MRS TEST STAND EXTRUDER NEWS Victor Rykalin MRS

MRS, TEST STAND, EXTRUDER NEWS Victor Rykalin

MRS inside ! • 8 channels (+2 spare) has been delivered from CPTA Moscow Russia. • The needed documentation is in hands. • The tests are on the way (at FNAL). • After the new test stand set up at NICADD NIU the R&D with MRS will be continued. 3/10/2021 Victor Rykalin 2

MRS parameters 3/10/2021 Victor Rykalin 3

Status of the new test stand. • Two crates (NIM, CAMAC) and some of the necessary modules has been shipped to lab. 6 from PREP FNAL. • The vital modules (ADC and GRIB controller ) are not available at FNAL at this time. • FSU agreed to lend parts till the March of 2004. • The person responsible for the new test stand has to proceed with material move request and so on. • What kind of software we going to use ? 3/10/2021 Victor Rykalin 4

Current activity • Extruder is up with 2*1 die (November 4 first run for the ME department after long interruption). Will be continued on Thursday. A new motor for the loader has been installed and tested. A new polymer coating of the hopper. Problem still exist. • The PO for $1500 (Viscosity vs shear rate dependence measurements, first set) has been send. • The meeting between Gary Teafoe, Mike Roman and ME department has been organized ( to clarify the set of measurements on the 2*1 cm ** die ). • The comparative measurements of the BC 404, BC 408, FNAL extrusion( Ru 106 and cosmic bulk measurements ) work is in progress. For this purpose I am using the NICADD made test stand. • Working with Dmitry on photosensors. • New (old) PMT’s+dividers have been “spotted” at lab. 6 and tested. Two trigger counters have been assembled. There is a hope that patient (trigger) will be back to normal life. 3/10/2021 Victor Rykalin 5

The problems and their curing. • Nitrogen line • Delay with ALICE tests (due to the 2*1 die running) • a new hopper 3/10/2021 • Talk to Jerry Blazey. • To switch die as soon as possible and start with 10 holes die without pins. • The decision should be taken (FNAL or other vendor or NIU). Victor Rykalin 6

A plan for the next two weeks. To make happy ME DEP. with all parameters they need for the simulations. Proceed with preliminary MRS tests at FNAL. ? 1 NIM paper (proceed with some additional measurements of the scintillator bulk). ? Probable run for the ALICE. 3/10/2021 Victor Rykalin 7