{"id":8871,"date":"2022-08-31T14:39:44","date_gmt":"2022-08-31T14:39:44","guid":{"rendered":"https:\/\/www.istp.cnr.it\/?post_type=product&#038;p=8871"},"modified":"2022-11-11T08:56:59","modified_gmt":"2022-11-11T08:56:59","slug":"investigation-of-rf-driver-equivalent-impedance-in-the-inductively-coupled-spider-ion-source","status":"publish","type":"product","link":"https:\/\/www.istp.cnr.it\/it\/research-product\/investigation-of-rf-driver-equivalent-impedance-in-the-inductively-coupled-spider-ion-source\/","title":{"rendered":"Investigation of RF driver equivalent impedance in the inductively coupled SPIDER ion source"},"content":{"rendered":"<p>SPIDER experiment includes an RF inductively coupled plasma source working at 0.3 Pa of gas pressure (H\/D) where plasma is generated and heated by eight RF drivers, fed by four RF circuits. A single RF circuit is composed of two drivers connected in series, attached to a capacitive matching network, fed by 200 kW 1 MHz RF oscillator through a coaxial transmission line. The knowledge of driver impedance in different experimental conditions is a valuable window for understanding the characteristics of generated plasma. Direct measurement of driver impedance in SPIDER is not possible, it has been estimated via the development of a suitable electrical model of the RF circuit using as input, measurements at the oscillator&#8217;s output. This paper reports on the progress in the modeling of the SPIDER RF circuit and discusses a procedure to estimate the driver impedance exploiting also the recently available experimental measurements from the dual directional coupler. The impedance obtained with this approach, derived from measurements obtained in a recent SPIDER campaign, is reported for various operating conditions, such as RF power, gas pressure, plasma grid current, cesium injection rate, type of gas (hydrogen and deuterium), etc.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Jain P.; Recchia M.; Maistrello A.; Gaio E.<\/p>\n","protected":false},"featured_media":1294,"comment_status":"closed","ping_status":"open","template":"","meta":[],"product_cat":[574],"product_tag":[968,3798,3799],"class_list":["post-8871","product","type-product","status-publish","has-post-thumbnail","hentry","product_cat-journal-articles","product_tag-rf-plasma","product_tag-inductively-coupled","product_tag-driver-equivalent-impedance","prodpage-style2"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.istp.cnr.it\/it\/wp-json\/wp\/v2\/product\/8871","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.istp.cnr.it\/it\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.istp.cnr.it\/it\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.istp.cnr.it\/it\/wp-json\/wp\/v2\/comments?post=8871"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.istp.cnr.it\/it\/wp-json\/wp\/v2\/media\/1294"}],"wp:attachment":[{"href":"https:\/\/www.istp.cnr.it\/it\/wp-json\/wp\/v2\/media?parent=8871"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.istp.cnr.it\/it\/wp-json\/wp\/v2\/product_cat?post=8871"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.istp.cnr.it\/it\/wp-json\/wp\/v2\/product_tag?post=8871"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}