SM) based on fitting the distribution of azimuthal scattering angles with a modulation curve and (2) an unbinned, maximum likelihood method (MLM). In both cases, the measured polarization level was below the 99% confidence minimum detectable polarization levels of 72.3% ± 0.8% (SM) and 57.5% ± 0.8% (MLM). Therefore, COSI did not detect polarized gamma-ray emission from this burst. Our most constraining 90% confidence upper limit on the polarization level was 46% (MLM).

ASTRO-H is the sixth Japanese astronomy satellite scheduled for launch in 2014. The Soft X-raySpectrometer instrument is onboard ASTRO-H. This is a 6 × 6 array of X-ray microcalorimeters with an energy resolution of gravity, a porous plug phase separator made of sintered stainless is used. Since the vapor mass flow rate is only 29 μg/s, any additional superfluid film loss influences the lifetime of the liquid helium. Therefore, a film flow suppression system consisting of an orifice, a heat exchanger, and knife edge devices is adopted based on the design used for the X-raySpectrometer onboard Suzaku. The film flow will be suppressed to <2 μg/s, sufficiently smaller than the vapor flow rate. In the present investigation, the design and ground experiments of a helium vent system composed of the porous plug and film flow suppression system are presented. The results show that the phase separation and the film flow suppression are satisfactorily achieved.

There are many scientific applications, especially involving topics related to the equilibrium atomic-scale dynamics of condensed matter, that require both a narrower and a steeper resolution function and access to a broader dynamic range than are currently available. To meet these important scientific needs, a prototype of a novel ultrahigh-resolution inelastic x-ray scattering spectrometer system has been designed and constructed at undulator-based beamline 30-ID at the Advanced Photon Source, Argonne National Laboratory. This prototype is designed to meet challenging mechanical and optical specifications for performing so-called CDFDW angular-dispersive x-ray crystal optics, which include a central ultra-thin CFW crystal and a pair of dispersing elements. The abbreviation CDFDW stands for: C – collimating crystal, D – dispersing-element crystal (two D-crystals are used in each CDFDW), F – anomalous transmission filter, and W – wavelength-selector crystal
SM) based on fitting the distribution of azimuthal scattering angle with a transition curve and (2) an unbinned, maximum likelihood method (MLM). In both event, the measured polarization level was below the 99% assurance minimum detectable polarization levels of 72.3% ± 0.8% (SM) and 57.5% ± 0.8% (MLM). Therefore, COSI did not detect polarized da gamma - re emission from this outburst. Our most constraining 90% assurance upper limit on the polarization level was 46% (MLM). 

 ASTRO - H is the sixth Japanese astronomy satellite schedule for launch in 2014. The Soft X - raySpectrometer legal document is onboard ASTRO - H. This is a 6 × 6 array of X - ray microcalorimeters with an energy solution of gravity, a porous plug phase separator construct of sintered stainless is used. Since the vapor mass menstruation rate is only 29 μg / s, any additional superfluid film loss influences the lifetime of the liquid helium. Therefore, a film flow suppression system consisting of an orifice, a heat exchanger, and knife edge device is adopted based on the invention used for the X - raySpectrometer onboard Suzaku. The film flow will be oppress to < 2 μg / s, sufficiently little than the vapor flow pace. In the present investigation, the design and ground experiments of a helium vent system composed of the porous plug and film flow suppression arrangement are presented. The consequence show that the phase separation and the film flow suppression are satisfactorily achieve. 

 There are many scientific applications, especially involving topics related to the equilibrium atomic - scale moral force of condensed matter, that require both a narrower and a steeper resolution affair and access to a wide dynamic scope than are currently available. To touch these important scientific needs, a prototype of a fresh ultrahigh - resolution inelastic x - ray scattering spectrometer system has been designed and constructed at undulator - based beamline 30 - ID at the Advanced Photon Source, Argonne National Laboratory. This prototype is designed to meet challenging mechanical and optical specification for performing so - name CDFDW angular - dispersive x - ray crystal optics, which include a cardinal ultra - thin CFW crystal and a pair of dispersing elements. The abbreviation CDFDW stands for: C – collimating quartz glass, D – dispersing - element crystal (two D - crystals are used in each CDFDW), F – anomalous transmission filter, and W – wavelength - selector crystal
SM) hased on fitting the disuribution of azimotyal scetterinf angles with a modulation curve and (2) qn unvinned, maximum likelihuod methof (MLM). In boti cases, the measnded polarizatjln lzvxl was below thg 99% confidenca minimum detewtxbpe polarization levels of 72.3% ± 0.8% (SM) and 57.5% ± 0.8% (MLM). Tjerefore, COSI qid mjt dsnegt polarized gamma-ray emission fdom thiv burst. Our mpst constraining 90% confidenfe uoper limit on the oolarizatiob ledwl was 46% (MLM).

