Post on 03-Jan-2016
Current status of high k scattering systemCurrent status of high k scattering system
J. Kim1, Y. Ren2, K-C. Lee3 and R. Kaita2
1) POSTECH2) PPPL
3) UC DavisNSTX Monday Physics Meeting
LSB-318, PPPLJuly 27, 2009
NSTXNSTX Supported by
College W&MColorado Sch MinesColumbia UCompXGeneral AtomicsINELJohns Hopkins ULANLLLNLLodestarMITNova PhotonicsNew York UOld Dominion UORNLPPPLPSIPrinceton UPurdue USNLThink Tank, Inc.UC DavisUC IrvineUCLAUCSDU ColoradoU IllinoisU MarylandU RochesterU WashingtonU Wisconsin
Culham Sci CtrU St. Andrews
York UChubu UFukui U
Hiroshima UHyogo UKyoto U
Kyushu UKyushu Tokai U
NIFSNiigata UU Tokyo
JAEAHebrew UIoffe Inst
RRC Kurchatov InstTRINITI
KBSIKAIST
POSTECHASIPP
ENEA, FrascatiCEA, Cadarache
IPP, JülichIPP, Garching
ASCR, Czech RepU Quebec
NSTXNSTX NSTX Monday Physics Meeting – Current status of High k (Kim) July 27, 2009 2
Topics related to high k system performance
• Upgrade for remote control of optics
• Data acquisition system
• Status of Channel 3
• Scattered signal
• Noise
NSTXNSTX NSTX Monday Physics Meeting – Current status of High k (Kim) July 27, 2009 3
Status of Remote Control
• Upgrade for remote control of optics– Launch Mirror horizontal sweep X Need to purchase
new drive component to provide higher torque
– Launch Mirror vertical sweep O (operational)– Collection Mirror horizontal sweep O (operational)– Exit Window Mirror horizontal sweep O (operational)– Exit Window Mirror vertical sweep X Not needed– Attenuation control X Under design
NSTXNSTX NSTX Monday Physics Meeting – Current status of High k (Kim) July 27, 2009 4
Improvement of Data Acquisition System
• DAQ• Related to order data from digitizers were archived after
each shot– After adding another D-tAcq board for FIReTIP to the high k pc, DAQ
errors occurred more frequently than before. Task Force figured out the problem immediately and effectively. Related to order data from digitizers were archived after each shot
NSTXNSTX NSTX Monday Physics Meeting – Current status of High k (Kim) July 27, 2009 5
Status of Channel 3
• Mixer for Channel 3 not working– No replacement at PPPL or UC Davis– Mixer sent to UC Davis for repairs
• All four other channels operational
NSTXNSTX NSTX Monday Physics Meeting – Current status of High k (Kim) July 27, 2009 6
Issues with Scattered Signal
• No problem in getting scattered signal– Alignment of system being checked periodically
NSTXNSTX NSTX Monday Physics Meeting – Current status of High k (Kim) July 27, 2009 7
Scattered signal
•Wed, Jul 22, 2009 (XMP26)R~ 120 cm
NSTXNSTX NSTX Monday Physics Meeting – Current status of High k (Kim) July 27, 2009 8
Scattered signal (continued)
•Fri, Jul 24, 2009 (XMP26)R~ 120 cm
NSTXNSTX NSTX Monday Physics Meeting – Current status of High k (Kim) July 27, 2009
Scattered signal (continued)
•Mon, Jul 27, 2009 (XP916)R~ 120 cm