118033184
Status of the Compact Muon Solenoid Detector at the Large Hadron Collider
The Compact Muon Solenoid (CMS) detector is being constructed at the Large Hadron Collider (LHC) at CERN for the purpose of exploring new physics in proton‐proton collisions at 14 TeV. The detector is to be designed, constructed and commissioned in time for the start of the LHC in April 2007. This article summarizes the current status of the detector and foreseen program for completion.
2708913
Monolithic CMOS Pixel Detectors for ILC Vertex Detection
A CMOS pixel vertex detector suited for use at the International Linear Collider (ILC) is proposed. The proposed detector consists of 50µm ◊ 50µm macropixels, each with integrated bunch clock memory, on top of 5µm ◊ 5µm micropixels that record amplitude information. The micropixels integrate over all bunch crossing in a train. Using the time recorded by the macropixels, the fine position measurements made in the micropixels can be associated to only a few of the 3000 bunch crossings in a bunch train.
116064451
Chargino and Neutralino Mass Reconstruction for Small Mass Difference Non-Universal Sugra Points
A collapsible, movable apparatus, for containing health-sports devices and equipment, which includes a telescoping post support having at least two telescoping segments and a ratchet device for moving each of the adjacent telescoping segments in relation to each other. There is a support adopted to fit slideably on the top telescoping segment without overlapping onto the next telescoping segment. A large horizontally-positioned ring is mounted on the support. A platform is pivotally mounted under the ring so as to be able to swing downwardly when unconnected from the ring. Also, a basketball backboard is vertically mounted to the top portion of the top telescoping segment. The bottom end of the telescoping post is adapted to fit into a tube positioned in the ground or other horizontal surface.
120215204
Monolithic CMOS pixel detector for international linear collider vertex detection
A monolithic CMS pixel detector is under development for an ILC experiment. This chronopixel array provides a time stamp resolution of one bunch crossing, a critical feature for background suppression. The status of this effort is summarized.
124136703
Improved Constraints on the Neutralino Cold Dark Matter Candidate from the Search for Chargino and Neutralino Production Using the OPAL Detector at 170 ÷ 172 Gev at LEP
New limits on the cold dark matter candidate, the lightest neutralino \(\left( {\tilde x_1^0} \right)\), are obtained from a search for charginos and neutralinos using a data sample of 10.3 pb−1 at the center-of-mass energies of √s =170 and 172 GeV with the OPAL detector at LEP.
111420431
Ideas on DC-DC Converters for Delivery of Low Voltage and High Currents for the SLHC / ILC Detector Electronics in Magnetic field and Radiation environments
For more efficient power transport to the electronics embedded inside large colliding beam detectors, we explore the feasibility of supplying 48 Volts DC and using local DCDC conversion to 2 V (or lower, depending upon on the lithography of the embedded electronics) using switch mode regulators located very close to the front end electronics. These devices will be exposed to high radiation and high magnetic fields, 10 – 100 Mrads and 2 4 Tesla at the SLHC, and 20 Krads and 6 Tesla at the ILC.
116957714
New developments in high energy physics
Some of the important developments in the field of high energy physics are reviewed. Starting from the status of knowledge of the structure of matter the details of experiments leading to the discovery of charmed particles and psi resonances are emphasized. Also some of the areas of activity of the Indiana University High Energy group are reviewed and related to the principal unsolved problems in the field. (JFP)
111321675
Shaping Collaboration 2006: action items for the LHC
Shaping Collaboration 2006 [1] was a workshop held in Geneva, on December 11-13, 2006, to examine the status and future of collaborative tool technology and its usage for large global scientific collaborations, such as those of the CERN LHC [2]. The workshop brought together some of the leading experts in the field of collaborative tools (WACE 2006) [3] with physicists and developers of the LHC collaborations and HENP (High-Energy and Nuclear Physics). We highlight important presentations and key discussions held during the workshop, then focus on a large and aggressive set of goals and specific action items targeted at institutes from all levels of the LHC organization. This list of action items, assembled during a panel discussion at the close of the LHC sessions, includes recommendations for the LHC Users, their Universities, Project Managers, Spokespersons, National Funding Agencies and Host Laboratories. We present this list, along with suggestions for priorities in addressing the immediate and long-term needs of HENP.
125810791
Plans for the study of the spin properties of the Lambda/b baryon using the decay channel Lambda/b ---> J/psi (mu+ mu-) Lambda (p pi-)
123750664
POSITION AND TRACK MEASUREMENT.
121386932
Polarization in p-p elastic scattering at large four-momentum transfers
New results are presented from the continuation of an experiment designed to study the polarization in elastic p-p scattering at large four- momentum transfers. A high intensity unpolarized proton beam of momentum 12.3 GeV/c was incident on a propanediol polarized porton target and both final-state protons were detected and momentum analyzed in multiwire proportional chamber spectrometers. The measurements spanned the t range 1.5 < absolute t < 6.2 (GeV/ c)$sup 2$. The results are discussed in the framework of optical, exchange, and parton models. (AIP)