From - Mon Oct 30 12:52:18 2000 Received: from bnl.gov (bnl.gov [130.199.128.163]) by sun2.bnl.gov (8.9.3/8.9.3) with ESMTP id MAA14365; Mon, 30 Oct 2000 12:29:02 -0500 (EST) Received: (from daemon@localhost) by bnl.gov (8.9.2/8.9.2) id MAA13988; Mon, 30 Oct 2000 12:29:01 -0500 (EST) Received: from toolbox1.bnl.gov (toolbox1.bnl.gov [130.199.3.10]) by bnl.gov (8.9.2/8.9.2) with ESMTP id MAA13873; Mon, 30 Oct 2000 12:28:24 -0500 (EST) Received: from localhost ([127.0.0.1] helo=toolbox1.bnl.gov) by toolbox1.bnl.gov with esmtp (Exim 3.16 #1 (Debian)) id 13qIi6-00023n-00; Mon, 30 Oct 2000 12:27:02 -0500 Received: from postoffice.princeton.edu ([128.112.129.120] helo=Princeton.EDU) by toolbox1.bnl.gov with esmtp (Exim 3.16 #1 (Debian)) id 13qIhw-00023d-00 for ; Mon, 30 Oct 2000 12:26:52 -0500 Received: from mailserver.Princeton.EDU (mailserver.Princeton.EDU [128.112.129.65]) by Princeton.EDU (8.9.3/8.9.3) with ESMTP id MAA04408 for ; Mon, 30 Oct 2000 12:28:11 -0500 (EST) Received: from mumu3 (mumu3.Princeton.EDU [128.112.84.233]) by mailserver.Princeton.EDU (8.9.3/8.9.3) with SMTP id MAA03339 for ; Mon, 30 Oct 2000 12:28:12 -0500 (EST) Message-ID: <035c01c04297$a8c21340$e9547080@Princeton.EDU> X-PH: V4.4@bnl.gov From: "Kirk T. McDonald \(609-258-6608\)" To: "Targetry Enthusiasts" Organization: Princeton University MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.50.4133.2400 X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4133.2400 Subject: [NuMu Targetry] Documents from Jacques Lettry Sender: numu-targetry-l-admin@lists.bnl.gov Errors-To: numu-targetry-l-admin@lists.bnl.gov X-BeenThere: numu-targetry-l@lists.bnl.gov X-Mailman-Version: 2.0beta5 Precedence: bulk List-Id: NuMu Targetry Date: Mon, 30 Oct 2000 12:34:30 -0500 Content-Type: text/plain; charset="iso-8859-1" X-Mozilla-Status: 8001 X-Mozilla-Status2: 00000000 X-UIDL: 31ff58d0e5435e1e1ef8ab37541ed43d The following items from Jacques Lettry have been posted on the targetry web page for the last 2 years: Experience with ISOLDE Molten Metal Targets at the CERN-PS Booster, by J. Lettry et al. (1995). http://www.hep.princeton.edu/~mcdonald/mumu/target/lettry/1.html Mockup of an ISOLDE target containing liquid lead. The dark tube on the diagonal from bottom left to top right contains the molten metal. The vertical bars at each end are the current leads to heat the tube. http://www.hep.princeton.edu/~mcdonald/mumu/target/june2298/Image07.jpg An ISOLDE target containing liquid lead. The upstream (left) end of the target buckled and cracked after a few beam pulses, and the lead was sprayed over the rest of the target cell. http://www.hep.princeton.edu/~mcdonald/mumu/target/june2298/Image03.jpg Another ISOLDE target containing liquid lead. A crack developed in the weld between the target tube and the upstream current lead; again the molten lead was ejected. http://www.hep.princeton.edu/~mcdonald/mumu/target/june2298/Image06.jpg Yet another ISOLDE target containing liquid lead. A crack developed in the weld between the target tube and the upstream current lead; again the molten lead was ejected. http://www.hep.princeton.edu/~mcdonald/mumu/target/june2298/Image04.jpg Upstream dome-shaped window of an ISOLDE target containing liquid lead. It is believed that trace amounts of tantalum in the lead reacted with the steel of the dome to produce a weaker alloy which was then cracked by the proton beam. http://www.hep.princeton.edu/~mcdonald/mumu/target/june2298/Image05.jpg See also: Exotic Ion-Beams, Targets and Sources http://xxx.lanl.gov/abs/physics/0009036 --Kirk _______________________________________________ NuMu-Targetry-l mailing list NuMu-Targetry-l@lists.bnl.gov http://lists.bnl.gov/mailman/listinfo/numu-targetry-l