skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Run 16, eIPM Summary

Abstract

Three problems with the eIPMs were corrected during the 2015 summer shutdown. These involved ac coupling and 'negative profiles', detector 'dead zone' created by biasing, and gain control on ramp. With respect to Run 16, problems dealt with included gain depletion on horizontal MCP and rf pickup on profile signals; it was found that the MCP was severely damaged over part of the aperture. Various corrective measures were applied. Some results of these measured obtained during Run 16 are shown. At the end of Run 16 there was a three-­day beam run to study polarized proton beams in the AGS. Attempts to minimize beam injection errors which increase emittance by using the eIPMs to measure the contribution of injection mismatch to the AGS output beam emittance are recounted. .

Authors:
 [1];  [1];  [1];  [1];  [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States). Alternating Gradient Synchrotron
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1324265
Report Number(s):
BNL-112516-2016-IR
R&D Project: KBCH139; KB0202011; TRN: US1700048
DOE Contract Number:
SC0012704
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; DIGITIZERS; SIGNALS; PULSE AMPLIFIERS; PROTON BEAMS; DESIGN; PULSES; BROOKHAVEN AGS; BEAM MONITORS; BEAM PROFILES; ERRORS; CORRECTIONS; GAIN; CONTROL; RF SYSTEMS; POLARIZED BEAMS; BEAM INJECTION; BEAM EMITTANCE; MICROCHANNEL ELECTRON MULTIPLIERS; Alternating Gradient Synchrotron

Citation Formats

Connolly, R., Dawson, C., Jao, S., Schoefer, V., and Tepikian, S. Run 16, eIPM Summary. United States: N. p., 2016. Web. doi:10.2172/1324265.
Connolly, R., Dawson, C., Jao, S., Schoefer, V., & Tepikian, S. Run 16, eIPM Summary. United States. doi:10.2172/1324265.
Connolly, R., Dawson, C., Jao, S., Schoefer, V., and Tepikian, S. Fri . "Run 16, eIPM Summary". United States. doi:10.2172/1324265. https://www.osti.gov/servlets/purl/1324265.
@article{osti_1324265,
title = {Run 16, eIPM Summary},
author = {Connolly, R. and Dawson, C. and Jao, S. and Schoefer, V. and Tepikian, S.},
abstractNote = {Three problems with the eIPMs were corrected during the 2015 summer shutdown. These involved ac coupling and 'negative profiles', detector 'dead zone' created by biasing, and gain control on ramp. With respect to Run 16, problems dealt with included gain depletion on horizontal MCP and rf pickup on profile signals; it was found that the MCP was severely damaged over part of the aperture. Various corrective measures were applied. Some results of these measured obtained during Run 16 are shown. At the end of Run 16 there was a three-­day beam run to study polarized proton beams in the AGS. Attempts to minimize beam injection errors which increase emittance by using the eIPMs to measure the contribution of injection mismatch to the AGS output beam emittance are recounted. .},
doi = {10.2172/1324265},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Aug 05 00:00:00 EDT 2016},
month = {Fri Aug 05 00:00:00 EDT 2016}
}

Technical Report:

Save / Share:
  • Purpose of S-16 was to determine whether fine material with a narrow size distribution would give yields equivalent to runs having fines with a much broader size distribution. The run gave very high oil yield, 99% of Fischer assay. High temperatures seem to be associated with small particles. Wide particle size distributions induce flow complexities resulting in oil burning and degradation. 27 figures, 16 tables. (DLC)
  • S>A detailed account of the Homogeneous Reactor Test Run 16, the first run with uranium in both the core and blanket regions, is presented. Other than mechanical failure of a sampler component and leak development in a fuel feed pump diaphram at the beginning of the run, only minor equipment difficulties were encountered. Evidence of fuel solution instability was obtained. Data obtained in the run showed a dependence of fuel composition and solute inventory on power level. Reactivity disturbances (power pips) were observed at higher powers. (C.J.G.)
  • The HRT chemical plant hydroclone loop, designed for the continuous removal of fission and corrosion product solids from the HRT, began radive operation during reactor run 15. Cell equipment was operated without difficulty and only minor troubles were encountered with auxiliary equipment. Operating variables, and data on corrosion product solids' removal during three periods of operation are summarized. Approximately 20% of the stainless steel corrosion products produced in the reactor were removed by the hydroclone. (auth)
  • Results are reported on retort run S-11 conducted to observe the effects of combustion retorting with undiluted air at relatively rapid burn (retorting) rates and to provide a base case for retorting small uniform shale (Anvil Points master batch -2.5 +- 1.3 cm) with undiluted air. It was found that a 0.6 m/sup 3//m/sup 2//minute superficial gas velocity gave an average rate of propagation of the combustion peak of about 2.7 m/day and an average maximum temperature on the centerline of the rubble bed of 1003/sup 0/C. Oil yield was 93 percent of Fischer assay. For small uniform shale particlesmore » (-2.5 + 1.3 cm) it is concluded that only small losses in yield (92 percent vs 96 percent in Run S-10) result from high retorting rates. Maximum temperature considerations preclude going to higher rates with undiluted air. Without diluent, a larger air flux would give excessive bed temperatures causing rock melting and potential closure to gas flow. In experimental retorts, another problem of excessive temperatures is potential damage to metal walls and in-situ sensors. No advantage is seen to using recycled off-gas as a combustion gas diluent. Inert diluents (e.g. nitrogen or steam) may be necessary for process control, but the fuel values in the off-gas should best be used for energy recovery rather than burned in the retort during recycle. Another consideration from model calculations is that the use of recycle gas containing fuel components retards the retorting rate and so is undesirable. No further recycle experiments are planned as the results of this run proved satisfactory.« less
  • A combustion run using sidewall heaters to control heat loss and computer control to set heater power were conducted to study the effectiveness of the heater control system, compare results with a one-dimensional retort model when radial heat loss is not significant, and determine effects of recycling off-gas to the retort (by comparison with future runs). It is concluded that adequate simulation of in-situ processing in laboratory retorts requires control of heat losses. (JRD)