About heat measuring devices particle detectors Calorimeter particle physics Image Ice calorimeter.jpg 150px right thumb The world s first ice calorimeter , used in the winter of 1782 83, by Antoine Lavoisier ... of thermochemistry . A calorimeter from Latin calor , meaning heat is a device used for calorimetry ... and accelerated rate calorimeters are among the most common types. A simple calorimeter just ... substances A and B, the substances are added to a calorimeter and the initial and final temperature ... inside the calorimeter show that the objects transferred their heat to the calorimeter and into the liquid, and the heat absorbed by the calorimeter and the liquid is equal to the heat given off by the metals. Adiabatic calorimeters An adiabatic process adiabatic calorimeter is a calorimeter used to examine a runaway reaction. Since the calorimeter runs in an adiabatic environment, any heat generated ... the reaction. br No adiabatic calorimeter is truly adiabatic some heat will be lost by the sample ... are THT EV Accelerating Rate Calorimeter ref http www.thermalhazardtechnology.com products ev accelerating rate calorimeter THT EV ARC ref HEL Phi Tec ref http www.helgroup.com home reactor systems ... deal of smoke. Reaction calorimeters Main Reaction calorimeters A reaction calorimeter is a calorimeter ... for measuring the heat in reaction calorimeter Heat flow calorimetry The cooling heating jacket controls ... at a correct value. It is possible with this type of calorimeter to do reactions at reflux, although the accuracy is not as good. Heat balance calorimeter The cooling heating jacket controls the temperature ... File Bombenkalorimeter mit bombe.jpg thumb Bomb calorimeter A bomb calorimeter is a type of constant volume calorimeter used in measuring the heat of combustion of a particular reaction. Bomb calorimeters have to withstand the large pressure within the calorimeter as the reaction is being measured ... air, which expands and escapes through a tube that leads the air out of the calorimeter. When the air ... more details
A calorimeter constant denoted C sub cal sub is a Constant mathematics constant that quantifies the heat capacity of a calorimeter . It may be calculated by applying a known amount of heat to the calorimeter and measuring the calorimeter s corresponding change in temperature . In SI units, the calorimeter constant is then calculated by dividing the change in enthalpy H in joule s by the change in temperature T in kelvin s or degrees Celsius math C cal frac Delta H Delta T math The calorimeter constant is usually presented in units of joules per degree Celsius J C or joules per kelvin J K . Every calorimeter has a unique calorimeter constant. Uses The calorimeter constant is used in Calorimetry Constant pressure constant pressure calorimetry to calculate the amount of heat required to raise the contents of the calorimeter by a change in temperature. Example For example, to determine the change in enthalpy in a neutralization reaction H sub neutralization sub , a known amount of Base chemistry basic solution may be placed in a calorimeter, and the temperature of this solution alone recorded. Then, a known amount of Acid chemistry acidic solution may be added and the change in temperature measured using a thermometer . The difference in temperature T , in units K or C may be calculated by subtracting the initial temperature from the final temperature. The enthalpy of neutralization H sub neutralization sub may then be calculated according to the following equation math Delta H neutralization C cal times Delta T math . Regardless of the specific chemical process , with a known calorimeter constant and a known change in temperature the heat added to the system may be calculated by multiplying the calorimeter constant by that change in temperature. See also Thermodynamics References reflist External links Category Thermochemistry Category Calorimetry ... more details
Orphan date February 2009 A cone calorimeter is a modern device used to study the fire behavior of small samples of various materials in condensed phase. It is widely used in the field of Fire protection engineering Fire Safety Engineering It gathers data regarding the ignition time, mass loss, combustion products, heat release rate and other parameters associated with its burning properties. Device usually allows the fuel sample to be exposed to different heat fluxes over its surface. The principle for the measurement of the heat release rate is based on the Huggett s Cone calorimeter References 1 principle that the gross heat of combustion of any organic material is directly related to the amount of oxygen required for combustion. Its name comes from the conical shape of the radiant heater that produces a nearly uniform heat flux over the surface of the sample under study. References code nowiki 1 nowiki code Huggett, C., Fire and Materials. 4 2 , 61 65, 1980 External links http www.doctorfire.com cone dwg.gif A diagram of a cone calorimeter http www.specialchem4polymers.com documentspa indexables editorial articles 891 images fig8.jpg A color diagram of a cone calorimeter Category Laboratory equipment chem stub Category Fire prevention Category Fire protection ... more details