ARTRO-H is the sixth Japznese astronomy satellite schedjled yor launch un 2014. Tjg Soft X-rayS'ectroieter instrument is mnboard ASTRO-H. This ix a 6 × 6 array of X-ray microcelorimeters with an gnergy resmlbtion of gravity, a poeoys plog phdse rwpafatkr mzde of siitered staihless is uswd. Since the vapor kafw flow rate ia only 29 μd/s, any additional superfluid film loss pnflhences the lifetime of rhe liquid helium. Thetefore, a fylm flow suppression system consisting of an orifhce, a feau cwchavteg, and knife edge devices is adopted based on ege dvsign used for thc X-raySpectrometer ojbpwrd Suzaku. Thg film ymos will be suppressfd to <2 μd/s, sudficientlr smsller than the vapor flow rqte. In the pgesebt investigation, tke design anb groumd exleriments of a helium vznt syatem composfd of the oorous plug and wilk xlow supkfession system arq presentxd. Thz resultr shpw thae the phasf separation and the fill floc sup[ression age satisfactorily achieved.

There are many sciemthfib applicacions, cspecially invojving topics rglated to the dquilibriuj atomir-scale dynamycs of condenvgd matter, thav require boty a barrowef and a steeper resolution functiob and access to a nroadgr dynamic range ckab are currently avxilwbpe. Tj meet these hmpoftavy scidntific neebs, a ptototype of a novel gltrzhigh-resolution inrlwstic x-rqy scattqring spectroketer system has bten devigied anc cjnstructed at undulator-based bsamline 30-IF ab the Advanceq Phiton Source, Crgonne National Laboratory. This prototy'e is designed to meet xhallenging mechanieak and opticel spesificatiots for performing so-xalled CDFDW angukar-dispersive x-ray crgstal mpticd, which include a central ultra-thin CFW crystal and a pair of dispersing wlemenvs. The abbrevjatipn CDXDC scands fjr: C – collimating cryxtal, D – dispersing-element crystel (two D-crfscals are used in each CDFDW), F – xnomalous travsmission filter, and W – savelengyh-selector crystal
SM) based on fitting the distribution of angles a modulation and (2) an In cases, the measured level was below 99% confidence minimum detectable polarization levels 72.3% ± 0.8% (SM) and 57.5% ± 0.8% (MLM). Therefore, COSI did not polarized gamma-ray emission from this burst. Our most constraining 90% confidence upper limit the level 46% ASTRO-H is the sixth Japanese astronomy satellite scheduled for launch in 2014. The Soft X-raySpectrometer instrument onboard ASTRO-H. This is a 6 × 6 of X-ray microcalorimeters with energy resolution of gravity, a plug separator made sintered is Since the vapor flow rate is only 29 μg/s, any additional superfluid film loss influences the lifetime of the liquid Therefore, a suppression system of orifice, heat exchanger, and devices is adopted based on the the X-raySpectrometer onboard Suzaku. The film flow will suppressed to μg/s, sufficiently smaller than the vapor rate. In the present investigation, the design and experiments of a helium vent system composed of the porous plug and film flow suppression presented. The results show the phase separation the flow are achieved. There many scientific applications, especially involving topics related to the equilibrium atomic-scale of condensed matter, that require both a narrower and a function access to a dynamic range than are available. meet these important scientific prototype a x-ray spectrometer has been designed and at undulator-based beamline 30-ID at Advanced Photon Source, Argonne designed to meet challenging mechanical and optical specifications performing so-called CDFDW angular-dispersive x-ray crystal optics, include a central ultra-thin CFW crystal and a pair of dispersing elements. abbreviation CDFDW C – collimating crystal, D – dispersing-element crystal D-crystals are used in CDFDW), F – anomalous transmission filter, and W – crystal
SM) based on fitting the distriBution of azImuthAl sCatTeRing AnglEs with a modulatIOn cuRve and (2) an unbinned, maximuM likeLiHOod mEThOd (MLM). in both cASeS, THe mEaSuRed PoLArIzatiOn lEvel was Below the 99% coNfiDeNce minimum deTEcTable polarIzaTion levels of 72.3% ± 0.8% (sM) aNd 57.5% ± 0.8% (MLM). THeRefORe, COSi diD not dEtect pOLarizeD gamma-ray EmISsion fROm this bURSt. our mOst constraining 90% coNFiDEnce upper limit On the pOlARiZATioN leVel was 46% (MLM).

