Report on the stanford octagonal magnetic monopole detector
After 1008 active (1150 elapsed) days of operation, the 476 cm 2 three-axis monopole detector has been shut down without observing any candidate events. This sets an upper limit for a cosmic ray flux of magnetic monopoles of 4.4 × 10 -12 cm -2 s -1 sr -1 at 90% confidence level. We have constructed...
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| Veröffentlicht in: | IEEE transactions on magnetics 1987-03, Vol.23 (2), p.1134-1137 |
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| container_end_page | 1137 |
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| container_issue | 2 |
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| container_title | IEEE transactions on magnetics |
| container_volume | 23 |
| creator | Huber, M. Cabrera, B. Taber, M. Gardner, R. |
| description | After 1008 active (1150 elapsed) days of operation, the 476 cm 2 three-axis monopole detector has been shut down without observing any candidate events. This sets an upper limit for a cosmic ray flux of magnetic monopoles of 4.4 × 10 -12 cm -2 s -1 sr -1 at 90% confidence level. We have constructed a 1.5 m 2 (averaged over 4π solid angle) superconducting monopole detector and are testing its performance. The sensing area includes only coincident events. The detector is an octagonal cross-section cylinder with an independent planar gradiometer loop (16.9 × 521.2 cm) on each side of the octagon. Originally constructed with copper traces covered by lead/tin solder, the loops have been converted to 2 mm wide × 50 μm thick niobium-titanium (NbTi) ribbon because of excessive noise in early tests. We expect to obtain a signal to noise ratio of about 10 with the new loops. |
| doi_str_mv | 10.1109/TMAG.1987.1065000 |
| format | Article |
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This sets an upper limit for a cosmic ray flux of magnetic monopoles of 4.4 × 10 -12 cm -2 s -1 sr -1 at 90% confidence level. We have constructed a 1.5 m 2 (averaged over 4π solid angle) superconducting monopole detector and are testing its performance. The sensing area includes only coincident events. The detector is an octagonal cross-section cylinder with an independent planar gradiometer loop (16.9 × 521.2 cm) on each side of the octagon. Originally constructed with copper traces covered by lead/tin solder, the loops have been converted to 2 mm wide × 50 μm thick niobium-titanium (NbTi) ribbon because of excessive noise in early tests. We expect to obtain a signal to noise ratio of about 10 with the new loops.</description><identifier>ISSN: 0018-9464</identifier><identifier>EISSN: 1941-0069</identifier><identifier>DOI: 10.1109/TMAG.1987.1065000</identifier><identifier>CODEN: IEMGAQ</identifier><language>eng</language><publisher>IEEE</publisher><subject>Copper ; Detectors ; Event detection ; Lead ; Magnetic flux ; Niobium compounds ; Solids ; Superconducting magnets ; Testing ; Titanium compounds</subject><ispartof>IEEE transactions on magnetics, 1987-03, Vol.23 (2), p.1134-1137</ispartof><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c420t-a865bf5e9dd3db439a9b7ecee1960a7dbbede710ff97fb1670db3b62e0a173e33</citedby><cites>FETCH-LOGICAL-c420t-a865bf5e9dd3db439a9b7ecee1960a7dbbede710ff97fb1670db3b62e0a173e33</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/1065000$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,776,780,792,27901,27902,54733</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/1065000$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Huber, M.</creatorcontrib><creatorcontrib>Cabrera, B.</creatorcontrib><creatorcontrib>Taber, M.</creatorcontrib><creatorcontrib>Gardner, R.</creatorcontrib><title>Report on the stanford octagonal magnetic monopole detector</title><title>IEEE transactions on magnetics</title><addtitle>TMAG</addtitle><description>After 1008 active (1150 elapsed) days of operation, the 476 cm 2 three-axis monopole detector has been shut down without observing any candidate events. This sets an upper limit for a cosmic ray flux of magnetic monopoles of 4.4 × 10 -12 cm -2 s -1 sr -1 at 90% confidence level. We have constructed a 1.5 m 2 (averaged over 4π solid angle) superconducting monopole detector and are testing its performance. The sensing area includes only coincident events. The detector is an octagonal cross-section cylinder with an independent planar gradiometer loop (16.9 × 521.2 cm) on each side of the octagon. Originally constructed with copper traces covered by lead/tin solder, the loops have been converted to 2 mm wide × 50 μm thick niobium-titanium (NbTi) ribbon because of excessive noise in early tests. We expect to obtain a signal to noise ratio of about 10 with the new loops.