas for ID 33 "bunch length monitor via spectral measurement", which is in fact related to ID 65 "Optical Diffraction Radiation".
  
  Click here for more detailed information.
  
  

• From Young-Kee Kim: We [Kim, Kolomensky] are interested in RF BPM (tilt meter)

• calorimetry

• from Yasuo Fukui: We [Bishofberger, Cline, Fukui, Zhou] are currently interested in the R&D of the Optical Diffractive Radiation beam monitor in the accelerator R&D.
  
  
• from James Rosenzweig:
  • I have instructed our guys to set up Nick with UCLA(/FNAL) PARMELA, the currently maintained version at UCLA. You should have it soon.
  • I am interested in getting involved in perhaps initiatives for the NLC:
    a) permanent magnet quadrupole work.
    b) undulator design for positron sourcery.
    c) polarized/asymmetric emittance rf gun.

• Helical undulator for polarized positron source.

• Abner Soffer: vibration stabilization and neutron detector (for IR background)

• Gerry Dugan (with Cornell accelerator group)
  • 1. Review of TESLA damping ring design and investigation of fast kicker options;
  • 2. Superferric options for NLC and/or TESLA damping ring wigglers.
  
  
  
• Don Hartill (with Cornell accelerator group)
  • 1. Beam size monitors: optical interferometer, laser wire, optical transition radiation (with Jesse Ernst, Albany; K. Honscheid, OSU; S. Csorna, Vanderbilt);
  • 2. Beam position monitors
  • 3. Global Accelerator Network demonstration Cornell
  
  
  
• Alexander Mikhailichenko: R&D for a polarized positron source using a helical undulator.
  
  
• Hasan Padamsee (with Cornell superconducting RF group)
  • 1. Studies of field emission and DC and RF breakdown on Nb and Cu surfaces
  • 2. Studies of the sources of high-field Q-slope and quench field in Nb cavities
  • 3. Studies of pulsed operation of Nb cavities at high gradients
  • 4. Improvements in high-gradient Nb cavity fabrication
  • 5. Study of methods to improve Q and the consequences for linear collider parameter optimization
  • 6. Studies of Nb3Sn and MgB2 as superconducting cavity materials
  • 7. TESLA cavity design studies to improve efficiency;
  • 8. Investigation of use of 9-cell TESLA HOM coupler to obtain beam position information
  • 9. Studies of TESLA cavity tuner design (warm motors)
  • 10. Development of US vendors for TESLA 9-cell cavities
  
  
  
• Mark Palmer: damping ring studies such as putting wigglers in CESRc; beam size measurements; simulations; helical undulators
  
  
• Ritchie Patterson, Lawrence Gibbons, Dave Rubin, Brian Heltsley (with Cornell accelerator group)
  • 1. Simulations of beam halo from damping ring to IP
  • 2. Simulations of spin transport (source to damping rings, damping rings to IP)
  • 3. Simulations of main beam transport (source to damping rings, damping rings to IP).
  
  
  
• Joe Rogers (with Cornell accelerator group). Damping ring experiments with CESR-c:
  • wiggler-related dynamic aperture
  • intrabeam scattering; space charge effects
  • electron cloud effects
  • ion effects
  • computational beam dynamics for damping rings
  
  
  

• David Winn: cerenkov compensation calorimetry (see University of Iowa entry for more information).

• Gene Fisk: scintillator-based muon system
  
  
• William Wester: LC Vertex Detector R&D. Click here for more detailed information; briefly, though:
  • thinned structures
  • radiation hardness studies
  • faster readout
  
  
  
• Helen Edwards: polarized photo injector

• Nikos Varelas: calorimetry

• Calorimetry
  
  
• creation of a sophisticated test beam facility
  
  
• one(or more) of a number of accelerator physics topics including ultrasound sensors to localize cavity breakdown; fast and/or stable kicker systems; low-level RF 500 MHz ADC and/or DAC systems; accelerator control/feedback systems and algorithms;
  
  
• a combination of "the list" ID-19 and ID-79 ("new electronics standard - VME replacement" and "robot to replace electronic modules in tunnel") to the extent that they are connected, i.e. developing an electronics (packaging) standard that can be machine-serviceable.
  
  
• Flowmeters!

• Detector R&D:

  In collaboration with Mike Hildreth at Notre Dame, investigate bunch id timing using a intermediate scintillating fiber tracker. With the bunch structure of the NLC beams giving bunches only 1.4 nsec apart, simulation studies already performed show significant impact on Higgs events with missing energy when 2-photon events from prior or subsequent bunches are overlaid on top of the event of interest. A system with sub-nsec timing could identify which bunch tracks came from.