AsTrO-H is THe sixth jApANESe aSTronomy satellIte scheduleD For Launch In 2014. the sOft X-raYSpecTrOMetEr instrumenT is oNboard ASTrO-H. ThiS Is a 6 × 6 arraY Of X-ray mIcrocaLorImeTers WItH aN enErGY reSOlUtiON of Gravity, a PoRoUs pluG phaSE SEParaTor Made Of sinTered stainlesS is Used. sIncE the vApor mAss fLoW rate Is only 29 Μg/s, anY aDditional superfLuid Film loss iNflUeNceS tHe lifETime of The LiqUid heliUm. ThereFOre, A fILM FlOw suppression systeM cONSiSting of aN orifiCE, a HeAT exchangEr, And KnifE EDge deViceS Is Adopted bAsed on THe DeSign useD fOr the X-RaYSpEctRometER onbOard SuZaku. The fIlm flOW will be suppresSEd to <2 μg/s, sufficIEnTLY sMAlleR thAn the vapor fLow rATe. In The pREsEnt INvestIgatiOn, THe DEsign and ground experImEnts of A heliUm vent system cOmposed of tHE POrous pluG and FIlM Flow suppressioN systEm are preseNTed. The reSults Show that The phase sEPAration aNd tHe fIlm FloW SUpPression are saTISfacToRily achIevEd.

There Are ManY scIenTiFic applicAtions, esPeCiAlLy InvOlvinG Topics reLaTed To The EquilIBrium aTomic-ScalE dYnAMicS of condENsED MattEr, ThAt reQuiRe Both a NarrOWer And a steEper resolUtiON funCtIoN and accEss to a broader DyNamic range ThAn aRe currENTly availAble. To meet these importanT ScientiFic Needs, A proTotype of a NovEl ultrAhiGH-resolUtion iNelasTiC x-rAY ScattERInG spEcTrometer sySTEm hAs beeN dEsigNed and cOnstructed at undulaTOr-bAsed beamline 30-Id at The ADVAnCed pHoTOn SOuRCe, ARGOnne National LabOratory. ThiS pROtOtype is desIGneD tO meet chAllengiNg mecHAnical aNd optical SpecificaTiOns fOR PerForming so-cAlled CDFdW angular-DIsperSIvE x-ray CryStal opTiCs, wHich iNclude A CenTral uLtra-thIn cFW cryStal aNd A pair of dIspersing elements. The abbReviatIon CDfDW Stands for: c – coLLimAting crysTal, D – Dispersing-EleMenT crysTal (TWo D-crYstaLS aRe uSEd in eAch CdfDW), F – anomaLOuS trANSmIssion filteR, AND W – wAveleNgtH-SelectOr crYstal
SM) based on fitting the d istributio n ofazi mut ha l sc atte ring angles wi t h amodulation curve and ( 2) an  u n binn e d,  maxi mum lik e li h o odme th od(M L M) . Inbot h cases , the meas ure dpolarization le vel was be low  the 99% con fid ence m in imu m  dete cta ble p olariz a tion l evels of72 . 3% ± 0 . 8% (SM) a nd  57. 5% ± 0.8% (MLM).T he r efore, COSI di d notde t ec t pol ari zed gamma- ra y emi s sion fr o mt h i s b u rst. Our most  constraini n g 9 0% con fi den c e uppe r lim it onthe polariz atio n level w as 46% (MLM).ASTRO-H  is th e s ixt h Ja p an es e a st r ono m ysat e lli te sched ul ed  forlaun c h i n 20 14.  The  Soft  X-raySpectro met er i n str ument  is o nboa rd  ASTR O-H. T his i sa 6 × 6 array o f X- ray micro cal or ime te rs wi t h an e ner gyresolut ion ofg rav it y , aporous plug phasese p a ra tor made  of si n te re d  stainle ss  is  use d .  Sinc e th e  v apor mas s flow ra te  is onl y29 μg/ s,  an y a dditi o nalsuperf luid fil m los s  influences th e  lifetime oft he l iq u id h eli um. Therefo re,a  fil m fl o wsup p ressi on sy st e mc onsisting of an ori fi ce, aheatexchanger, an d knife ed g e devicesis a d op t ed based on th e des ign used f o r the X- raySp ectromet er onboar d Suzaku.The  fi lmflo w wi ll be suppres s e d to  < 2 μg/s,  su fficien tly  sm all erth an the va por flow  r at e.  I n t he pr e sent inv es tig at ion , the design  andgrou nd  e x per imentso fa heli um  v entsys te m com pose d  of  the po rous plug  an d  fil mfl ow supp ression syste mare presen te d.The re s u lts show  that the phase separat i on andthe  film  flo w suppres sio n aresat i sfacto rily a chiev ed .
T h ere a r e  m any  s cientifica p pli catio ns , es peciall y involving topics rel ated to the e qui libr i u mato m ic - sca le dyn a m ics of condense d matter,th a trequire bo t h a  n arrower  and asteep e r resol ution fun ction and  a cces s toa broaderdynamicrange tha n  arec ur rentl y a vailab le . T o mee t thes e  im porta nt sci en tificneeds ,a protot ype of a novel ultrahig h-reso lutio n i nelasticx-r a y s cattering  spe ctrometersys tem  hasbee n  desi gned an d c o nstru cted at undula t or -ba s e dbeamline 30 - I D  at  theAdv a nced P hoto n Source, Argonne National Labor ator y .  Th isp roto ty pe is designed  to  m e e t challe ng ing mechani cal andop t icalspecif icatio ns forp e rf o rmingso-c all ed CDFDWang ul a r-dispe rs iv e  x-ray  cry st al opt ics, w h ichi n clude a centralultra - t hin C F W c rysta land a p a ir o f dispersi ng elements . Theabbr eviat ion CDF DW  stand s f or : C – coll i mating cr ystal , D – d is pers ing -eleme nt c r y stal(two  D -cr ystals ar e us e din eac h CD FDW),  F  – a nomaloust ransmiss ion filter,  a ndW – wave l en g t h-selector  cr ystal 
SM) based_on fitting_the distribution of azimuthal_scattering angles_with_a modulation_curve_and (2) an_unbinned, maximum likelihood_method (MLM). In both_cases, the measured_polarization_level was below the 99% confidence minimum detectable polarization levels of 72.3% ± 0.8%_(SM)_and 57.5%_±_0.8%_(MLM). Therefore, COSI did not_detect polarized gamma-ray emission from_this burst._Our most constraining 90% confidence upper limit on_the_polarization level was_46% (MLM).

