ionization chambers in the flash dump line
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Ionization Chambers in the FLASH Dump Line
Ionization Chambers in the FLASH Dump Line
Nicoleta Baboi, Petr Smirnov
FLASH Seminar, DESY Dec. 7, 2010
N. Baboi, MDIN. Baboi, MDI FLASH Seminar, Dec. 7, 2010FLASH Seminar, Dec. 7, 2010
ContentsContents
•Overview of Dump Line Diagnostics
•Ionization Chambers� Characteristics� Operational experience
•Summary
N. Baboi, MDIN. Baboi, MDI FLASH Seminar, Dec. 7, 2010FLASH Seminar, Dec. 7, 2010
BPM13DUMP
Dump Line Upgrade 2009Dump Line Upgrade 2009
BPM9DUMP
BPM5DUMP
Toroid9DUMP
OTR screen9DUMP
BLM14DUMP
BLM13.1DUMP13.2DUMP
BLM9DUMP
BLM6DUMP
BLM1.1DUMP1.2DUMP
BPM10DUMP
BPM16DUMP
8 x BHM16DUMP
BLM14R.DUMP14L.DUMP14U.DUMP14D.DUMP
Ionization ChambersI14R.DUMPI14L.DUMPI14U.DUMPI14D.DUMP
N. Baboi, MDIN. Baboi, MDI FLASH Seminar, Dec. 7, 2010FLASH Seminar, Dec. 7, 2010
Dump ChamberDump Chamber
BPM
for glass fibres
for glass fibres
for ionizationchambers
for ionizationchambers
» T. Wohlenberg, M. Schmitz, MDI3
» T. Wohlenberg, M. Schmitz, MDI3
magnetic-coupled
BPM
magnetic-coupled
BPMBHMBHM
N. Baboi, MDIN. Baboi, MDI FLASH Seminar, Dec. 7, 2010FLASH Seminar, Dec. 7, 2010
Ionization ChambersIonization Chambers
� 4 air filled 3/8“ Heliax HF cables� measures O2-
� electronics → large dynamicrange: 10-4 .. 104 µA
� test measurement in FLASHpreviously to installationin DUMP line
� slow (not bunch by bunch)
N. Baboi, MDIN. Baboi, MDI FLASH Seminar, Dec. 7, 2010FLASH Seminar, Dec. 7, 2010
Glass fibers (BLMs) andIonization Chambers DisplayGlass fibers (BLMs) and
Ionization Chambers Display
Vout is displayed
Will change to I !
N. Baboi, MDIN. Baboi, MDI FLASH Seminar, Dec. 7, 2010FLASH Seminar, Dec. 7, 2010
Ionization Chambers (2)Ionization Chambers (2)
200 bunches/pulse
short pulse
voltage (not current) displayed in DOOCS
N. Baboi, MDIN. Baboi, MDI FLASH Seminar, Dec. 7, 2010FLASH Seminar, Dec. 7, 2010
SummarySummary
•Installed in last 2 meters of dump-line
•Contributed to successful run with high current and long pulse trains in Sep. 2009
•Will change display to show I instead of V���
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