  Specifically, two or three layers of scintillating fibers would be physically mounted directly on the inner radius carbon fiber structure of a TPC. Readout using visible light photon counters can potentially result in a system timing resolution with the needed resolution. Would also investigate the utility of having fibers mounted on the outer radius of a TPC.

  A ~400 channel system (3 layers of fibers) in conjunction with refurbished prototype/reject ATLAS transition radiation tracking modules (with carbon fiber shells) will be used in cosmic ray tests with differing scintillating fiber formulations and latest VLPC's from Rockwell to confirm needed timing and position resolutions.

  First year cost estimate (parts, equipment only; no travel or personnel included): $110k (budget in web page to follow).

  Follow up studies could include tests of embedding such fibers in to calorimeter detector systems to also allow timing of shower clusters from neutral particles. This would be done collaboratively with groups investigating calorimeter systems.

  Click here for more information.
  
  

• Accelerator R&D:

  Still interested in university-based accelerator R&D. There is an enthusiastic accelerator physics faculty here, S.Y. Lee, who uses the Indiana Univ. cyclotron for many beam studies. He is also a very active user at sites such as FNAL, BNL, and CERN. However, we have not had the time to decide on a project. The above detector R&D is certain for submitting as a proposal, and at least for this first round, probably all we can handle at least this first year but we would like to expand in the future.

• from Yasar Onel: cerenkov compensation calorimetry. Click here for more information.

  Some of us are also interested in beam polarization measurements and polarimeters for LC.

• Jon Hautpman: We are planning to work on the bunch-to-bunch lum measurement and have talked to Tom Markiewicz about this. (Oleksiy Atramentov will report on "Explicitly Radiation Hard Fast Gas Cerenkov Calorimeter" at UCSC meeting)
  
  
• Eli Rosenberg: We have previously expressed an interest in working with the accelerator people in developing beam diagnostics as a first round project. This couples with resources here at Iowa State.

• Graham Wilson: We're currently planning on doing work on the evaluation of the electro-magnetic calorimeter design. In a first stage this is likely to be simulation driven - looking at some of the trade-offs in granularity, sampling and radius. I have a hunch that the best (and affordable) approach for "energy-flow" electromagnetic calorimetry may be a hybrid design with Tungsten absorber and both Si-pad and scintillator readout. Higher sampling fraction, lower cost and timing potential of scintillator are some of the advantages, however how to ensure a successful integration of a "hybrid" design is not so clear.

  I think there's quite a lot of room for synergy with the HCAL scintillator efforts, although the requirements for ECAL are much more demanding.

  This activity would naturally evolve towards prototype testing and test-beam work.

• Sekazi Mtingwa (MIT/North Carolina A&T):
  • Damping ring studies at ATF (intrabeam scattering, electron cloud, ion instabilities, injection efficiency and transients, beam-radiation interactions)
  • Compton backscatter on spent beams for photon physics
  
  
  
• Dick Yamamoto: beam monitoring
  
  
• Richard Temkin:
  Statement of Interest: Proposed MIT PSFC R&D for LC

  The MIT Plasma Science and Fusion Center is interested in joining a consortium to pursue research in support of a TeV Linear Collider (LC). Our interests are in understanding the physics and engineering of high gradient structures and transmission lines based on room temperature copper cavities.

  A serious problem in the development of a room temperature copper structure for the proposed NLC / JLC is understanding the highest possible accelerating gradient at which such structures may be safely operated. A great deal of research has been conducted at frequencies in the 2.856 to 11.4 GHz range to understand this problem. Much of that work is empirical and an understanding of breakdown from a fundamental or microscopic point of view is still lacking. MIT PSFC proposes to undertake theoretical and experimental research on the problem of breakdown in copper cavities and structures. Since this is in part a plasma physics problem, our strength in plasma phenomena should prove very helpful. MIT PSFC has available extensive equipment at 17.1 GHz for application to the experimental portion of the research, including a 25 MW klystron and a 0.5 m, 25 MeV electron accelerator system. We may also propose to contribute new ideas for transmission lines, distribution systems, delay lines, switches, etc. for the NLC system.

  Richard Temkin, MIT PSFC, June 14, 2002
  Phone: 1-617-253-5528
  Email: temkin@psfc.mit.edu
  http://www.psfc.mit.edu/wab/
  

• Dan Amidei: modeling of beam sources; guns; polarized rf; comparison w/ data from A0
  
  
• Dave Gerdes: I am most likely interested in accelerator topics, but am not sure yet what direction I'll pursue.

• From Harry Weerts: probably accelerator-related topic(s) [Huston, Weerts]
  
  
• From Martin Berz: At the present time, it seems that we can make contributions in the following areas; there may also be others.
  • Final focus nonlinear effects, aberrations, correction
  • Beam transport between source, damping rings, IP
  • Spin transport
  • General Beam Dynamics Simulations

• ...has a cpu farm used for Monte Carlo work which could be used for other simulations. Possible topic: simulation of beam transport (emphasis on damping rings)

• laser wire beam size monitor
  
  
• surface issues in structures: breakdowns, dark currents
  
  
• beam halo monitors
  
  
• radiation hardness of materials

• muon detector, vertex detector??

