50 Recent Changes in Compass/PolarizedTarget Web retrieved at 03:41 (GMT)
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NorihiroDoshita 2022 01 17 17/01/2022 PT meeting PT meeting ( pdf): Norihiro DOSHITA 31/01/2022 PT meeting PT meeting ( pdf): Norihiro DOSHITA 14/02/2022 PT...
Microwaves Two EIO microwave tubes (Varian VKE 2401P1 and 2401P2) are used to generate the necessary power to polarize the target material. The frequency is close...
Slides Slides related to COMPASS PT including those for meetings outside CERN are summarized. 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012...
19/01/2021 TB meeting TB meeting ( pdf): Michael Pesek 02/02/2021 PT meeting PT meeting ( pdf): Norihiro DOSHITA 16/02/2021 PT meeting PT meeting ( pdf): Norihiro...
Target loading The target operation starts with precooling of the magnet to 100 K with liquid nitrogen. At the same time the mixing chamber is also cooled to...
Target holder The target material is filled into target cells. The cells are made of polyamide mesh with aramide epoxy support structure. The target cells were 3 cm...
Helium 4 pumps start Before the pumps are started the helium 4 evaporator is precooled with cold gas from the separator. The needle valve NV5 is used to control the...
15/12/2020 PT meeting PT meeting 16/02/2021 (pdf): Norihiro DOSHITA NorihiroDoshita 2021 02 17
15/12/2020 Gunn diode meeting First test of Gunn diode ( pdf ) : Norihiro DOSHITA 03/11/2020 Technical Board Target status ( pdf ) : Norihiro DOSHITA...
Useful links (former Alcatel Vacuum Technology) Technologies (former HP) http://www.angst pfister.com Angst Pfister Fine Wire Magnetic...
See the attachements. JaakkoKoivuniemi 2013 02 05
Polarization data The nuclear polarization is a number between 1 and 1. It can be scaled by a factor of one hundred for convenience, but should not be shown as precentage...
Dilution cryostat monitoring and control system The dilution cryostat is monitored with a LabVIEW program. The DRmanual describes the previous LabVIEW implementation...
10/12/2019 PT meeting Current status, overview 2019 () : Norihiro Doshita Status of NMR ( pdf ) : Genki Nukazuka 12/11/2019 Technical Board Target...
Slides in 2018 2018 04/12/2018 PT meeting Current status ( pptx ) : Norihiro DOSHITA Quick analysis of the TE and empty cell measurements in Novermber...
Dilution cryostat gas flows On June 23 2007 in frozen spin mode with 4He roots running. The FM1 was calibrated for nitrogen and the value needs to be multiplied with...
Dilution cryostat temperature See also DilCryoPres. Resistive thermometers based on semiconducting material are used in the dilution cryostat and magnet. 3He vapor...
Polarized target NMR tools Check the tools manual pages and tools HOWTO. The source code is in git ptnmr. To extract values from the Oracle database stored by the...
Polarization Thermal Equilibrium Calibration 2018 Time iSolenoid A LE0001 mm PE0001 bar PV8 mbar P3 mbar TTH4 ohm TTH5 ohm...
Miscellaneous equipments Type or category (be to changed later...) Vibration Meter VM25 Manual GenkiNukazuka 2018 10 04
Welcome to the 1 web Available Information TargetPolarizationData polarization data from different SPS periods TargetMaterial polarized target materials...
Microwave EIO tubes type no. year PSU notes VKE2401P1 SMC for old big PSU VKE2401P4 E1100B8 Yamagata 2008 for CPI VPW...
Target remote monitoring Web browser From outside of CERN and mobile phones for example http://wwwcompass.cern.ch/compass/detector/target/run/ptread.html From COMPASS...
Mixture condensation or recovery The 3He gas is expensive so the condensation or recovery should be done only by a person with good knowledge of the target system...
Target cables Cable numbering scheme is as follows: 200 for thermometer cables, 300 pressure gauge cables, 400 flow meter cables, 500 needle valve cables, 600 level...
Varian VPW2838 On November 14 2015 at 10:00 during polarization build up following values were shown on the power supply name voltage current name...
Dilution Cryostat Level Gauges See the attachments. JaakkoHenrikKoivuniemi 2018 05 29
Polarized Target Frequently Asked Questions (PTFAQ) Operation procedures PolTargOpModes What are the target operation modes? PolTargBuildUp How is the target...
Polarization Buildup 2018 May 23 2018 Time Pol Up % Pol Down % Freq Up MHz Freq Down MHz Speer Up ohm Speer Down ohm Power Up...
6LiD target material polarization Start positive polarization 70200 70210 MHz and speer about 600 ohm negative polarization 70280 70290 MHz and speer...
Slides in 2015 2015 11/11/2015 Technical Board EIO tubes status : Norihiro Doshita 01/10/2015 Collaboration meeting of NH3 target : Jaakko Koivuniemi...
PT Maintenance works for 2018 List of tasks on Tuesday April 10 2018 with estimated time, man power and procurement Edit and use and when task is done...
Helium 3 thermometer The leak detector is used to pump out air from the baratron refence vacuum space and from the flexible line connected to the helium 3 bulb inside...
The helium level (LE0001 mm) of 650 mm height is required to operate the magnet. There is no interlock of the liquid helium dewar (LT800). Once the level decreases...
Pump room air conditioning stop New air conditioning is being installed for run 2018 in pump room 888 R 416. It uses chilled water to remove heat instead of ambient...
Liquid Nitrogen Buffer Dewar Filling Procedure Dewar Top Valves Fig. 1. Cryogenic valves to operate Liquid Nitrogen Dewar. Vertical green valve can be used...
Slides in 2001 2001 GenkiNukazuka 2018 03 24
Slides in 2002 2002 GenkiNukazuka 2018 03 24
Slides in 2003 2003 GenkiNukazuka 2018 03 24
Slides in 2004 2004 GenkiNukazuka 2018 03 24
Slides in 2005 2005 GenkiNukazuka 2018 03 24
Slides in 2006 2006 18/12/2006 Technical Board Target : Jakko Koivuniemi 02/11/2007 Technical Board Polarized Target Removal ( , http://wwwcompass.cern...
Slides in 2007 2007 05/09/2007 DY meeting Energy Deposition in the COMPASS target, Heinz Vincke and Eduard Feldbaumer Status of the polarized target for...
Slides in 2008 2008 06/05/2008 DY meeting Polarized target for DY, Norihiro Doshita 03/04/2008 DY meeting Polarized target for COMPASS Drell Yan program...
Slides in 2010 2010 17/11/2010 DY meeting Microwave cavities for COMPASS polarized targets, Yuri Kisselev 06/09/2010 DY meeting Rate Limitation of The...
Slides in 2011 2011 10/11/2011 Technical Board Tests foreseen in 2011 and prospects for the OD magnet ( , https://espace.cern.ch/na58 mgt tb/Technical%20Board...
Slides in 2012 2012 08/11/2012 Technical Board Status of the OD Magnet Repair, Controls, Supplies ( , https://espace.cern.ch/na58 mgt tb/Technical%20Board...
Slides in 2013 2013 10/12/2013 Technical Board of tests and installation for the superconducting magnet : Fabrice Gautheron for the target installationa...
Slides in 2014 2014 19/11/2014 Technical Board Target Status and Plans for 2015 : Jaakko Koivuniemi PT Magnet Status ( , https://espace.cern.ch/na...
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