Image Rc1 calorimeter.jpg thumb Original RC1 Calorimeter A reaction calorimeter is an Measuring instrument instrument that measures the amount of energy Exothermic released or Endothermic absorbed by a Chemical reaction reaction . These measurements provide a more accurate picture of such reactions. Applications Safety When considering scaling up a reaction to large scale from lab scale, it is important to understand how much heat is released. At a small scale heat released may not cause a concern, however when scaling up, that heat can build up and be extremely dangerous. Crystallization Crystallizing a reaction product from solution is a highly cost effective purification technique. It is therefore valuable to be able to measure how effectively crystallization is taking place in order to be able to optimise it. The heat absorbed by the process can be a useful measure. Chemical kinetics Kinetics The energy being released by any process in the form of heat is directly proportional to the rate of reaction and hence reaction calorimetry as a time resolved measurement technique can be used to study kinetics. Process development Process Development The use of reaction calorimetry in process development has been historically limited due to the cost implications of these devices however calorimetry is a very fast and easy way to fully understand the reactions which are conducted as part of a chemical process . Reaction Calorimetry Techniques Heat Flow Heat flow calorimetry works by looking at the heat flowing across the reactor wall and quantifying this in relation to the other energy flows within the reactor. math Q quad U A Tr Tj math where math Q math process heating or cooling power W math U math overall heat transfer coefficient W m sup 2 sup K math A math heat transfer area m sup 2 sup math Tr math process temperature K math Tj math jacket temperature K Heat flow calorimetry ... An example of a Co Flux Calorimeter Constant Flux A recent development in calorimetry however is that of constant ... more details
In particle physics , a calorimeter is an experimental apparatus that measures the energy of subatomic particle particles . Most particles enter the calorimeter and initiate a particle shower and the particles energy is deposited in the calorimeter, collected, and measured. The energy may be measured in its entirety, requiring total containment of the particle shower, or it may be sampled. Typically, calorimeters are segmented transversely to provide information about the direction of the particle or particles, as well as the energy deposited, and longitudinal segmentation can provide information about the identity of the particle based on the shape of the shower as it develops. Calorimetry design is an active area of research in particle physics. Types of calorimeter Electromagnetic versus hadronic An electromagnetic calorimeter is one specifically designed to measure the energy of particles that interact primarily via the electromagnetism electromagnetic interaction , while a hadronic calorimeter is one designed to measure particles that interact via the strong nuclear force . See particle shower Types of showers types of particle showers for the differences between the two. The response of a calorimeter can be described in terms of the e h ratio. This is the measure of how well a calorimeter responds to leptons or photons versus hadrons. Ideally one would want a ratio e h 1, this condition is called compensation. Homogeneous versus sampling Either of the above types can be made as a sampling calorimeter, in which the material that produces the particle shower is distinct .... A homogeneous calorimeter is one in which the entire volume is sensitive and contributes a signal ... form of calorimetry. In large colliding experiments like ATLAS or ZEUS , the calorimeter works in conjunction ... together to achieve the objective of reconstructing a physics event. See also Calorimeter for other ... Calorimeter section of The Particle Detector BriefBook DEFAULTSORT Calorimeter Particle Physics ... more details
Image ATIC launch.jpg thumb right 200px Launch of ATIC The Advanced Thin Ionization Calorimeter ATIC is a balloon aircraft balloon borne instrument flying in the stratosphere over Antarctica to measure the energy and composition of cosmic rays . ATIC was launched from McMurdo Station for the first time in December 2000 and has since completed three successful flights out of four. ref name nyt Cite news last Overbye first Dennis title A Whisper, Perhaps, From the Universe s Dark Side work The New York Times date 2008 11 25 url http www.nytimes.com 2008 11 25 science 25dark.html?8dpc &pagewanted all ref Working principle The detector uses the principle of ionization calorimetry several layers of the scintillator bismuth germanate emit light as they are struck by particles, allowing to calculate the particles energy. A silicon matrix is used to determine the particles electrical charge . ref http atic.phys.lsu.edu aticweb Instrument.html Instrument description , LSU Space Science group. Retrieved 23 November 2008 ref Collaborators The project is an international collaboration of researchers from Louisiana State University , University of Maryland, College Park , Marshall Space Flight Center , Purple Mountain Observatory in China, Moscow State University in Russia and Max Planck Institute for Solar System Research in Germany. ATIC is supported in the United States by NASA and flights are conducted under the auspices of the Balloon Program Office at Wallops Flight Facility by the staff of the Columbia Scientific Balloon Facility . Antarctic logistics are provided by the National Science Foundation and its contractor Raytheon Polar Services Corporation. The principal investigator for ATIC is John Wefel of Louisiana State University. Image ATIC closeup.jpg thumb left 150px Team and closeup of the instrument Results In November 2008, researchers published in Nature the finding ... Thin Ionization Calorimeter ... more details
Summary Fig. 1. Basic features of China Lake isoperibolic calorimeter from Szpak & Mosier Boss, Thermal and Nuclear Aspects of the Pd D2 System Volume 1 , TR1862, Space and Naval Warfare Systems Center, San Diego. authors S. Szpak & P. A. Mosier Boss source http www.nosc.mil sti publications pubs tr 1862 tr1862 vol1.pdf, pg. 30 Licensing PD USGov Military Copy to Wikimedia Commons bot Svenbot ... more details
Orphan date February 2011 The APTAC Automatic Pressure Tracking Adiabatic Calorimeter is an analytical instrument for measuring enthalpy changes and Blood pressure pressure changes quantitatively. ref cite doi 10.1007 s10973 006 7651 x ref ref cite doi 10.1007 s10973 005 6982 3 ref It was originally designed by Arthur D. Little Arthur D Little References Reflist Category Medical testing equipment Category Medical technology Medical equipment stub ... more details
Image EURECA logo.jpg thumb right The EURECA logo The European Underground Rare Event Calorimeter Array EURECA is a planned dark matter search experiment using cryogenic detectors and an absorber mass of up to 1 tonne. The project will be built in the Modane Underground Laboratory and will bring together researchers working on the Cryogenic Rare Event Search with Superconducting Thermometers CRESST and EDELWEISS experiments ref H. Kraus et al. 2006 EURECA the European future of cryogenic dark matter searches Journal of Physics Conference Series 39 139 141. http dx.doi.org 10.1088 1742 6596 39 1 031 doi 10.1088 1742 6596 39 1 031 . ref ref H. Kraus et al. 2007 EURECA the European Future of Dark Matter Searches with Cryogenic Detectors Nuclear Physics B Proc. Suppl. 173 168 171 http dx.doi.org 10.1016 j.nuclphysbps.2007.08.043 doi 10.1016 j.nuclphysbps.2007.08.043 . ref . EURECA featured prominently in the Aspera European Astroparticle network ASPERA road map of Astroparticle Physics experiments in Europe ref http www.aspera eu.org images stories roadmap aspera roadmap.pdf Astroparticle Physics, the European Strategy ASPERA Roadmap . ref Dark matter Main Dark matter Dark matter is one of the significant Unsolved problems in physics unsolved problems in modern science. There is considerable evidence from astronomy and cosmology that a significant fraction of the mass of the Universe, and of galaxies is made up of non luminous material. The nature of dark matter is currently unknown. However a popular hypothesis is that it consists of Weakly interacting massive particles Weakly Interacting Massive Particles WIMPs , particles with a large mass, but which only interact with ordinary matter through the weak interaction weak nuclear force , so the majority that pass through the Earth do not hit a single atom. The aim of dark matter search experiments such as EURECA is to test this hypothesis by searching for WIMP dark mater interactions. WIMPs are predicted to exist by supersymmetry ... more details
EURECA may refer to European Retrievable Carrier , a European Space Agency scientific satellite mission The European Underground Rare Event Calorimeter Array , a dark matter search experiment See also Eureka disambiguation disambig ... more details
For the food Shashlik In high energy physics detector s, shashlik refers to a pile of alternating slices of absorber e.g. lead and scintillator materials crystal or plastic used in calorimetry . ref http rkb.home.cern.ch rkb PH14pp node19.html Calorimeter Bot generated title ref The absorber has a small interaction length, so that a particle radiates energy in a short track. The scintillator material produces visible light when transversed by the particle s radiated energy. This occurs with an electromagnetic calorimeter , in the form of photon s and or electron positron pairs. The energy of the particle may be then measured by the intensity of scintillation light produced by the various scintillator slices. An example detector that uses a shashlik electromagnetic calorimeter is the LHCb detector. ref http lhcb calo.web.cern.ch lhcb calo html TDR calo tdr node48.html LHCb calorimeter technical design report ref This type of calorimeter was likely named after the shashlik , a popular form of shish kebab sold by street vendors in the former Soviet Union , by the Russian and Ukrainian scientists who first proposed it. ref http www.intas.be catalog 92 0024.htm ref References references Particle stub Category Calorimetry Category Particle physics ... more details