• Beam size monitors: optical interferometer, laser wire, optical transition radiation (with K. Honscheid, OSU; S. Csorna, Vanderbilt; D. Hartill, Cornell)
  
  

• Dhiman Chakraborty and others: Calorimetry.
  
  
• Dave Hedin and others: Muon system.
  
  
• Jerry Blazey and others:
  Northern Illinois Center for Accelerator and Detector Development (NICADD) web site
  Fermilab NICADD Photoinjector Laboratory site
  Photoinjector Three (Pi3) site
  
  
• C. Bohn: photoinjector issues-- nonlinear processes, bunch compression, space charge

• Mayda Velasco: Ground motion studies at NUMI; gamma-gamma prototype at SLC

• Tracking: development of an intermediate scintillating fiber tracker with precise bunch timing information
  
  
• Calorimetry: development of optimized scintillator/readout system for HCAL
  
  
• Muon System: development of optimized scintillator/readout system for Muon
  
  
• Machine-Detector Interface: Development of Energy Spectrometer prototype support/alignment/mover system

• Klaus Honscheid:
  • Beam size monitors: optical interferometer, laser wire, optical transition radiation (with Jesse Ernst, Albany; D. Hartill, Cornell; S. Csorna, Vanderbilt)
    
    
  • Global Accelerator Network demonstration (with T. Wilksen, OSU)
    
    
• K.K. Gan: low-level rf: 500 MHz ADC/DAC. Click here for more detailed information;

• From Mlke Strauss:
  OU has a long history of working with silicon detector for HEP applications. OU and Ohio State were the first two universities to apply silicon technology for HEP detectors back in 1984. We have been involved in silicon testing and development of hardware for CLEO, D0, and now working with developing and testing flex hybrid connectors for the ATLAS pixel detector. So one of our main areas of interest is in silicon hardware work. We are interested in doing pixel research for the CCD vertex detector, as well as possibly testing and development for the silicon central tracker.

  In addition to hardware, I wrote most of the tracking and pattern recognition software for the SLC CCD vertex detector. So we are interested in software development and Monte Carlo studies of silicon related tracking for both the CCD vertex detector option, as well as the silicon tracking option.

• Daniela and Ian: Development of thin silicon for the hybrid pixel vertex detectors or for silicon trackers. We have funding under the DoE ADR prosal to investigate thin silicon and are just beginning to get started.
  
  
• Ian: MicroPattern Gas Detector (MPGD) readout for a TPC. We have many years experience working with MPGDs, especially GEMS and Micromegas. We have collaborated in the past with many of the European and Canadian groups who are working on the TESLA TPC readout. Our work for the LC will be a collaboration with Cornell. We will build a small protype TPC and read it out with a MPGD. Jun Miyamoto, a senior scientist with the MPGD group, will make a presentation at Santa Cruz. A project description is available.
  
  
• Ian: Accelerator physics. The electron cloud effect. The physics of breakdown: fundamental limitations in accelerating gradients. Beam diagnostics.
  
  

Note that, for the TPC readout we are going to request funds through the NSF consortium in the first instance.

• Marc Ross: disrupted beam diagnostics
  
  
• A note from Tom Himel:
  There is a lot of vibration work (both final doublet and linac girder) going on at SLAC. We presently are talking to CERN, DESY, and England about collaborating with us on the final doublet work. FNAL is planning to start work on the linac girder. These things are NOT going to be part of a proposal, but we should make sure people know about the efforts.

• From Andy White:

  The UTA group is working on the development of digital hadron calorimetry for use with energy flow algorithms. Specific topics include:

  • Digital hadron calorimeter design using the Gas Electron Multiplier (GEM) approach.
  • GEM cell and module design
  • GEM prototype construction and testing
  • On-board electronics design for digital readout
  • Studies of particle fluxes and discharge rates in GEM cells
  • Development of simulation software including CAD to GEANT4 link
  • Use of simulation software to develop energy flow algorithm(s)

• William Oliver: beam monitors

• Beam size monitors: optical interferometer, laser wire, optical transition radiation (with Jesse Ernst, Albany; D. Hartill, Cornell; K. Honscheid, OSU)
  
  
• Possible high brightness electron source studies with C. Brau, B. Feng, B. Gabella (Vanderbilt)

• From Paul Karchin: Scintillation Muon Detector R&D. Click here for more detailed information.

• High gradient breakdown and pulse heating limit experiments at 34.3 GHz.