| 1. |
- Olsson, David, et al.
(författare)
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Increasing the Photon Energy for Photonuclear Experiments in MAX-lab by Phase Modulating the SLED Pulse
- 2016
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- The nuclear physics facility at MAX-lab requires high energy electrons for photonuclear experiments. These electrons are first accelerated in two LINACs that are fed via a SLED system. Arcing in the waveguide structures is currently the limiting factor of the available electron energy. In this report, the implementation of a phase modulation scheme into the injector system is presented. This makes it possible to increase the power delivered to the LINACs and thereby increasing the energy gain without increasing the risk of arcing. Calculations of the available electron energy at the nuclear physics facility using focal plane detectors and tracking code is also presented.
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| 2. |
- Olsson, Teresia, et al.
(författare)
-
Bunch Length Measurements with Passive Harmonic Cavities for Non-Uniform Fill Patterns in a 100 MHz RF
- 2016
-
Ingår i: IPAC 2016 - Proceedings of the 7th International Particle Accelerator Conference. - 9783954501472 ; , s. 2918-2921
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- The MAX IV facility includes two storage rings operated at 1.5 GeV and 3 GeV, which are both designed to operate with a uniform, multibunch fill pattern. Both rings have a 100 MHz RF system and employ passive harmonic cavities to damp instabilities and increase Touschek lifetime. Recently, a discussion on timing modes at the MAX IV storage rings has been initiated by the user community. Creating opportunities for timing experiments implies operating the rings with other fill patterns than the planned multibunch mode. Such operation can, however, cause transient effects in the passive harmonic cavities which affect the performance of the machine. It is therefore of interest to study the effect on the beam when operating with non-uniform fill patterns. This paper presents bunch length measurements at the 100 MHz MAX II storage ring for fill patterns with gaps. The purpose of the measurements was to evaluate the employed measurement method and simulation codes for future studies of various alternate fill patterns in the MAX IV storage rings.
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| 3. |
- Olsson, Teresia, et al.
(författare)
-
Bunch Length Measurements with Passive Harmonic Cavities for Uniform Fill Patterns in a 100 MHz RF System
- 2016
-
Ingår i: Proceedings of IPAC2016, Busan, Korea. - 9783954501472 ; , s. 2914-2917
-
Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- The MAX IV facility includes two storage rings operated at 1.5 GeV and 3 GeV. Both rings make use of a 100 MHz RF system and are designed to operate with a uniform multibunch fill pattern aswell as employ passive harmonic cavities to damp instabilities and increase Touschek lifetime. Recently, a discussion on timing modes at the MAX IV storage rings has been initiated by the user community. This implies operating the rings with other fill patterns than the originally planned multibunch mode and therefore detailed studies of the performance of the harmonic cavities are of interest. This paper presents bunch length measurements at the 100 MHz MAX II storage ring for uniform fill patterns. The purpose of the measurements was to evaluate the employed measurement method and simulation codes for future studies of fill patterns in the MAX IV storage rings.
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