- 1 The Development of Large-Area Psec-Resolution TOF Systems What is the intrinsic limit as long as TOF as long as rel. particles Major advances as long as TOF measurements: Major advances as long as TOF measurements: Major advances as long as TOF measurements:
- 2 Lee, Cindy Food and Wine Editorial Assistant
- 3 Journal Ratings by Strayer University-Warrendale Campus
The Development of Large-Area Psec-Resolution TOF Systems What is the intrinsic limit as long as TOF as long as rel. particles Major advances as long as TOF measurements: Major advances as long as TOF measurements: Major advances as long as TOF measurements:
Lee, Cindy, Food and Wine Editorial Assistant has reference to this Academic Journal, PHwiki organized this Journal The Development of Large-Area Psec-Resolution TOF Systems Henry Frisch Enrico Fermi Institute in addition to Physics Dept University of Chicago With Karen Byrum in addition to Gary Drake (ANL); Tim Credo, Harold S in addition to ers, in addition to Fukun Tang (UC) What is the intrinsic limit as long as TOF as long as rel. particles Typical path lengths as long as light in addition to electrons are set by physical dimensions of the light collection in addition to amplifying device. These are now on the order of an inch. One inch is 100 psec. Thats what we measure- no surprise! (pictures swiped from T. Credo talk at Workshop) Major advances as long as TOF measurements: 1. Development of MCPs with 6-10 micron pore diameters Micro-photograph of Burle 25 micron tube- Greg Sellberg (Fermilab)
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Major advances as long as TOF measurements: 2. Ability to simulate electronics in addition to systems to predict design per as long as mance Output at anode from simulation of 10 particles going through fused quartz window- T. Credo, R. Schroll Jitter on leading edge 0.86 psec Major advances as long as TOF measurements: 3. Electronics with typical gate jitters 1 psec Simulation with IHP process- Fukun Tang (UC) Geometry as long as a Collider Detector r is expensive- need a thin segmented detector Coil 2 by 2 MCPs Beam Axis
Measure track length with high precision Silicon Detectors with ~10 micron spatial resolution+ magnetic spectrometer A real CDF event- r-phi view Key idea- fit t0 (start) from all tracks Generating the signal Use Cherenkov light – fast
Anode Structure dum RF Transmission Lines Summing smaller anode pads into 1 by 1 readout pixels An equal time sum- make transmission lines equal propagation times Work on leading edge- ringing not a problem if segmentation is fine enough (5 particles/unit rapidity/collision) Mounting electronics on back of MCP- matching dum Conducting Epoxy- machine deposited by Greg Sellberg (Fermilab) Harolds TOF System dum
Tangs work in IHP design tools dum Tims Equal-Time Collector dum 4 Output points each to a TDC chip Equal time transmission-line trace Whuf as long as Kaon ID in same-sign tagging in B physics (X3 in power in CDF Bs mixing analysis) Separating b from b-bar in measuring the top mass (lessens combinatorics Identifying csbar in addition to udbar modes of the W to jj decays in the top mass analysis (need this once one is below 1 GeV, I belive Separating out vertices from different collisions at the LHC in the z-t plane Identifying photons with vertices at the LHC (requires spacial resolution in addition to converter ahead of the TOF system Locating the Higgs vertex in H to gamma-gamma events at the LHC (mass resolution) Fixed target geometries- LHCb, kaon experiments, etc. Super-B factory Etc.- this is an area that needs work in collaboration with theorists Non-HEP uses- PET, astro, nuclear, (see UC workshop web page as long as examples)
Successes Have a simulation of Cherenkov radiation in MCP- out to anode Have placed an order with Burle- have the 1st of 4 tubes in addition to have a good working relationship (their good will in addition to expertise is a major part of the ef as long as t) Have licence in addition to tools from IHP working on our work stations- Tang is adept in addition to fast working with them. Looks good (so far) Have modeled DAQ/System chip in Altera (Jakob Van Santen- 4th yr). ANL has put together a test st in addition to with working DAQ, identified a laser in addition to is ordering it, has made contact with advanced accel folks, etc. We have 3D EM frequency-domain modelling software to find the Greens function as long as a duck, model the MCP/anode/collector, etc. Harold in addition to Tang have a good grasp of the overall system problems in addition to scope, in addition to have a top-level design plus details Have found Greg Sellberg at Fermilab to offer expert precision assembly advice in addition to help (wonderful tools in addition to talent!). The Hard Parts- Reality Havent yet plugged in a device- all simulation Harold in addition to Paul Mitchell (Burle) have taught us that the hard part is the return path from MCP-OUT to the Gd Paul also says that capacitive coupling of the signal from MCP out is visible- we need to underst in addition to the circuit. Havent yet submitted a design to IHP- dont know the realities of making chips Have no idea, in addition to no equipment, on how to test these chips when we get them Have ideas, but not real ones, on how to measure device per as long as mance when we actually get them. Last week- got Burle MK-0 (our name)- many thanks! Paul Mitchell has done nice things- wonderful test bed as long as underst in addition to ing
Simulating the Electrical properties of the MCP-OUT-anode world Courtesy of Tim in addition to Ansoft: using the HFSS package- just to show weve started on this (this is ending on a happy note- no conclusions- The End! Next Steps THE END Start testing the MK-0 device we have (ANL) Underst in addition to the electrical circuit in the MCP in addition to specify the next model (MK-I) we want Finish the design in addition to place the order to IHP as long as the 1st chip.
Lee, Cindy Food and Wine Editorial Assistant
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Journal Ratings by Strayer University-Warrendale Campus
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