uranium plastic scintillator calorimeter , a central tracking detector which is a wire chamber , a silicon .... The main components of the ZEUS detector were the tracking components, the calorimeter and the muon ... the reconstruction of physics events in a consistent way so they can be analyzed. Calorimeter Image zeus calorimeter.JPG thumb right The ZEUS barrel calorimeter as dismantling of it started. The ZEUS Calorimeter particle physics Calorimeter was a uranium scintillator based calorimeter sampling calorimeter and divided into 3 main sections the BCAL Barrel CALorimeter , FCAL Forward CALorimeter , and RCAL Rear CALorimeter . Each section was subdivided transversely into towers, and longitudinally into EMC Electro Magnetic Calorimeter or HAC HAdronic Calorimeter . The smallest subdivision in the calorimeter .... Uranium was chosen as an absorber so that the calorimeter would be compensating. ref name ZEUSLOI Electrons and photon s deposit energy differently from hadron s, but in a compensating calorimeter the response ... energy, i.e. nowrap begin e h 1 nowrap end . ref cite web title Compensating Calorimeter url http ... 2011 11 10 ref In the ZEUS calorimeter pion neutral pions interacted with uranium atoms to produce ... advantage of using uranium as the absorber was that the natural radioactivity allowed the calorimeter ... more details
Summary Information Description Zeus calorimeter. Source I created this work entirely by myself. Date July 2008 Author User Luis Sanchez Luis Sanchez User talk Luis Sanchez talk other versions Licensing self cc by sa 3.0 GFDL Copy to Wikimedia Commons bot Fbot priority true ... more details
Orphan date October 2009 The CALICE CAlorimeter for LInear Collider Experiment collaboration https twiki.cern.ch twiki bin view CALICE is R&D group of more than 280 physicists and engineers from around the world, working together to develop new, high performance detectors for high energy positron electron math e e math experiments at future International Linear Collider ILC . It is a part of European EUDET project. The physics requirements of a future TeV scale math e e math machine such as the ILC demand extremely high performance calorimetry. This is best achieved using a finely segmented system that allows to reconstruct events using the so called Particle Flow Approach PFA . ref J. C. Brient, Improving the jet reconstruction with the particle flow method An introduction, Prepared for 11th International Conference on Calorimetry in High Energy Physics Calor 2004 ,Perugia, Italy, 28 March 2 April 2004. ref The calorimeter systems for high energy physics experiments usually consist of three main subsystems electromagnetic calorimeter ECAL to detect electromagnetic showers produced by electrons or positrons and photons, hadronic calorimeter HCAL to measure hadron induced showers, and muon tracker or so called tail catcher to identify highly penetrating particles such as muons . CALICE ... calorimeter HCAL called physics prototype for study series in various test particle beams . Image ... a combined test beam program involving exposure of combined prototype calorimeter system to real particle ... calorimeter Silicon Tungsten ECAL near 1 math lambda math in thickness and followed by a 5 ... calorimeter has been calibrated to get its signal vs. the incident particle energy dependence using .... The corrections for the calorimeter non linearity and the external temperature influence have been ..., it is possible to reconstruct their energies using the picture of particle showers born in the calorimeter ... showers in order to improve the energy reconstruction. The unprecedented granularity of CALICE calorimeter ... more details
Summary Information Description It is a simple diagram of a heat flux differential scanning calorimeter Source User Mrcreelman Mrcreelman User talk Mrcreelman talk Special ListFiles Mrcreelman Uploads Date Author User Mrcreelman Mrcreelman User talk Mrcreelman talk Special ListFiles Mrcreelman Uploads Permission other versions BadJPEG Licensing PD self date July 2007 Copy to Wikimedia Commons bot Fbot Orphan image ... more details
Summary Information Description Simple representation of a Power compensated differentail scanning calorimeter. Source User Mrcreelman Mrcreelman User talk Mrcreelman talk Special ListFiles Mrcreelman Uploads Date Author User Mrcreelman Mrcreelman User talk Mrcreelman talk Special ListFiles Mrcreelman Uploads Permission other versions BadJPEG Licensing PD self date December 2004 I made this image myself. Copy to Wikimedia Commons bot Fbot Orphan image ... more details
Summary Calorimeter, engraving made by Lavoisier in the 18th century. Explanation M, contains the body, heated to the given temperature, which is to pass its heat on to its environment and melt ice the central one, A, contains ice the outer one, B, protects the ice, which after all is only to accept heat from the body inside, from any heat coming from outside and is therefore likewise filled with ice. Source http kr.cs.ait.ac.th radok physics j9.htm Licensing pd art ... more details
