GSI - BEA Wiki

User Tools

Site Tools

Trace:
instruments:overview:ccc

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision 		Previous revision
Next revision Both sides next revision
instruments:overview:ccc [2015/12/16 11:27]
phebyn 		instruments:overview:ccc [2022/02/07 07:46]
dhaider [Further Information]
Line 1: Line 1:
 =====Cryogenic Current Comparator (CCC)===== =====Cryogenic Current Comparator (CCC)=====
-The CCC is a cryogenic DC beam current transformer. It measures the intensity of lowest beam currents, circulating in storage rings, or extracted through high energy beam transport lines. The present best values, obtained with a thin-film DC SQUID at 4 K, are: +The CCC is a cryogenic DC beam current transformer. It measures the intensity of lowest beam currents, circulating in storage rings, or extracted through high energy beam transport lines. The present best values, obtained with a thin-film DC SQUID at 4.2 K, are: 
  
   * Current resolution < 6-120 pA/sqrt(Hz) (within a bandwidth of DC-10 kHz)   * Current resolution < 6-120 pA/sqrt(Hz) (within a bandwidth of DC-10 kHz)
Line 24: Line 24:
 After successful re-commission of the existing GS-CCC system and a number of optimization measurements, this CCC system was used as a test bench for measurements for with the new sensor and data acquisition units. The dc SQUID sensor and the associated electronics developed at FSU, Jena was replaced by commercial alternatives based on modern technology. The system was then installed at the extraction section of SIS18 and successful beam measurements were done during spring 2014 beam time followed by extensive offline tests. Apart from the already known zero drift, the offline tests revealed strong instantaneous dependence of temperature/pressure of the liquid helium cryostat on the CCC output. These investigations are still under progress to confirm the origin of these influences and to minimize them in the future systems.\\ After successful re-commission of the existing GS-CCC system and a number of optimization measurements, this CCC system was used as a test bench for measurements for with the new sensor and data acquisition units. The dc SQUID sensor and the associated electronics developed at FSU, Jena was replaced by commercial alternatives based on modern technology. The system was then installed at the extraction section of SIS18 and successful beam measurements were done during spring 2014 beam time followed by extensive offline tests. Apart from the already known zero drift, the offline tests revealed strong instantaneous dependence of temperature/pressure of the liquid helium cryostat on the CCC output. These investigations are still under progress to confirm the origin of these influences and to minimize them in the future systems.\\
 \\ \\
-[[projects:CCC:drawings|drawings of the existing GSI-CCC prototype (selected)]]\\ +==== Further Information ====
-\\+
 [[projects:CCC:papers|Publications highlighting basics and details of CCCs]]\\ [[projects:CCC:papers|Publications highlighting basics and details of CCCs]]\\
 +\\ 
 +[[projects:CCC:documentation|CCC technical documents]]\\ 
 +\\ 
 +Positioning of first Cryocompressor for CCC "T1S1DT1Y": {{ :instruments:overview:kuehlwasser18ccc.pps |Positionierung Cryo-Kompressor}}  !\\ 
 +\\ 
 +CCC elog: https://elog.gsi.de/CCC/CCC/ \\
instruments/overview/ccc.txt · Last modified: 2022/09/01 09:19 by carsten

Page Tools

Donate Powered by PHP Valid HTML5 Valid CSS Driven by DokuWiki