PPT-LHCspin : a polarized internal target for the LHC

PSTP2019 Knoxville Tennessee September 26 th 2019 P Lenisa University of Ferrara and INFN for the LHCspin study group 2 A bit of pre history Tefloncoated storage cell filled with polarized H proposed by Prof W . Machine development for spin-filtering experiments at COSY. P. Lenisa. Università. di Ferrara . and. INFN, . Italy. SPIN 2014 – Beijing, . October. 21, 2014. Motivation. The PAX . collaboration. XIII  WORKSHOP ON HIGH ENERGY SPIN PHYSICS . Dubna, Russia . September 1 - 5, 2009. . AZIMUTHAL ASYMMETRIES IN SEMI-INCLUSIVE PRODUCTION OF HADRONS ON THE LONGITUDINALLY POLARIZED DEUTERIUM TARGET. Magnet. Microwaves. Target Ammonia. UVA/SLAC/JLAB Target. Magnet. After SANE, and operation over 20 years in sometimes extreme conditions, magnet returned to Oxford Instruments for . retuning.. Diagnosis was that magnet had become unstable over the years because of relaxation of the clamping of the coils.. on Neutron . Single . Target . Spin Asymmetries from Transversely . polarized . 3. He . target at . Jlab. Nilanga Liyanage . , . University of Virginia. . Recent SSA . Results from . JLab. Hall A with a Transversely Polarized . bandgap. energy illuminates a negative electron affinity (NEA) . GaAs. . photocathode, spin-polarized electrons are emitted [2, 3]. The degree of polarization is defined to be . where . N. ↑. and . Function in . Polarized . Drell. -Yan. fundamental QCD prediction. :. Polarized . Drell. -Yan . at Fermilab. polarized . Beam . (E-1027) . or. . Target. (E-1039). Main Injector Polarization Scheme. D. iffraction at HFIR HB-3A. flipper. Collimator with guide field. S-bender supermirror polarizer. HB-3A. High neutron polarization ratio (>94%) and a good transmission (16% based on the diffraction on a 2 mm size .  . R2 = 249k . . . R3 = 2.8k . . R4 = 10k . . R5 = 10k . . R6 = 100k . . R7 = 8.06k . . R15 = 1k .  . R16 = 100 . . . R17 = 2.8k . . R18 = 2.8k . . R19 = 2.8k . David Kashy. Hall B Lead Engineer. May 26, 2010. CLAS. Cryogenic Components. Transfer line from ESR. 6 coil torroidal field magnet with . s. ervice module –built by Oxford Instruments . operating . Kurt . Aulenbacher. ,. Institut für Kernphysik, . Johannes Gutenberg-Universität Mainz. . Geneva, . June . 23. th. , . 2017. Work . supported. . by. DFG . through. excellence . cluster. PRISMA . Spin Asymmetries and TMDs. Jian. -ping . Chen , Jefferson Lab. QCD Evolution Workshop, . JLab. , May 6-10, 2013. . Recent SSA . Results from . JLab. Hall A with a Transversely Polarized . 3. He (n). By. Yu. Kiselev. , N. Doshita, F. Gautheron, C. Hess, T. Iwata, J. Koivuniemi, W. Meyer. Polarized target group at COMPASS . . Historic point #1: . The paper “. Experimenteller. . Nachweis. . der. LL2 section 50. m. onochromatic plane wave. Constant. complex vector,. defines polarization state,. which is definite (elliptical). Approximately monochromatic plane wave. Contains frequencies in some interval . for Physics. e. +. @ MESA. Low-energy positron physics . Slow positron physics. Polarized positron production. . Conclusions. Eric Voutier. . Institut de Physique Nucléaire. Orsay, . France.