BESⅢ漂移室全長模型實驗研究.pdf

1、學(xué)校代號學(xué)號密級10532S03072006湖南大學(xué)碩士學(xué)位論文Y89258f)BESIII漂移室全長模型實驗研究雯僮由境厶蛙為；芒盍匿昱垣蛙魚盈腿疊i一豳丞塹塾援彗差里焦!塑匿態(tài)堂廛旦物堡丕童業(yè)名整i徽里王生皇固佳直王堂迨塞量童旦塑12QQ生2旦15H熊窯簦趲旦塑；!!豎璽!旦塹旦簦堂委雖盒圭迸i置主熬援墼i塵堡塹薹塞蘭堡型蘭墼至蜜AbstractTheBeijingElectronPositionCollider(BEPC)andt

2、heBeijingSpectrometer(BES)areupgradingnowThedriftchamberisaveryimportantdetectorinBESThefulllengthprototypeisdesignedtosimulatethesmallcellsruetureoftheBESIIIdriftchamber(DC)veritably，studythewholefunctionandoptimizework

3、ingparametersforMDCwithstereowireandfulllength，Atfirst，itdescribesstructureofthefulllengthprototype，manufacturingcraftandpreparetowork，includingsting，sealing，wiretensionandleakcurrentmeasurement，mountingofthePreamp，gassy

4、stem，highvoltagesystem，reductionofnoiseandSO011Theconstructionoffull—lengthprototypeprovidedvaluableexperienceandimportantreferencetotheBESIIIdriftchamberThengoodfunctionofthefull—lengthprototypewasperformedusing55Fe59Ke

5、yX_raysourcewecanseethattheuniformityofgasgainofthefulllengthprototypeiswellanditiseffectiveforthecompensationvoltagetoaajUsttheuniformityofgasgainoftheboundarycellsCosmicraytestwascarriedouttochooseandoptimizeworkingpar

6、ametersoffull—lengthprototypeanditsdataacquisitionsystem，verifytheelectronicssystemaboutdynamicrange，drifttimemeasurementsearchwindow，chargemeasurementintegralwidth，workstabilityandelectronicsgroundingandnoise，Inexperime

7、nt，acquiredabundantexperiencewiththesolutionofactualproblemandverifiedtheirreliabilityofphysicaldesignThislaysthefoundationsforthesuccessfulconstructionoftheBESIIIdriftchamberandelectricalsystemInordertotakefurtherresear

8、chofperformaceandoptimizeworkingparametersinstrongmagneticfield，BeamtestwascarriedoutThetestresultsshowedthatthefulllengthprototypeanditsdataacquisitionsystemcouldworksuccessfullyinthestrongmagneticfieldwithgoodperforman