TJ-II:Proposal template: Difference between revisions

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== Experimental campaign ==
== Experimental campaign ==
2017 Spring
Spring 2022


== Proposal title ==
== Proposal title ==
'''Impurity injection by laser blow-off: influence of main ions charge/mass on impurity confinement and transport'''
'''Enter Title here'''


== Name and affiliation of proponent ==
== Name and affiliation of proponent ==
B. López-Miranda 1, B. Zurro 1, M. Martínez 1, E. Hollmann 2, A. Baciero 1, M. Ochando 1, F. Medina 1, K.J. McCarthy 1 and TS and TJ-II Team.//                             
Enter name, affiliation and ORCID code here


1  Laboratorio Nacional de Fusión, CIEMAT, Madrid, Spain.
Suggested format:


2  University of California, San Diego, La Jolla, CA, USA.
[https://orcid.org/0000-0000-0000-0000 John Doe], University of Ivory Tower


== Details of contact person at LNF (if applicable) ==
== Details of contact person at LNF ==
B. López-Miranda:  belen.lopez@ciemat.es
If applicable, enter contact person here or write N/A


== Description of the activity, including motivation/objectives and experience of the proponent (typically one-two pages)==
== Description of the activity ==
Motivation. In previous experiments of impurity confinement in TJ-II plasmas we have investigated the behaviour of impurity confinement with the mass composition of the main ions and with charge/mass of the injected impurities [1]. Now we want to extend our study to He plasmas.


Proposal. Within the present proposal, we plan to inject light and heavy impurities into TJ-II ECRH plasmas by means of laser blow-off. We plan to study the behaviour of impurity confinement with the charge/mass of the main ions on the relaxation of emission of light and heavy impurities injected in TJ-II. For that purpose we want discharges in He and study the impurity confinement as a function of effective mass.
=== Motivation and Background ===
Basic information to understand the relevance of the proposed experiments in the bigger context of fusion plasma research. You can use references, e.g, <ref>A. Einstein, Journal of Exceptional Results (2017)</ref>.  


== If applicable, International or National funding project or entity ==
=== Proposal Objectives ===
This work was funded by the Spanish “MINECO” under Grant No. ENE2014-56517-R. B.L.M. would like to acknowledge her scholarship, Grant No. BES-2015-075704.
Specific objetives of this proposal within the context provided in Motivation and Background.
 
=== Approach and Methodology ===
Basic description of the experimental approach to meet the proposal objectives (e.g. parameter scans, configuration variation, operation schemes).
 
== International or National funding project or entity ==
Include funding here (grants, national plans)


== Description of required resources ==
== Description of required resources ==
Required resources:
Required resources:
* Number of plasma discharges or days of operation: We would need at least two operational days: one (compatible with other experiments) to adjust all the variables of the laser blow-off system and another day to perform the experiment. 
* Number of plasma discharges or days of operation:  
* Essential diagnostic systems: Main diagnostics will be radiation diagnostics (bolometers, X-rays, VUV spectrometer, etc.) and ECR radiometer data as well as other diagnostics with good time resolution.
* Essential diagnostic systems (without which, the proposal cannot be conducted):
* Type of plasmas (heating configuration): We need standard configuration plasmas (100_44_64).
* Other diagnostic system of special interest:
* Type of plasmas (heating and magnetic configuration):
* Specific requirements on wall conditioning if any:
* Specific requirements on wall conditioning if any:
1. We want discharges in He in order to study the impurity confinement as a function of effective mass.
* External users: need a local computer account for data access: yes/no
2. We need discharges with solely ECRH and good control with constant density along discharges. Lower densities appear to give more stable target plasmas; however, we wish plasma electron densities that are sufficiently high to ensure good Thomson scattering profiling of the target plasma.
* Any external equipment to be integrated? Provide description and integration needs:


* External users: need a local computer account for data access: N
== Preferred dates and degree of flexibility ==
* Any external equipment to be integrated? Provide description and integration needs: N
Preferred dates: (format dd-mm-yyyy)


== Preferred dates and degree of flexibility ==
(If remote participation is required or preferred, please, indicate it here. A Zoom connection with the local contact person will be arranged on the day of experiments.)
Preferred dates: (XX-03-2017)
 
We would like to perform the experiment during March 2017.
<!-- DO NOT REMOVE THE FOLLOWING LINES -->


== References ==
== References ==
<references />1. ZURRO B., HOLLMANN E., BACIERO A., OCHANDO M.A., MEDINA F., McCARTHY K.J. et al., “Transport studies using laser blow-off injection of low-Z trace impurities injected into the TJ-II stellarator”, Nuclear Fusion 51 (2011) 063015 (9pp).
<references />  


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[[Category:TJ-II internal documents]]
[[Category:TJ-II internal documents]]
[[Category:TJ-II experimental proposals]]
[[Category:TJ-II experimental proposals Spring 2022]]

Latest revision as of 16:07, 24 March 2022

Experimental campaign

Spring 2022

Proposal title

Enter Title here

Name and affiliation of proponent

Enter name, affiliation and ORCID code here

Suggested format:

John Doe, University of Ivory Tower

Details of contact person at LNF

If applicable, enter contact person here or write N/A

Description of the activity

Motivation and Background

Basic information to understand the relevance of the proposed experiments in the bigger context of fusion plasma research. You can use references, e.g, [1].

Proposal Objectives

Specific objetives of this proposal within the context provided in Motivation and Background.

Approach and Methodology

Basic description of the experimental approach to meet the proposal objectives (e.g. parameter scans, configuration variation, operation schemes).

International or National funding project or entity

Include funding here (grants, national plans)

Description of required resources

Required resources:

  • Number of plasma discharges or days of operation:
  • Essential diagnostic systems (without which, the proposal cannot be conducted):
  • Other diagnostic system of special interest:
  • Type of plasmas (heating and magnetic configuration):
  • Specific requirements on wall conditioning if any:
  • External users: need a local computer account for data access: yes/no
  • Any external equipment to be integrated? Provide description and integration needs:

Preferred dates and degree of flexibility

Preferred dates: (format dd-mm-yyyy)

(If remote participation is required or preferred, please, indicate it here. A Zoom connection with the local contact person will be arranged on the day of experiments.)


References

  1. ↑ A. Einstein, Journal of Exceptional Results (2017)

Back to list of experimental proposals

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