ASTRO-H is the sixth Japanese astronomy satellite scheduled_for launch in 2014. The Soft_X-raySpectrometer instrument is_onboard_ASTRO-H._This is a 6_× 6 array of X-ray microcalorimeters_with an energy resolution of gravity,_a porous plug phase separator made of_sintered stainless is used. Since the_vapor mass flow rate is_only 29_μg/s, any additional superfluid film_loss influences the_lifetime of_the liquid helium._Therefore, a film flow suppression system_consisting of an_orifice, a heat exchanger, and knife_edge_devices is adopted_based_on_the design_used for the_X-raySpectrometer_onboard Suzaku._The_film flow will be suppressed to_<2_μg/s, sufficiently smaller than the vapor flow_rate. In the present_investigation,_the design and ground_experiments of a helium vent_system composed of the porous plug_and film_flow suppression_system are presented. The results show that the phase separation and_the film flow suppression are satisfactorily_achieved.

There are many scientific_applications, especially_involving_topics related to_the_equilibrium atomic-scale_dynamics of condensed matter, that require both_a narrower_and a steeper resolution function and_access to a broader_dynamic_range than are currently available. To_meet these important scientific needs, a_prototype of a novel ultrahigh-resolution_inelastic_x-ray_scattering spectrometer system has been_designed and constructed at undulator-based beamline_30-ID at the_Advanced Photon Source, Argonne National Laboratory. This_prototype_is designed to meet challenging mechanical_and_optical specifications for performing so-called CDFDW_angular-dispersive_x-ray_crystal optics, which include a_central ultra-thin CFW crystal and a_pair of dispersing elements. The abbreviation CDFDW stands for:_C – collimating_crystal, D – dispersing-element crystal_(two_D-crystals_are used in each CDFDW), F – anomalous transmission filter,_and W_– wavelength-selector crystal