Summary SRI International Type Flow Calorimeter Surrounding Cold Fusion Cell. Drawing by Craig Erlick. From the book The Rebirth of Cold Fusion Real Science, Real Hope, Real Energy by S.B. Krivit and N.Winocur. Freely licensed by Pacific Oaks Press S.B. Krivit, publisher. Contact information www.newenergytimes.com. Licensing GFDL migration relicense Orphan image ... more details
Calorimeter particle physics Calorimeters slow particles down and absorb their energy into a material ... calorimeter that specializes in absorbing particles that interact electromagnetism electromagnetically , and the hadronic calorimeter that can detect hadrons , which interact via the strong nuclear ... Of all the known stable particles, only muon s and neutrino s pass through the calorimeter without ... and then deposits all of its energy in the electromagnetic calorimeter. By contrast, a photon is neutral and interacts electromagnetically, so it deposits its energy in the calorimeter without leaving ... more details
dablink This article is about a particle physics experiment. For nuclear weapons tests, see Operation Argus . The ARGUS experiment was a particle physics experiment that ran at the electron positron collider ring DORIS II at DESY . It is the first experiment that observed the mixing of the B meson s in 1987 ref ARGUS Collaboration, DESY preprint 87 029, April 1987. Published in Phys.Lett.B192 245,1987. ref . The ARGUS detector was a hermetic detector with 90 coverage of the full solid angle. It had drift chamber s, a time of flight system, an electromagnetic Calorimeter particle physics calorimeter and a muon chamber system. ref The ARGUS Collaboration, H. Albrecht et al., Nucl. Instrum. Methods A 275 1 1989 , p. 1 48. ref External links http argus fest.desy.de introduction.html Webpage of ARGUS Fest , a symposium to commemorate the 20th anniversary of the discovery of B meson oscillations. Last accessed on Sept. 10, 2007 References references DEFAULTSORT Argus Experiment Category Particle physics particle stub ... more details
A pair conversion instrument detects high energy gamma rays by providing an environment generally a thin foil of dense metal, commonly tungsten in which they tend to generate electron positron pairs, and then using standard particle physics techniques such as a microstrip detector to detect these particles. Usually there are several stacks of conversion foils and particle detectors placed on top of one another, so that the electron positron pairs can be tracked as they pass through consecutive detectors and at the bottom of the stack one commonly finds a calorimeter particle physics calorimeter capable of measuring the energy of the electron and the positron and inferring the energy of the incoming gamma ray. An anticoincidence shield of some kind is needed so that charged particles entering the device from outside are not confused with electron positron pairs generated in the conversion foils. One of the larger operational pair conversion telescopes is the Large Area Telescope on Gamma ray Large Area Space Telescope GLAST . Space based pair conversion detectors tend to make for rather expensive missions, since they unavoidably contain several hundred kilograms of lead or tungsten. http cosmology.berkeley.edu inpac inpac retreat slides Hiroshima 3 9.pdf has a slide illustrating the design of LAT. Category Photonics ... more details
ATIC can refer to ATIC Records ATIC, a gene which codes inosine monophosphate synthase Advanced Thin Ionization Calorimeter , a balloon borne experiment to detect cosmic rays Advanced Technical Intelligence Center , an educational institution focusing on technical intelligence Atic Atac , a video game for the ZX Spectrum Advanced Technology Investment Company , an investment company from Abu Dhabi , owned by Mubadala Development Company . Australian Transformation and Innovation Centre , a computer laboratory run by Thales Australia See also Attic disambiguation disambig de ATIC ... more details
Summary logo fur REQUIRED Article European Underground Rare Event Calorimeter Array Use Org HIGHLY RECOMMENDED Source http www.eureca.ox.ac.uk ADDITIONAL INFORMATION Used for This is the EURECA experiment logo Owner Website History Commentary OVERRIDE FIELDS Description Portion Entire logo is used Low resolution The logo is a size and resolution sufficient to maintain the quality intended by the company or organization, without being unnecessarily high resolution. Purpose The image is used solely for identification purposes. Replaceability Because it is a logo there is almost certainly no free equivalent. other information Licensing Non free logo ... more details
calorimeter High energy particle calorimetercalorimeter , but do not appear in the tracking chamber .... A neutral pion which decays inside the EM calorimeter can replicate this effect. Electrons Electron s appear as a track in the inner detector and deposit all their energy in the electromagnetic calorimeter. The energy deposited in the calorimeter must match the momentum measured in the tracking ... more details
Chemical Reaction, using a Reaction calorimeter This will allow a good measure of not only the reaction ... scanning calorimeter Reactive screening device Calorimeter Adiabatic calorimeters Adiabatic calorimeter ... more details
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