</description><subject>Copper</subject><subject>Detectors</subject><subject>Event detection</subject><subject>Lead</subject><subject>Magnetic flux</subject><subject>Niobium compounds</subject><subject>Solids</subject><subject>Superconducting magnets</subject><subject>Testing</subject><subject>Titanium compounds</subject><issn>0018-9464</issn><issn>1941-0069</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1987</creationdate><recordtype>article</recordtype><recordid>eNqNkU1Lw0AQhhdRsFZ_gHjJyVvqTDbZDzyVolWoCFLPYZNMaiTJxt3twX9vSnrw2NMwzPPOwDyM3SIsEEE_bN-W6wVqJRcIIgOAMzZDnWIMIPQ5mwGginUq0kt25f332KYZwow9ftBgXYhsH4UvinwwfW1dFdkymJ3tTRt1ZtdTaMqos70dbEtRRYHKYN01u6hN6-nmWOfs8_lpu3qJN-_r19VyE5dpAiE2SmRFnZGuKl4VKddGF5JKItQCjKyKgiqSCHWtZV2gkFAVvBAJgUHJifM5u5_2Ds7-7MmHvGt8SW1rerJ7nyc6Exy4PAGERAh1wkYlNWKiTgAzhVydcHp8vcokjiBOYOms947qfHBNZ9xvjpAfVOYHlflBZX5UOWbupkxDRP_4afoHYpOaMQ</recordid><startdate>19870301</startdate><enddate>19870301</enddate><creator>Huber, M.</creator><creator>Cabrera, B.</creator><creator>Taber, M.</creator><creator>Gardner, R.</creator><general>IEEE</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope><scope>8BQ</scope><scope>JG9</scope><scope>7TB</scope><scope>FR3</scope></search><sort><creationdate>19870301</creationdate><title>Report on the stanford octagonal magnetic monopole detector</title><author>Huber, M. ; Cabrera, B. ; Taber, M. ; Gardner, R.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c420t-a865bf5e9dd3db439a9b7ecee1960a7dbbede710ff97fb1670db3b62e0a173e33</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1987</creationdate><topic>Copper</topic><topic>Detectors</topic><topic>Event detection</topic><topic>Lead</topic><topic>Magnetic flux</topic><topic>Niobium compounds</topic><topic>Solids</topic><topic>Superconducting magnets</topic><topic>Testing</topic><topic>Titanium compounds</topic><toplevel>online_resources</toplevel><creatorcontrib>Huber, M.</creatorcontrib><creatorcontrib>Cabrera, B.</creatorcontrib><creatorcontrib>Taber, M.</creatorcontrib><creatorcontrib>Gardner, R.</creatorcontrib><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>METADEX</collection><collection>Materials Research Database</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Engineering Research Database</collection><jtitle>IEEE transactions on magnetics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Huber, M.</au><au>Cabrera, B.</au><au>Taber, M.</au><au>Gardner, R.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Report on the stanford octagonal magnetic monopole detector</atitle><jtitle>IEEE transactions on magnetics</jtitle><stitle>TMAG</stitle><date>1987-03-01</date><risdate>1987</risdate><volume>23</volume><issue>2</issue><spage>1134</spage><epage>1137</epage><pages>1134-1137</pages><issn>0018-9464</issn><eissn>1941-0069</eissn><coden>IEMGAQ</coden><abstract>After 1008 active (1150 elapsed) days of operation, the 476 cm 2 three-axis monopole detector has been shut down without observing any candidate events. This sets an upper limit for a cosmic ray flux of magnetic monopoles of 4.4 × 10 -12 cm -2 s -1 sr -1 at 90% confidence level. We have constructed a 1.5 m 2 (averaged over 4π solid angle) superconducting monopole detector and are testing its performance. The sensing area includes only coincident events. The detector is an octagonal cross-section cylinder with an independent planar gradiometer loop (16.9 × 521.2 cm) on each side of the octagon. Originally constructed with copper traces covered by lead/tin solder, the loops have been converted to 2 mm wide × 50 μm thick niobium-titanium (NbTi) ribbon because of excessive noise in early tests. We expect to obtain a signal to noise ratio of about 10 with the new loops.</abstract><pub>IEEE</pub><doi>10.1109/TMAG.1987.1065000</doi><tpages>4</tpages></addata></record> |
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| identifier | ISSN: 0018-9464 |
| ispartof | IEEE transactions on magnetics, 1987-03, Vol.23 (2), p.1134-1137 |
| issn | 0018-9464 1941-0069 |
| language | eng |
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| source | IEEE Electronic Library (IEL) |
| subjects | Copper Detectors Event detection Lead Magnetic flux Niobium compounds Solids Superconducting magnets Testing Titanium compounds |
| title | Report on the stanford octagonal magnetic monopole detector |
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