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--- hades [2019/06/12 13:40]
bwalasek
+++ hades [2019/07/05 11:01] (current)
vschaefer [Proposal for improvement]
@@ Line 9: / Line 9: @@
   * Proposal 2016 {{ ::walasek_sis18-hades_strahldiagnose.docx |Verbesserungsvorschlag für Strahlführung SIS18-HADES}}
   * Summary 2019 {{ ::hades_upgrade.pptx |HADES Upgrade Zusammenfassung}}
+===== Motivation =====
+HADES is a fixed target experiment using SIS18 heavy ion beams. It investigates the microscopic properties of matter formed in heavy-ion, proton and pion - induced reactions in the 1-3.5 GeV/u energy regime. In 2014 HADES used a secondary pion beam produced by interaction between high-intensity nitrogen primary beam and a beryllium target. In these conditions beam losses, generated by slow extraction and beam transport to the experimental area, led to activation of the beam line elements and triggered radiation alarms. The primary beam intensity had to be reduced and the beam optics modified in order to keep radiation levels within the allowed limits. Similar beam conditions are requested by HADES experiment for upcoming run in 2018 and in the following years. Therefore, a number of measures have been proposed to improve beam transmission and quality. These measures are: additional shielding, additional beam instrumentation, modification of beam optics and increase of vacuum chambers' apertures in critical locations.
+{{::hades_motivation.png?direct&400|}} {{:hades_graph.jpg?direct&600|}}
+Details:
+{{ ::hochstromstrahlzeit_2014_gf_tr_final.docx |}}
+{{ ::ne5_aktivitaetsmessungen_07.06.11_08.07.14.xls |}}
+==== Proposal for improvement ====
+{{ ::proposal_for_improvement_sis18-hades_strahldiagnose.docx |}}
+  * [[Scintillating Screens|Scintillating Screens]]
+  * [[SEM Foils|SEM Foils]]
+  * [[BLM|BLM]]
+  * [[Halo Monitors|Halo Monitors]]

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